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Journal articles on the topic 'Maize – Varieties'
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Sasmita, Inggit, Supriyono Supriyono, and Sri Nyoto. "PENGARUH BERBAGAI VARIETAS JAGUNG SECARA TUMPANGSARI ADDITIVE SERIES PADA PERTANAMAN KACANG TANAH TERHADAP PERTUMBUHAN DAN HASIL." Caraka Tani: Journal of Sustainable Agriculture 29, no. 1 (March 1, 2014): 45. http://dx.doi.org/10.20961/carakatani.v29i1.13312.
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<p>One way intentification food plant by intercropping systems. This study aims to determine effect differences in yield and find out what varieties maize growth and provide the best yield of intercropping maize varieties grown peanuts when planted in Additive Series. The study is based on Randomized Complete Block Design (RCBD), with one factor of maize varieties (V) with four replications. V01: Kancil monoculture peanut varieties, V02: monoculture Bisma corn varieties, V1-V6 : multiple varieties of maize cropping pattern Kancil peanut varieties (V1: Arjuna maize varieties, V2: Bisma corn varieties, V3: maize varieties Lamuru, V4 : maize varieties Srikandi Putih, V5: Sukmaraga corn varieties, and V6: maize varieties Gumarang). Analysis was performed by F test level 5 % and if the significant difference was followed by Duncan Multiple Range Test (DMRT) level 5%. The yield tend to be highest in groundnut V6 of 2.7 tons/ha and corn V4 of 5.03 tons/ha.</p>
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Y., Danso. "Host-suitability of maize varieties to Meloidogyne incognita." Pakistan Journal of Nematology 37, no. 2 (December 31, 2019): 249–50. http://dx.doi.org/10.18681/pjn.v37.i02.p249-250.
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Kambanje, Ardinesh, Amon Taruvinga, Abbyssinia Mushunje, Charles Mutengwa, and Saul Ngarava. "Determinants of Food Security Status amongst Smallholder Farmers Utilizing Different Maize Varieties in OR Tambo District, South Africa." Journal of Social Sciences Research, no. 62 (February 5, 2020): 133–39. http://dx.doi.org/10.32861/jssr.62.133.139.
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Maize is an important staple crop for poverty reduction and global food security in Sub Saharan Africa. Food insecurity can be combated through adoption of productivity improving technologies, which include improved maize varieties. In that endeavour, South Africa has promoted various improved maize varieties which include open pollinated varieties (OPVs), hybrids, and genetically modified (GM) varieties. Despite this, the traditional landrace varieties have also been dominating in the country. However, the household food insecurity problem in the Eastern Cape Province of South Africa may signify a mis-match between maize varieties being promoted amongst smallholder farmers’ and their needs. It therefore necessitates a scrutiny of the food security status among users of different maize varieties, and the determinants of such food security. A cross sectional survey was conducted in Port St Johns, Mqanduli and Flagstaff in the Eastern Cape Province, South Africa. Data was purposively collected from a sample of 650 smallholder farmers using a structured questionnaire. Descriptive statistics, Household Food Insecurity Access Score and ordinal logistic regression model were employed to characterize, examine the household food insecurity status and the determinants, respectively. Fifty-six percent of the respondents were utilizing land race maize varieties, whilst 29% GMs, 10% combining GMs and landrace, 4% improved OPVs and 1% convectional hybrids. The average land area under maize was 1.09 hectares with average yields (t/ha) of 1.9, 0.5, 1.7 and 1.6 for GM, landrace, conventional hybrids and improved OPVs respectively. Fifty-five percent of households utilizing GM varieties and 61% of those combining maize varieties were food secure. The regression model showed that maize variety had significant influence on food security. The study found that GM maize, improved OPV, white maize and combination effects of GM maize was associated with reduction of household food insecurity. From the study, it can be put into perspective that use of white and improved maize varieties reduces household food insecurity. Therefore, to address household food insecurity, the study recommended targeting white maize varieties, especially GM white maize varieties which are highly productive and a positive influence on household food security.
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Crossa, J., B. Westcott, and C. Gonzalez. "The Yield Stability of Maize Genotypes across International Environments: Full Season Tropical Maize." Experimental Agriculture 24, no. 2 (April 1988): 253–63. http://dx.doi.org/10.1017/s0014479700016008.
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SUMMARYEvaluation of the yield stability of a group of CIMMYT tropical maize populations across international environments, measured by the performance of varieties derived from them, showed that the populations Mezcla Tropical Blanca, La Posta and Amarillo Dentado produced the most stable varieties across environments. Mezcla Tropical Blanco and Amarillo Dentado produced selections with good stability in both low and high yielding environments while La Posta produced varieties with better performance in favourable environments. ‘Across-site’ varieties were not consistently more effective than ‘site-specific’ varieties in improving yield stability. Varieties selected for some specific population-environment combinations have been very stable in other areas of the world.
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Majeed, Saima, Mazhar Iqbal, Muhammad Rafique Asi, Shahzad Zafar Iqbal, and Jinap Selamat. "Analysis of Nutritional Traits and Aflatoxin Contamination in Selected Maize Varieties from Pakistan." Journal of Food Protection 80, no. 12 (November 1, 2017): 1993–98. http://dx.doi.org/10.4315/0362-028x.jfp-17-117.
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Recently, cultivation of high-yielding hybrid maize varieties has revolutionized maize production in Pakistan. Analyses of nutritional traits and aflatoxin (AF) contamination in these varieties can aid in the identification of susceptible and resistant varieties, particularly for cultivation in the Pakistani agro-climatic environment. Five spring maize varieties—Pioneer, Neelam, DK-919, Desi, and Hi-maize—were selected for analyses of their nutritional, tocopherol, and AF contents. Protein, carbohydrate, oil, ash, fiber, and moisture contents ranged between 8.7 and 10.8%, 68 and 71%, 3.72 and 5.56%, 1.09 and 1.81%, 1.1 and 3.1%, and 11.7 and 14.2%, respectively. Tocopherol levels in selected varieties were in the range of 461 to 1,430 μg/g. Hi-maize exhibited significantly higher protein and tocopherol contents than the other varieties, indicating its better suitability for feed and silage applications. The highest mean level of total AFs, 14.5 ± 0.12 μg/kg, was found in Desi, and results showed that the most dominant AF found in the maize varieties was AFB1. Furthermore, the results showed that the higher the level of tocopherol, the lower the concentration of total AFs and vice versa in maize varieties. The results can be used to investigate additional susceptible maize varieties that are resistant to fungal attack.
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Tiwari, Grace, Chandan K.C., Praseed Thapa, and Astha Shrestha. "Socio-economic analysis of open pollinated improved and hybrid maize production in Sindhupalchok district of Nepal." Journal of Agriculture and Natural Resources 4, no. 1 (January 1, 2021): 130–39. http://dx.doi.org/10.3126/janr.v4i1.33246.
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The study was conducted from April to June, 2020 for comparative analysis of socioeconomic factors and profitability between Open Pollinated Improved (OPI) varieties and Hybrid varieties on maize production in Sindhupalchok district of Nepal. A structured questionnaire was administered to 80 randomly selected households i.e. 48 HHs cultivated OPI and 32 HHs cultivated hybrid maize varieties. Descriptive statistics, unpaired t-test, multiple linear regressions and indexing were used for data analysis using statistical tools- SPSS version 25 and MS-Excel. Linear regression model revealed that area under maize (5% level), education (5% level), age of household head (1% level), training (1% level), access to credit (5% level) and choice of seed (1 % level) significantly influenced maize production. In addition, unpaired t-test revealed that the productivity of hybrid maize varieties was significantly higher (1% level) than OPI varieties. Fall Armyworm infestation was found to more severe in OPI varieties (5% level) than hybrid. Furthermore, B: C ratio of hybrid varieties (1.59) indicated hybrid maize to be more profitable than OPI (1% level). However, the total cost of cultivation along with the cost of seed per hectare of OPI was found to be lower than hybrid varieties (1% level) thereby significantly increasing the area under maize production for OPI varieties (1% level). Indexing identified- lack of availability of quality seeds and fertilizers (I= 0.78) as the major problem associated with maize production. Ensuring access to quality seeds and fertilizer at subsidy, mechanization and efficient extension services focused on development of affordable hybrid maize varieties or high yielding OPI and its adoption among the farmers in order to increase maize productivity is recommended.
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Rahma, Haliatur, Meity S. Sinaga, Memen Surahman, and Giyanto Giyanto. "TINGKAT KETERJADIAN PENYAKIT LAYU STEWART PADA BENIH DAN RESPON BEBERAPA VARIETAS JAGUNG TERHADAP INFEKSI Pantoea stewartii subsp. stewartii." Jurnal Hama dan Penyakit Tumbuhan Tropika 13, no. 1 (January 7, 2013): 1–9. http://dx.doi.org/10.23960/j.hptt.1131-9.
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Disease incidence of Stewart’s wilt on the seed and response of several maize varieties to Pantoea stewartii subp. stewartii. Stewart’s wilt disease of maize is caused by Pantoea stewartii subsp. stewartii. This bacterium is seed-borne pathogens, when attacked maize caused yield lost 40-100%. The objective of this research was to detemine the incidence level of stewart’s wilt disease, growth of some varieties of maize and their response to stewart’s wilt pathogens Pantoea stewartii subsp. stewartii. The research was conducted in the Laboratory of Bacteriology and Greenhouse Cikabayan IPB from November 2011 to March 2012. In experiment I, nineteen samples of maize were used for symptom test in the maize seedling stage, using Randomized Block Design with three replications. Experiment II used a Randomized Block Design with 2 factors: maize varieties (8 hybrids varieties, 3 open pollinated varieties, and 7 sweet corn varieties) and bacteria isolates (BGR 2, BGR 4, BGR 28, BGR7 and PSM 27), with three replications. The results showed in experiment I, the incidence of stewart’s wilt disease ranged 2.00 – 15.33%, germination and vigor index of maize seed were 68.00 – 95.33% and 55.33 – 90.67% respectively. While in experiment II, hybrid and open pollinated of maize varieties were resistant to moderately susceptible while all sweet corn varieties were susceptible to infection of Pantoea stewartii subsp. stewartii.
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Teixeira, Flavia França, José Heitor de Vasconcellos, Ramiro Vilela de Andrade, Manoel Xavier dos Santos, Carlos Eduardo Prado Leite, Paulo Evaristo de Oliveira Guimarães, Sidney Netto Parentoni, Walter Fernandes Meirelles, Cleso Antonio Patto Pacheco, and Gessi Ceccon. "BRS Cipotânea and BRS Diamantina: maize varieties." Crop Breeding and Applied Biotechnology 11, no. 2 (June 2011): 189–92. http://dx.doi.org/10.1590/s1984-70332011000200013.
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The maize cultivars BRS Cipotânea and BRS Diamantina were developed from accessions of the Maize Germplasm Bank of Embrapa Maize and Sorghum. The evaluation was participative, performed by scientists and end-users. The varieties were developed to provide farmers with maize varieties suitable for corn-husk crafts.
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Abera, Tolera, Tolessa Debele, and Dagne Wegary. "Effects of Varieties and Nitrogen Fertilizer on Yield and Yield Components of Maize on Farmers Field in Mid Altitude Areas of Western Ethiopia." International Journal of Agronomy 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/4253917.
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Yield of maize hybrids could be low when grown below optimum management practices. Use of improved varieties and optimum nitrogen fertilizer application practices are unlocking the high yielding potential of hybrids maize. With these in view, a field experiment was executed on farmers’ field to determine the effect of varieties and nitrogen fertilizer rate on yield and yield components of maize in two cropping seasons. It is laid out with randomized complete block design in factorial arrangement with three replications. Five maize varieties (BH-540, BH-543, BH-661, BH-660, and BH-140) as main factor and two levels of nitrogen (55 and 110 Kg N ha−1) as subfactor were used with one maize variety (BH-543) without fertilizer as control. Leaf area and leaf area index of maize varieties were significantly affected by application of nitrogen fertilizer rates. Interaction of maize varieties with nitrogen fertilizer rates significantly affected all yield and yield components of maize. Application of half and full recommended nitrogen fertilizer produced mean grain yield advantages of 31 and 41% over control. Therefore, application of half and full recommended nitrogen fertilizer for improved maize varieties has significantly improved grain yield and recommended for maize production in midaltitude area of western Ethiopia.
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Fenzi, Marianna, Devra I. Jarvis, Luis Manuel Arias Reyes, Luis Latournerie Moreno, and John Tuxill. "Longitudinal analysis of maize diversity in Yucatan, Mexico: influence of agro-ecological factors on landraces conservation and modern variety introduction." Plant Genetic Resources 15, no. 1 (September 2, 2015): 51–63. http://dx.doi.org/10.1017/s1479262115000374.
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Transformations that farmers bring to their traditional farming systems and their impacts on the conservation and evolution of maize varieties over a 12-year period are investigated using a longitudinal analysis. Despite the increased introduction and supply of improved maize variety seeds in the Yucatan Peninsula, Mexico, over the last 12 years farmers continue to maintain a substantial amount of traditional maize variety diversity. Even with the increased availability of hybrid seeds, farmers in the community of Yaxcaba on average plant more than three quarters of their milpa fields to traditional maize varieties, with the latter one fourth predominately planted to a locally improved varietyNal Xoy, a farm cross of a traditional variety and an improved variety. We observed a significant reduction in yellow –x-Nuuk nal, a long-cycle traditional landrace, paralleled by an increase in short- and intermediate-cycle locally adapted improved maize varieties. We found great differences in the distribution of maize varieties by soil type, with modern varieties being targeted for the rarer, deeper and fine-grained soils, while traditional varieties predominate on the more prevalent stony and thin soils. Our results provide a picture in which most traditional maize varieties in Yaxcaba continue to be maintained by farmers, coexisting with locally adapted improved varieties on the same landscape, and allowing the continued evolution of maize populations.
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Oyinbo, Oyakhilomen, Joseph James Mbavai, Mohammad Bello Shitu, Alpha Yaya Kamara, Tahirou Abdoulaye, and Omadachi Ogbodo Ugbabe. "Sustaining the beneficial effects of maize production in Nigeria: Does adoption of short season maize varieties matter?" Experimental Agriculture 55, no. 6 (January 18, 2019): 885–97. http://dx.doi.org/10.1017/s0014479718000467.
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AbstractIn order to ensure sustainability of maize production in short-season environments of Nigeria, the Sudan savanna taskforce of Kano–Katsina–Maradi (KKM) Pilot Learning Site promoted short-season maize varieties in 2008 via Innovation Platforms (IPs). In the light of the promoted varieties, we evaluated the adoption and net benefits (productivity and income) of the maize varieties. We used cross-sectional household data elicited from 600 sampled households, double-hurdle model and propensity score matching. There was a remarkable increase in the adoption of short-season maize varieties in 2014 compared to what was obtained in a baseline conducted in 2008. Our empirical findings revealed that the adoption of the short-season maize varieties promoted through the IPs had significant productivity and income increasing effects. This implies that policy interventions to ensure sustainable maize intensification in the face of environmental limitations, such as early and late season drought, should intensify the promotion of short-season varieties in Sudan savannas. This will require well-concerted agricultural extension that can leverage IPs in view of its potentials.
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Monteiro, Nelly M. F., Noel H. Akissoe, Laurent Adinsi, Paul Houssou, Polycarpe Kayode, Mohamed M. Soumanou, and Joseph D. Hounhouigan. "Processing Capability of Maize Varieties Through Free Sorting and CATA Methodologies and Physicochemical Characteristics." Journal of Food Research 6, no. 3 (May 10, 2017): 102. http://dx.doi.org/10.5539/jfr.v6n3p102.
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Maize varieties have specific food processing abilities, with reference to the production of gambari-lifin, lifin, mawe and ogi, four major intermediate products in Benin. Except for the gambari-lifin, these products are widely known in the most of African countries. The recent development of gambari-lifin in relation with the maize grains quality suggests the screening of appropriate maize cultivars for minimizing failure during processing. Panelists comprising 77 maize food processors sorted fifteen maize varieties of which fourteen improved and one local ecotype, and then described each group with their own words. Additionally, 70 maize food processors performed the CATA (Check All That Apply) questions test with a list of sensory terms on the maize varieties. Furthermore, selected physicochemical and rheological parameters were determined on seven representative maize varieties. Multidimensional scaling (MDS) and hierarchical cluster analysis and multiple factorial analyses (MFA) were performed on sensory descriptors and instrumental data. Based on MDS, four groups of maize varieties were identified being specifically appropriate for one or more of these intermediate products. Grains size and weight, endosperm texture and in a lesser extent colour were the major group descriptors of maize varieties. Vitreous character or average size were positively correlated to processing yield as far as gambari-lifin is concerned while floury character was associated to “ability for pasting”. This study confirms that food processors perception is very helpful and useful tools for maize breeders since it early provides consistent information for the end-uses products.
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Fandika, Isaac R., Grivin Chipula, and Geoffrey Mwepa. "Water Use Efficiency Differences in Maize Varieties under Every Furrow and Alternate Furrow Irrigation." Sustainable Agriculture Research 9, no. 2 (February 7, 2020): 17. http://dx.doi.org/10.5539/sar.v9n2p17.
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Water-use efficiency (WUE) differences of selected maize varieties under alternate and every furrow irrigation were investigated in a split-plot design trials with three replicates. Alternate furrow (AFI) and Every furrow irrigation (EFI) were main treatments and twenty maize varieties were sub-treatments. Plots were 64 m2 with one maize seed per station spaced at 0.25m apart. Crop water use results indicated that EFI consumed more water than the AFI. The AFI reduced crop water consumption by 38 - 45% compared to EFI. Differences were also prominent in maize varieties’ response to AFI. Late maturing maize varieties proved to have minor yield reduction with AFI compared to early and medium maturing maize varieties. WUE (kg m-3) differed with irrigation water application strategy (P<0.001). AFI had high WUE. A combination of AFI with selection of water efficient maize varieties was a good strategy for improving WUE. The AFI is a promising furrow irrigation water management strategy for water saving. According to farmers experience at five irrigation schemes and on station research, it was concluded that AFI is one of the climate smart irrigation technique that farmer can easily adopt and apply as it saves labour, time water whilst reducing conflict for water among irrigators. It was recommended that AFI be applied fully on early and medium maturing maize varieties within an irrigation interval of 7 days. For late maturing maize varieties, AFI technique should be applied from initial stage to mid - stage (up 55 days from planting) then apply EFI at tasselling and silking stages to reduce water stress at this critical stage.
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Islam, MN, MS Rahman, MS Alom, and M. Akhteruzzaman. "Performance of different crops productivity enhancement through adaptation of crop varieties at charland in Bangladesh." Bangladesh Journal of Agricultural Research 40, no. 4 (March 2, 2016): 629–40. http://dx.doi.org/10.3329/bjar.v40i4.26938.
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Charland that are emerged as islands within the river channel or as attached land to the riverbanks as a result of erosion and accretion. In crop production systems, screening of adaptable crop varieties for charland is necessary to address the climate change issues. Hence, five separate experiments were conducted at charland of the Padma River in Kushtia district during November 2012 to May 2013 to select suitable varieties of lentil, hybrid maize, soybean, potato and mustard for increasing crop productivity. The experiment comprised of four lentil varieties viz. BARI Masur-4, BARI Masur-5, BARI Masur-6 and a local cultivar; four hybrid maize varieties namely BARI Hybrid maize-5, BARI Hybrid maize-7, BARI Hybrid maize-9 and Pacific-11; three soybean varieties like BARI Soybean-5, BARI Soybean-6 and Shohag; four potato varieties viz., BARI Alu-7, BARI Alu-8, BARI Alu-31 and Belgium; and five mustard varieties viz., BARI Sarisha-11, BARI Sarisha-13, BARI Sarisha-14, BARI Sarisha-15 and BARI Sarisha-16 were evaluated separately in five trials for their adaptation in charland. Among the studied crops, lentil var. BARI Masur-6, maize var. BARI Hybrid maize-9, soybean var. BARI Soybean-6, potato var. BARI Alu-7 and mustard var. BARI Sarisha-11performed better in the charland under climate change situation in Bangladesh.Bangladesh J. Agril. Res. 40(4): 629-640, December 2015
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Basuki, Teger, Dwi Adi Sunarto, and Nurindah. "Analisis Kelayakan Usaha Tani dan Persepsi Petani terhadap Penggunaan Varietas Unggul Kapas." Buletin Tanaman Tembakau, Serat & Minyak Industri 1, no. 2 (October 10, 2016): 82. http://dx.doi.org/10.21082/bultas.v1n2.2009.82-91.
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<p>Balittas telah melepas tiga varietas baru kapas seri Kanesia yang mempunyai ketahanan moderat terhadap Amrasca biguttulla, yaitu Kanesia 11, Kanesia 12, dan Kanesia 13. Analisis ekonomi dan persepsi pengguna terhadap varietas-varietas kapas yang telah dilepas dapat memberikan informasi tentang kelayakan suatu varietas untuk dapat dikembangkan. Tujuan dari penelitian ini adalah untuk mendapatkan informasi tentang analisis ekonomi dan persepsi pengguna tentang varietas kapas Indonesia (Kanesia) yang mempunyai sifat ketahanan terhadap A. biguttulla. Penelitian ini dilaksanakan di daerah pengembangan kapas di Kecamatan Jati, Kabupaten Blora, Jawa Tengah dari Maret–Oktober 2008. Dalam penelitian ini digunakan varietas Kane-sia 10, 11, 12, 13, dan Kanesia 8 sebagai pembanding. Pada kegiatan ini digunakan metode demonstrasi plot dan wawancara. Demonstrasi plot merupakan petak percobaan yang ditanami varietas yang akan di-analisis kelayakannya. Kegiatan ini menggunakan lahan seluas 4 hektar yang dimiliki oleh 11 orang petani. Tata tanam mengikuti pola yang diterapkan petani di Blora dan teknologi budi daya lain diterapkan sesuai rekomendasi Balittas. Pada kegiatan ini analisis kelayakan usaha tani kapas varietas baru dilakukan dengan membandingkan hasil usaha tani secara parsial pada musim tanam jagung dan kapas, yaitu kegiatan pada akhir bulan April sampai dengan awal hingga akhir bulan Agustus. Analisis dilakukan dengan membanding-kan hasil usaha tani varietas-varietas baru pada lahan petani peserta kegiatan ini dengan usaha tani varietas yang sudah digunakan di wilayah tersebut (ISA 205A) di lahan petani IKR dan dengan hasil usaha tani ja-gung di lahan petani yang tidak menanam kapas tumpang sari dengan jagung. Produksi kapas berbiji dari varietas-varietas baru yang diuji pada lahan petani peserta tidak berbeda nyata, tetapi lebih tinggi diban-dingkan dengan produksi varietas pembanding Kanesia 8 sehingga dapat dikatakan bahwa varietas-varietas baru tersebut lebih unggul produktivitasnya dibandingkan Kanesia 8. Budi daya tumpang sari kapas varietas baru dengan jagung memberikan pendapatan yang lebih baik dibandingkan Kanesia 8. Akan tetapi, jika di-bandingkan dengan usaha tani jagung + kapas varietas ISA 205A atau dengan pendapatan usaha tani ja-gung monokultur, maka pendapatan usaha tani varietas-varietas baru ini jauh lebih rendah. Faktor yang ber-pengaruh terhadap perbedaan ini adalah waktu tanam, serta penggunaan input saprodi dan tenaga kerja. Di antara varietas-varietas unggul baru yang diintroduksikan, preferensi petani tertinggi adalah pada Kanesia 10, karena produktivitasnya lebih tinggi dibandingkan produksi varietas lainnya.</p><p> </p><p>Indonesian Tobacco and Fiber Crops Research Institute (IToFCRI) has released three cotton varieties which are moderate resistant to A. biguttulla, namely Kanesia 11, Kanesia 12, and Kanesia 13. Economic analysis and users’ perception to the new varieties would provide in important information of the variety’s feasibility for cotton development. The aim of this research activity was to obtain information about economic analysis and user’s perception of the newly released cotton varieties with moderately resistant to A. biguttulla. This research was conducted in cotton development area, in Jati, Blora, Central Java from March–October 2008. This research used cotton varieties, i.e. Kanesia 10, 11, 12, 13, and Kanesia 8 as a comparison. This re-search used demonstration plots and interview. Demonstration plots were plots where the evaluated varie-ties will be analyzed for their feasibility. This research activity used 4 hectares owned by 11 farmers. Planting system was as farmer’s practice, i.e., cotton intercropped with maize and cultivation technology recom-mended by IToFCRI. This analysis was done by comparing partially farming output of the new varieties planted by participant farmers with that of established varieties (ISA 205A) planted by non-participant farmers and with maize planted by non-participant farmers on April–August 2008. Cotton seed production of the new varieties was not significantly different, however, it was significantly higher than that of the compa-rison variety (Kanesia 8), so that those newly releases varieties are superior to the previously released va-riety. Intercropping maize with new cotton varieties gave a higher income than that with Kanesia 8. How-ever, it was much lower when comparing with the farming output of monoculture maize. Factors affected this different include planting time, the use of farming inputs including man power. Among the introduced cotton varieties, farmer’s preference was to Kanesia 10, because of its production performance.</p>
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Simunji, Simunji, Kalaluka L. Munyinda, Obed I. Lungu, Alice M. Mweetwa, and Elijah Phiri. "Optimizing Soil Moisture and Nitrogen Use Efficiency of Some Maize (Zea mays) Varieties under Conservation Farming System." Sustainable Agriculture Research 7, no. 4 (August 9, 2018): 42. http://dx.doi.org/10.5539/sar.v7n4p42.
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In Zambia, small holder farmers depend on producing maize (Zea mays), which is a major staple food for many Zambians. Maize productivity among the smallholder farmers is quite low, giving only 2.3 tons per hectare. The low yields are attributed to insufficient and erratic rain fall, low soil fertility, and poor farming practices. Therefore, the objective of this study was to evaluate the performance of maize genotypes for nitrogen use efficiency and soil moisture utilisation under conservation farming system. The trials were carried out at two sites with different soil types. Three maize varieties i.e. ZMS 606, GV 640 and GV 635 were evaluated in maize – cowpea rotation. Four cowpea varieties used for rotation with maize, i.e. Bubebe Lutembwe, BB 14-16-2-2 and LT 11-3-3-12. BB 14-16-2-2 and LT 11-3-3-12 are mutation-derived lines of Bubebe and Lutembwe cowpea parent varieties respectively. The experimental design used was split plot with three replications. The NUE was significantly (P< 0.05) higher in CF and accounted for 27 % and 15% more than conventional farming system which valued 17% and 3% at Chisamba and Batoka, respectively. while soil moisture content was higher at Batoka than Chisamba in CF system. ZMS 606 and GV 640 varieties were superior over GV 635 for NUE. Cowpea variety BB 14-16-2-2 significantly increased NUE of maize varieties. Therefore, smallholder farmers in Zambia can increase maize productivity in maize - cowpea rotation system due to the increased NUE. Recommendations are made for farmers to select improved nitrogen efficient maize varieties to optimize productivity of maize in conservation farming system.
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Lawal, Bosede Olukemi, Olukemi Titilola Ayoola, and Subuola Bosede Fasoyiro. "Evaluation of Agronomic and Sensory Attributes of Quality Protein Maize for Acceptability in South-Western Nigeria." Agricultura Tropica et Subtropica 47, no. 4 (December 1, 2014): 131–36. http://dx.doi.org/10.2478/ats-2014-0018.
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Abstract Quality Protein Maize (Zea mays L.) (QPM) varieties have been developed by scientists at the Institute of Agricultural Research and Training in Nigeria. For these varieties to have significant impact, they must possess traits acceptable to farmers. A study was carried out to evaluate the agronomic and sensory traits of two Quality Protein Maize - ART-98-SW-6-OB (QPM1) and ILE-1-OB (QPM2), in comparison with ART-96-SW-1 (High Protein Maize) and SUWAN-1-SR (a popularly grown improved variety) in three maize growing communities of South West, Nigeria. Sixty (60) farmers comprising males and females were evaluated for six sensory parameters. The parameters tested were appearance, colour, flavour, texture, taste and overall acceptability. The results of the agronomic evaluation showed that there were no significant differences in the height of QPM varieties and HPM at harvest. QPM varieties gave the highest grain yield of 2.38t/ha for ART-98-SW-6OB and 2.36t/ha for ILE-1-OB. Sensory evaluation showed that when the maize varieties were processed into corn-soy milk, QPM corn-soy milk had the highest sensory scores for all sensory parameters tested. Quality Protein Maize varieties had high grain yield and were most preferred for maize pudding and corn - soy milk. The QPM varieties, if formulated into foods for household or commercial purposes, should have good chance of being accepted by farmers with continuous promotional campaigns.
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Adebowale, T. J., and A. A. Osipitan. "Resistance of Some Hybrid Maize (Zea mays L.) to Damage by Maize Weevil Sitophilus zeamais (Motsch.) (Coleoptera: Curculionidae) and Larger Grain Borer, Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae)." Nigerian Journal of Entomology 35, no. 1 (November 12, 2019): 45–59. http://dx.doi.org/10.36108/nje/9102/53.01.50.
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Damage to stored maize grains by Sitophilus zeamais and Prostephanus truncatus is enormous and could be total if the insects are not controlled timely and appropriately. Control of the insects with host plant resistance has advantages over other control measures because of its lasting effect, friendliness to the environment and safety to natural enemies among others. This study assessed host resistance of 11 maize varieties to infestation and damage by S. zeamais and P. truncatus. One hundred gram maize grains each of the maize varieties were weighed into 250 cm3 glass jars and separately infested with twenty, 1-5 days old S. zeamais or P. truncatus. Percentage grain damage, weight loss, adult mortality, grain dust and number of insects were determined and integrated to define the resistance of the maize varieties to the insects. Eight of the 11 maize varieties were either resistant or moderately resistant to damage by S. zeamais and P. truncatus, while three were susceptible. The basis of resistance is antibiosis conferred by the ash, carbohydrate and fat content of the maize grains. The resistance varieties could be planted to mitigate infestation and damage by the insects. The factors conferring resistance can be used as environmentally friendly source of resistance to breed maize grains for resistance to the insects.
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KEHINDE, Ayodeji Damilola. "DOES CREDIT ACCESS IMPROVE ADOPTION INTENSITY OF IMPROVED MAIZE SEED VARIETIES?" Cercetari Agronomice in Moldova 53, no. 4 (2021): 434–44. http://dx.doi.org/10.46909/cerce-2020-037.
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This study investigated the effect of credit access on the adoption intensity of improved maize varieties in Osun State. A number of 150 maize farmers were selected through a multistage sampling procedure from using a structured questionnaire. Descriptive statistics, adoption index, and Tobit regression model were used to analyse the data collected. The results showed that Majority of maize farmers were over 40 years (52.6%), male (87%), and married (87%). The result also showed that majority of the farmers did not adopt improved maize varieties (55%) in the state. Swan 1 improved variety was majorly adopted (87.1%), while DMR-ESR-W variety was less adopted (62.9%) in the State. Just a few of maize farmers had access to credit in the State (20%). The mean adoption intensity in the State was observed to 62%. Based on adoption intensity of improved maize varieties, adopters were classified as partial adopters (65%) and full adopters (35%). Tobit regression estimates showed that credit access, household size, secondary occupation, years of education and extension contact have significant effect on the adoption intensity of improved maize varieties. In accordance with the findings, we therefore recommend that microfinance institutions should look attentively at scaling up their credit services to enhancing adoption intensity of improved maize varieties.
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Bashyal, Shila, Padam Bahadur Poudel, Jenny Budha Magar, Laxmi Dhakal, Suraj Chad, Binita Khadka, and Sidda Lal Bohara. "Effect of Nutrient Management on Two Varieties (Hybrid and Local) of Maize in Western Inner Terai of Nepal." International Journal of Applied Sciences and Biotechnology 8, no. 2 (June 25, 2020): 191–98. http://dx.doi.org/10.3126/ijasbt.v8i2.29586.
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In Nepal, the productivity of maize is very low in comparison with developed countries. The use of hybrid varieties with proper nutrient management helps to unlock the high yielding potential of maize. So, the experiment was conducted at Fulbari, Dang, Nepal from June 30, 2019 to October 16, 2019 to find the yield performance of two maize varieties (Local and Hybrid) under different nutrient management. The study was conducted in factorial randomized complete block design with three replications and eight treatments. Treatments consist of different combinations of two maize varieties (Local and hybrid) and four different nutrient management practices. Significant effects of Nutrient management were observed on plant height, l
eaf area index (LAI), kernels per row, kernels per cob maize, test weight, biological yield, economic yield and harvest index of maize. Similarly, significant effects of varieties was observed on plant height, leaf number, LAI, cob length, kernel rows per cob, kernels per kernel row, kernels per cob maize, test weight, biological yield, economic yield and harvest index of maize. Interaction effect of Nutrient management and varieties was found significant on LAI, kernel rows per cob, kernels per kernel row, kernels per cob maize, test weight, biological yield, economic yield and harvest index of maize. The overall performance of hybrid maize under Leaf color chart (LCC) based nutrient management was found better than other treatments. Therefore, production of Hybrid maize under LCC based nutrient management is suggested.
Int. J. Appl. Sci. Biotechnol. Vol 8(2): 191-198
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Subedi, Sanjiv, Yuga Nath Ghimire, and Deepa Devkota. "Socio-economic assessment on maize production and adoption of open pollinated improved varieties in Dang, Nepal." Journal of Maize Research and Development 3, no. 1 (January 5, 2018): 17–27. http://dx.doi.org/10.3126/jmrd.v3i1.18916.
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Research was conducted from February to May, 2017 for socioeconomic assessment on maize production and adoption of open pollinated improved maize varieties in Dang district of Nepal. Altogether, 100 samples were taken by simple random sampling from the major maize growing areas and relevant publications were reviewed. Focal Group Discussion and Key Informant Survey were also done. Descriptive statistics, unpaired t-test, probit regression and indexing were used for data analysis using statistical tools- SPSS, STATA and MS-Excel. Probit econometric model revealed that ethnicity (1% level), gender (5% level), area under open pollinated improved maize (1% level), seed source dummy (1 % level) and number of visits by farmers to agrovet (5% level) significantly determined the adoption of open pollinated improved maize varieties. In addition, unpaired t-test revealed that the productivity of open pollinated improved maize varieties was significantly higher (at 1% level) than local; also, the multinational companies' hybrids showed significantly higher productivity (at 1% level) when compared to open pollinated improved varieties. Furthermore, indexing identified- lack of availability of quality seeds and fertilizers (I= 0.86) as the major problem associated with the maize production. Giving aggressive subsidy on open pollinated improved seeds and dealership to registered agrovets for selling the subsidy seeds could enhance the adoption. Moreover, government organizations working in the areas of agricultural extension and research must focus on adoption of open pollinated improved maize varieties among the farmers, substituting the local and developing the high yielding hybrid varieties in Nepal to increase the maize productivity.
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Zhang, Huili, Chuang Yuan, Guillian Mao, Xue Gao, Liu Zhu, and Xing Xu. "Evaluation of saline-alkali and drought tolerance in maize varieties." Bangladesh Journal of Botany 48, no. 4 (December 31, 2019): 1047–63. http://dx.doi.org/10.3329/bjb.v48i4.49053.
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Saline-alkali and drought stresses are one of the abiotic stress factors that limit the normal growth and development of plants. In this work, various agronomic indexes including growth physiology and yield attributes were studied under saline-alkali and drought stress treatments. It was found that the limit of plant growth and development caused by drought stress is much higher than that of saline-alkali stress (p < 0.01). Based on the comprehensive evaluation value (D value), under saline-alkali stress condition, 36 maize varieties could be divided into four groups by cluster analysis (CA): High saline-alkali tolerance (3 varieties), medium saline-alkali tolerant(10 varieties), saline-alkali sensitive (19 varieties), high saline-alkali sensitive (4 varieties). In drought stress condition, 36 maize varieties could be divided into five groups by cluster analysis (CA): High drought-tolerance (2 varieties), medium drought-tolerant (14 varieties), low drought-tolerant (15 varieties), drought-sensitive (4 varieties), high drought-sensitive (1 variety). Therefore, this study provides a comprehensive screening of maize varieties under saline-alkali and drought stresses.
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Ketema, Mengistu, Kibebew Kibret, Feyisa Hundessa, and Tewodros Bezu. "Adoption of Improved Maize Varieties as a Sustainable Agricultural Intensification in Eastern Ethiopia: Implications for Food and Nutrition Security." Turkish Journal of Agriculture - Food Science and Technology 9, no. 6 (July 2, 2021): 998–1007. http://dx.doi.org/10.24925/turjaf.v9i6.998-1007.3937.
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This paper examines factors determining farmers’ adoption decision for improved maize varieties in the maize-common bean intercropping practices in two districts of East Hararghe zone, Eastern Ethiopia. It is based on data collected from 129 farm households using structured questionnaire. Descriptive results revealed that adopters of improved maize varieties had better food and nutrition security status. Furthermore, logit model output indicated that the decision to adopt improved maize varieties is influenced by location (district) dummy, education status of the household head, age of the household head, distance from the main road, and the number of plots owned. Major recommendations include improving the rural road infrastructure, educating and training farmers, organizing experience sharing events among farmers, and raising awareness about the food and nutrition security benefits of sustainable agricultural intensification practices like intercropping improved maize with improved common bean varieties.
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Olawuyi, Odunayo Joseph, Aishat Omotayo Azeez, and Abeeb Abiodun Azeez. "Improvement of Provitamin A in Maize Varieties Using Arbuscular Mycorrhizal Fungus, Glomus clarum." Bio-Research 19, no. 1 (June 30, 2021): 1227–36. http://dx.doi.org/10.4314/br.v19i1.6.
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Arbuscular mycorrhizal fungus (AMF, Glomus clarum) has been used widely as a bio-amendment and bio-control agent in several biotechnological studies. In this study, biofortification of maize with provitamin A using AMF was investigated. Five maize varieties (V1 = white drought-resistant maize, V2= yellow provitamin A maize, V3= white drought-tolerant maize, V4= yellow striga-resistant maize and V5= white striga-resistant maize) were evaluated in a screen house experiment laid out in a completely randomized design with three treatments: T1 = maize + AMF before planting, T2 = maize + AMF, inoculated two weeks after planting and T3 (control) = maize only, and four replications. The result showed that AMF significantly (p<0.05, p = 0.0029) increased the provitamin A level of the maize varieties. White drought-tolerant maize (V3) had the highest provitamin A content (581.57 µg) after harvest, while the least (288.33 µg) was found in white drought-resistant maize (V1). Also, the effect of the treatments on the growth traits (plant height, leaf length, number of leaves per plant) of the maize varieties was highly significant. Therefore, AMF could be considered in breeding maize with high provitamin A content and improved morphological characters.
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Koirala, Saurabha, Akash Dhakal, Dhiraj Niraula, Sampurna Bartaula, Urbashi Panthi, and Mohan Mahato. "Effects of row spacings and varieties on grain yield and economics of maize." Journal of Agriculture and Natural Resources 3, no. 1 (January 8, 2020): 209–18. http://dx.doi.org/10.3126/janr.v3i1.27174.
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Maize is the second most important crop of Nepal. The yield of the crop is low due to lack of appropriate plant density for the varieties. The field experiment was carried out to study the effect of different row spacings on different maize varieties at Deupur, Lamahi municipality of the dang district in province No. 5, Nepal during the rainy season from June to September, 2018. Four levels of spacings (boardcasting and three row spacings of 45, 60 and 75 cm) and two maize varieties (Rampur Composite and Arun-2) were evaluated using randomized complete block design with three replications. The highest grain yield was found in Rampur Composite and Arun-2 while they were planted with row spacing of 60 cm with plant to plant spacing of 25 cm. The highest grain yield, cob length, cob circumference, number of rows per cob, thousand grain weight were reported when maize was planted in the row spacing 60×25cm. Among the maize varieties, Rampur Composite produced the highest grain yield, cob length, cob circumference, number of rows per cob as compared to Arun-2. This study suggested that maize production can be maximized by cultivating maize varieties with row spacing of 60 cm with plant to plant spacing of 25 cm.
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Ribeiro, Priscilla F., Baffour Badu-Apraku, Vernon E. Gracen, Eric Y. Danquah, Manfred B. Ewool, Charles Afriyie-Debrah, and Benedicta N. Frimpong. "Farmers Perception of Low Soil Fertility and Hybrid Maize and the Implications in Plant Breeding." Sustainable Agriculture Research 6, no. 2 (January 25, 2017): 1. http://dx.doi.org/10.5539/sar.v6n2p1.
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In spite of efforts by national and international scientists to improve crop productivity, varieties of crops grown in Africa have low productivity. Varieties improved for yield have had low adoption rates among small scale farmers. Productivity of maize remains low in the smallholder sector because the crop continues to be grown under stress-prone environments and with limited resources. Participatory Rural Appraisal (PRA) tools, including two focus group discussions and interviews with 120 individual farmers were conducted in Wenchi and Ejura-Sekyedumase districts in Ghana to determine maize production constraints, assess farmers’ perceptions of low soil fertility in maize production and their coping strategies for the control of low soil fertility. Opportunities for breeding new maize varieties with tolerance to low soil fertility and improving farmers' perception on adoption and utilisation of maize hybrids were also examined. Results from interviews revealed that low soil fertility, drought, diseases and insect pests are the dominant constraints in maize productivity in the two districts. Farmers in the study area also have preference for low soil nitrogen (low N) tolerant, drought tolerant, disease and pest resistant varieties that require lower inputs. They prefer maize varieties which produce slender cobs that are light in weight with lots of grain. The farmers lack knowledge about hybrids but are willing to adopt maize hybrids that are tolerant to low N.
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Oluwaranti, Abimbola, and Oluwatosin Temilade Ajani. "Evaluation of Drought Tolerant Maize Varieties under Drought and Rain-Fed Conditions: A Rainforest Location." Journal of Agricultural Science 8, no. 7 (June 8, 2016): 153. http://dx.doi.org/10.5539/jas.v8n7p153.
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<p>Newly developed drought tolerant maize (<em>Zea mays</em> L.) varieties have been hypothesized to be of different genetic make-ups, hence this study was conducted to evaluate drought-tolerant maize varieties under drought and rain-fed conditions, identify the highest yielding varieties and determine the relationship between agronomic traits and varieties’ yield under these conditions in a rainforest location. Nine drought tolerant varieties of maize and a local check were evaluated during the early part of the early cropping season (March) (Drought) as well as the actual early cropping season (May-June) (Rain-fed) of 2015 at the Teaching and Research Farm (T&RF) of Obafemi Awolowo University, Ile-Ife (7°28'N, 4°33'E and 244 m above sea level). There were significant differences among the two environments for all the traits measured. The performance of the drought tolerant maize varieties is better under the rain-fed condition. The yield performance of all varieties are not significantly different from each other (1.36 tons/ha to 2.75 tons/ha) under drought except EVDT-W 2000 STR C<sub>0</sub> (1.10 tons/ha). All the varieties evaluated under rain-fed condition produce higher grain yield (2-44 tons/ha-3.69 tons/ha) which are not significantly different each other. All the yield components except ear height and length had a strong positive relationship with grain yield under drought while only ear number and weight had relationship with yield under rain-fed condition. In conclusion, among the drought tolerant maize varieties, EVDT-W 2000 STR C<sub>0</sub> need further improvements to drought. Furthermore, ear weight can be used to select parents for the development of drought tolerant maize varieties in this agro-ecology.</p>
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Chukwudi, Uchechukwu Paschal, Funso Raphael Kutu, and Sydney Mavengahama. "Heat Stress Effect on the Grain Yield of Three Drought-Tolerant Maize Varieties under Varying Growth Conditions." Plants 10, no. 8 (July 27, 2021): 1532. http://dx.doi.org/10.3390/plants10081532.
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A rise in global temperature will reduce maize yield, particularly in Africa, where maize is a staple food. Therefore, improving maize yield under heat stress will promote food security in the region. The objective of this study was to assess the influence of heat stress on the grain yield of drought-tolerant maize varieties under varied growth conditions. The experimental design used was a 2 × 3 × 3 × 2 factorial fitted into a completely randomized design with four replications. The factors were heat stress, maize variety, soil amendment, and soil type. The results showed a better yield from sandy clay loam over loamy sand soil. Varieties WE5323 and ZM1523 amended with poultry manure gave the best yield under the non-heat and heat-stressed environments, respectively. Heat stress reduced the cob weight, grain weight, grain number, and stover dry weight by 64, 73, 69, and 23%, respectively. Grain number, grain weight, and cob weight were the most informative yield attributes in this study and should be considered in a maize selection program. The ranking for the maize varieties was WE5323 > ZM1523 > WE3128. Drought-tolerant maize varieties can be useful in heat stress mitigation. This information is useful for the simulation of maize yields for heat stress-prone areas in Sub-Saharan Africa.
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FISHER, MONICA, and SIEGLINDE SNAPP. "SMALLHOLDER FARMERS’ PERCEPTIONS OF DROUGHT RISK AND ADOPTION OF MODERN MAIZE IN SOUTHERN MALAWI." Experimental Agriculture 50, no. 4 (March 3, 2014): 533–48. http://dx.doi.org/10.1017/s0014479714000027.
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SUMMARYModern maize varieties have been bred for drought tolerance and early maturity, to assist farmers in avoiding or escaping the effects of moisture stress in drought-prone areas. This study evaluates the prospects for widespread adoption of these modern maize varieties as a climate change adaptation strategy for smallholder farmers. Data are from a detailed household survey completed in four rural villages in Southern Malawi between May and July 2010. The empirical analysis involves estimation of an ordered logit regression model because the dependent variable is categorical, with one category for nonadoption (has never grown modern maize varieties) and three categories for the duration of growing a modern maize variety among adopters (this year only, 2 to 5 years and 6 years or more). The empirical findings indicate a positive association between a farmer's perception of drought risk and the adoption and continued use of modern maize. Regression results also show that farmers that value the traits of early maturity and drought tolerance are more likely to adopt modern maize varieties. There is evidence of some disadoption among farmers dissatisfied with maize genotype performance, in terms of poor storability and yield under drought conditions. Finally, the study highlights the urgent need for maize breeders interested in sustained use of modern varieties to simultaneously address robust drought tolerance, early maturity and storability. This underscores the importance of cognizance of local farmer preferences in crop breeding efforts.
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Ngom, Déthié, Marie-Laure Fauconnier, Paul Malumba, Cheikh Thiaw, Thierry Brévault, and Mbacké Sembène. "Morphophysical and biochemical traits involved in maize grain varietal susceptibility to the maize weevil, Sitophilus zeamais (Coleoptera, Curculionidae)." BASE, no. 1 (2021): 45–56. http://dx.doi.org/10.25518/1780-4507.18876.
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Description of the subject. Maize (Zea mays L.) is a major staple food providing nutrients for humans and animals worldwide. In Sub-Saharan Africa, maize is stored to ensure food resource availability throughout the year. However, stored-product pests such as the maize weevil, Sitophilus zeamais (Motsch.) (Coleoptera; Curculionidae) can cause huge grain losses. Objectives. This study aimed to assess the oviposition preference of Sitophilus zeamais over maize varieties commonly cultivated in Senegal and the effect of grain morphophysical and biochemical characteristics on their susceptibility to the maize weevil. Method. Twenty-five S. zeamais pairs (M/F) were placed in the center of an arena at equal distance of small heaps of maize grains (30 g) from nine maize varieties. Adult abundance, damaged grains, grain weight loss, and progeny were confronted to grain characteristics (phenolics and ferulic acid content, hardness, brightness, color and size of grains). Results. Susceptibility to the maize weevil varied significantly among maize varieties. Synth-9243 was the most susceptible variety with greatest damaged grains (10.5 ± 2.3%), grain weight loss (2.3 ± 0.6%), and progeny (17.3 ± 3.8 adults). The least susceptible varieties were Across-Pool, SWAN, Obatampa, and Tzee-Yellow. Grain characteristics such as phenolics and ferulic acid content were negatively related to susceptibility, but other constituents may have antixenosis or antibiosis effects. In addition, grain brightness may also have a visual effect deterring oviposition. Conclusions. The most repellent and less favorable varieties for S. zeamais were Tzee-Yellow, Across-Pool, Obatampa and SWAN, that presented high content of phenolics and ferulic acid, hardness and brightness of grains.
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Jagła, Małgorzata, Łukasz Sobiech, Piotr Szulc, Kamila Nowosad, Jan Bocianowski, and Monika Grzanka. "Sensitivity Assessment of Varieties, Effectiveness of Weed Control by Selected Herbicides, and Infection of the Fusarium in Maize (Zea mays L.) Cultivation." Agronomy 10, no. 8 (August 1, 2020): 1115. http://dx.doi.org/10.3390/agronomy10081115.
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The amount of maize yield depends on many factors. Among them, plant health plays a significant role. Herbicide selectivity (of mesotrione, 2,4-D, and bromoxynil) for different maize varieties was assessed in greenhouse experiments. The effectiveness of herbicides (MCPA, 2,4-D + dicamba) and spraying mixture of the herbicide MCPA with mepiquat chloride was tested on Chenopodium album L. and self-seeding winter oilseed rape (Brassica napus L.). The genetic distance between selected maize varieties and species composition of pathogens of the genus Fusarium isolated from the seeds of the discussed crop were examined. Research results indicated that individual herbicides differed in the selectivity in relation to maize, which depended on the crop variety. The selected herbicides showed high efficacy against the plants used in the experiment. The addition of mepiquat chloride to the composition of the spraying liquid did not affect the level of weed control. No relationship was found between the genetic distance of maize varieties and their sensitivity to selected herbicides. The presence of Fusarium subglutinans, Fusarium proliferatum, and Fusarium verticillioides was found in the samples of maize varieties.
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Václavík, L., J. Ovesná, L. Kučera, J. Hodek, K. Demnerová, and J. Hajšlová. "Application of ultra-high performance liquid chromatography-mass spectrometry (UHPLC-MS) metabolomic fingerprinting to characterise GM and conventional maize varieties." Czech Journal of Food Sciences 31, No. 4 (July 19, 2013): 368–75. http://dx.doi.org/10.17221/177/2013-cjfs.
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The feasibility of metabolomic fingerprinting approach based on ultra-high performance liquid chromatography-quadrupole-time-of-flight mass spectrometry (UHPLC-QTOFMS) was studied to assess its ability to discriminate between maize varieties, and to show the associations between them on the metabolomic level. The non-targeted metabolomic analysis was applied to assess the variability within two varieties grown under different environmental conditions and to characterise the association within a sample set comprising both conventional and transgenic (MON-ØØ81Ø-6) maize varieties cultivated under the same environmental conditions (locality). Typical metabolomic fingerprints were established for individual plants. The plants representing two varieties formed well separated clusters. Metabolomic fingerprints of the second sample set enabled their unambiguous discrimination. The differences in metabolomic fingerprints between maize varieties were identified and documented by grouping in PCA and/or CA. The results indicate a similar genetic basis of transgenic maize varieties as they descend from a MON 810 event. The results explicitly showed that the variability of the metabolites in MON 810 did not exceed the ranges measured within the conventional varieties, thus supporting the concept of substantial equivalence.
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Bhusal, K., and D. Khanal. "Role of Maize Weevil, Sitophilus zeamais Motsch. on Spread of Aspergillus section flavi in Different Nepalese Maize Varieties." Advances in Agriculture 2019 (April 16, 2019): 1–5. http://dx.doi.org/10.1155/2019/7584056.
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Experiments were conducted to find out the role of maize weevil, Sitophilus zeamais Motsch. on spread of green fungus, Aspergillus section flavi, in different varieties of stored maize in laboratory in 2016. Lab experiment was conducted to find the role of weevil on spread of A. flavus on five main varieties of maize grown at Nepal in split plot design, namely, Arun-2, Arun-4, Manakamana-1, Manakamana-3, and Rampur composite with three replications at NAST, Khumaltar, from August to September 2016. One hundred grams of each maize variety was exposed to weevil along with fungus and with fungus only to see the spread of the fungus under presence and absence of weevil. Among the tested five maize varieties, the lowest infestation was observed on Rampur Composite (14.99%) while it was the highest on Manakamana-3 (87.70%). The highest mean infestation (75.58%) was found under weevil released condition while it was lower (62.16%) under nonreleased condition. In presence of weevil, the infestation of the fungus increased and in their absence the infestation was low which signifies the role of weevil in fungal spread. All indices indicate that Rampur composite is the best variety among the five tested varieties in terms of storage under the presence of fungus and weevils. This study also indicates ample scope for further study on different varieties of maize under several storage conditions.
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Paudel, MN. "Emergence of improved varieties of maize (Zea mays L.) as affected by different soil types and planting depths in Chitwan, Nepal." Agronomy Journal of Nepal 1 (February 3, 2013): 23–27. http://dx.doi.org/10.3126/ajn.v1i0.7539.
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Improved open pollinated maize (Zea mays L.) varieties exhibit different emergence reaction as a result of either inferior seed quality or affected by agronomic practices of maize planting. To address problem of low emergence percentage of maize varieties, an experiment was laid out in factorial design under two types of soil (red clay and sandy loam), three level of depth of sowing (7, 14 and 21 cm) for Rampur Composite, Manakamana-1 and Arun-2 maize varieties in Rampur, Chitwan for representing main season (May-August). The result of the experiment revealed that emergence count was highly significant for soil types and depth of sowing among the maize varieties tested. Manakamana-1 expressed lowest percentage (20 and 29%) followed by Arun-2 (22 and 33%) and Rampur Composite (24 and 39%) of emergence under red clay and sandy loam soils, respectively. Likewise, emergence count at 10 days after sowing was recorded highly significant for depth of showing indicating that irrespective of varieties higher the planting depth lower the emergence count.. There was a positive relation between depth of planting and length of mesocotyle resulting loss of seed vigor which furnished low emergence of the maize varieties. It is suggested that depth of sowing affect emergence percentage which consequently have effects on plant population maintenance. Hence, it was concluded that sowing below 7cm deep is not feasible for the tested varieties under red clay and sandy loam soils. DOI: http://dx.doi.org/10.3126/ajn.v1i0.7539 Agronomy Journal of Nepal (Agron JN) Vol. 1: 2010 pp.23-27
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Sharma, Rajiv, Qudratullah Soofizada, Mohammad Hashim Azmatyar, and Elias Mohmand. "Three New Maize Hybrids for Afghanistan." Journal of Agricultural Science 10, no. 6 (May 6, 2018): 349. http://dx.doi.org/10.5539/jas.v10n6p349.
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Afghanistan grows maize in about 0.15 m ha with an annual production hovering around 300,000 tonnes. The country does not have any officially released commercial maize hybrid and relies only on open pollinated varieties for cultivating maize. The countries in region enjoy much higher productivity levels ranging from 3.5 to 5.00 tonnes per ha compared to 2.2 tonnes per ha of Afghanistan. Several maize hybrids were introduced from CIMMYT to test them for adaptation and yielding ability in Afghanistan for the purpose of releasing them in the country. The three public sector maize hybrids described in this communication were tested at several locations viz., Nangarhar province, Kabul, Baghlan and Helmand in Afghanistan during 2012 to 2014 crop seasons. The hybrids/inbreds bred by CIMMYT were tested against the currently grown open pollinated (OP) varieties and they yielded on an average 31 to 38% higher than the currently popular open pollinated maize varieties. The hybrids were released for commercial cultivation in 2014.
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SWANCKAERT, J., J. PANNECOUCQUE, J. VAN WAES, B. DE CAUWER, J. LATRE, G. HAESAERT, and D. REHEUL. "Harvest date does not influence variety ranking in Belgian forage maize variety trials." Journal of Agricultural Science 154, no. 6 (October 29, 2015): 1040–50. http://dx.doi.org/10.1017/s0021859615000994.
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SUMMARYSilage maize variety testing systems usually evaluate new varieties within properly defined maturity groups; within a maturity group, all varieties are harvested on a single harvest date. In a small country like Belgium where growing conditions are similar across the maize growing areas, all tested silage maize varieties, comprising different maturity groups, are harvested on a single date. Under this testing system, only few varieties are harvested at the physiological stage where they theoretically show their optimal performance. In the current research, eight silage maize varieties were monitored from 25 to 40% whole-crop dry matter (DM) content at three locations in Belgium during the period 2007–2009. The optimal harvest date was calculated as the date where whole-crop DM yield, ear DM yield and organic matter digestibility were maximal. The variety rank at the optimal harvest date was compared with the variety rank at any studied single harvest date. Harvest dates where the variety rank was not statistically different to the rank at the optimal harvest date were pooled in a ‘harvest window’. Based on the current data, the harvest window comprised a flexible harvest period of about 14 days. It was therefore concluded that applying a single harvest date is scientifically justified for the ranking of silage maize varieties in Belgium, when the whole-crop DM content is between 28·1 and 40·6% with a maximum difference of 7·2% between all compared varieties.
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Kadafur, Ibrahim Mohammed, Yusuf Lawal Idrisa, and Abbas Shehu. "Adoption of improved maize varieties in northern Guinea Savannah of Borno State, Nigeria." Journal of Agricultural Extension 24, no. 1 (February 4, 2020): 34–41. http://dx.doi.org/10.4314/jae.v24i1.4.
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This study examined the adoption of improved maize varieties in northern Guinea Savanna of Borno State. Primary data were collected by using structured interview schedule. Two hundred maize farmers were systematically selected from. Percentage and logit were used for data analyses. Overall adoption rate was 89.0%. Coefficient of socio-economic and institutional factors such as extension contact (0.0360), farm size (0.2319), education level (0.0460), access to credit (0.6363) and age (0.7619) were found to be significant (P≤0.01) and positively influencing adoption of improved maize varieties. Household size (0.2708) and income level (0.3285) were also significant (P≤0.05) and positively related to likelihood of adoption of improved maize varieties. Non-availability of technology (99%), high cost of technology (92%) and high cost of labour (88%) were the major constraining factors to adoption of improved maize varieties. Community seed production should be encouraged and promoted to facilitate easy access to improved seeds by farmers. The extension system should be strengthened, a policy, which provides adequately trained and equipped extension workers for disseminating extension messages to farmers, re-strengthening of community based organizations and seed companies to introduce labour saving tools like planters and harvesters etc.Keywords: Adoption; improved maize; guinea savannah
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Semassa, A. J., S. W. Padonou, V. B. Anihouvi, N. H. Akissoé, A. Adjanohoun, and L. Baba-Moussa. "Diversité Variétale, Qualité Et Utilisation Du Maïs (Zea Mays) En Afrique De l’Ouest : Revue Critique." European Scientific Journal, ESJ 12, no. 18 (June 29, 2016): 197. http://dx.doi.org/10.19044/esj.2016.v12n18p197.
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Maize (Zea mays) is a cereal cultivated through all the region of the world. Its constitutes one of the cereals the most used for human consumption. The current review focused on the diversity, the nutritional quality and the forms of use of maize in West Africa region. The review allowed to notice that more than twenty varieties of maize were cultivated in Bénin and in the sub-region. With regard to nutritional aspect, those different varieties of maize contained variable amounts of starch (64-78%), fat (4- 6%), protein (7-12%), crude fibers (2-2.5%), ash (1-1.5%) and sugar (1-3%). Potassium (324.8-344 mg /100g), magnesium (107.9-115 mg/100g) and phosphorus (99,6-276 mg/100g) were the main mineral in maize. Likewise, leucine, isoleucine, tryptophane and valine all contained in the germ were the main amino acids in maize. These chemical components can be alone or in a possible synergy of action responsible for numerous technological advantages of maize. Through its chemical and technological characteristics the maize constitutes an important raw material for many culinary recipes in West Africa region. So it is important to make the inventory of the main varieties cultivated in the sub-region, to compare them at both nutritional and technological aspects for prospective actions to undertake in order to improve the yield of these varieties and to guarantee food security for the populations.
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BEREŚ, P. K., S. DRZEWIECKI, M. NAKONIECZNY, M. TARNAWSKA, J. GUZIK, and P. MIGULA. "Population dynamics of Western corn rootworm beetles on different varieties of maize identified using pheromone and floral baited traps." Journal of Agricultural Science 153, no. 8 (April 23, 2015): 1479–90. http://dx.doi.org/10.1017/s0021859615000222.
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SUMMARYThe present paper presents details of the population dynamics of Diabrotica v. virgifera LeConte beetles on six maize varieties of three different maturity classes, i.e. early (FAO 190), medium-early (FAO 250) and medium-late (FAO 280–300), grown in Central and Eastern Europe. The study was conducted in 2009/10 in the south-eastern part of Poland. The D. virgifera beetles were captured using two types of trap: pheromone (PTs) and floral-baited (FTs). Significant differences in beetle counts were found between: (i) the first and second year of the study (higher in 2009 than in 2010); (ii) the varieties of maize and their different growth stages; (iii) early and medium-late varieties of maize. Initially, depending on the availability of maize silk and pollen, the most numerous D. virgifera beetles were found on the early varieties followed by the medium-late varieties. The study also revealed a significant difference in the performance of the two types of trap used to monitor the number of adults, particularly during the initial period when arrival rates were high. Pheromone traps were more effective in catching D. virgifera beetles, especially during the flowering stage of maize. Floral-baited traps were most effective at the end of the active growth of maize, when the preferred food of D. virgifera was unavailable.
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Midega, Charles A. O., John Pickett, Antony Hooper, Jimmy Pittchar, and Zeyaur R. Khan. "Maize Landraces are Less Affected by Striga hermonthica Relative to Hybrids in Western Kenya." Weed Technology 30, no. 1 (March 2016): 21–28. http://dx.doi.org/10.1614/wt-d-15-00055.1.
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Production of maize in western Kenya is severely constrained by the parasitic weed striga. Although productivity of maize can be improved through adoption of improved varieties, adoption of such varieties remains low in the region, as the majority of smallholder farmers still grow unimproved open-pollinated varieties (landraces). The performance of two improved hybrid varieties was evaluated against six landraces in striga-infested soils in western Kenya. The varieties were planted in plots under natural striga infestation and were supplemented with pot experiments under artificial infestation. Striga emergence was lower in landraces than in the hybrid varieties in both field and pot experiments. Similarly, height of maize plants at harvest and grain yields were higher in the landraces than in the hybrids. After three continuous cropping seasons, in all treatments, striga seedbank density increased two to seven times. Seedbank increase was higher with hybrids and two of the landraces, ‘Rachar' and ‘Endere'. These results provide an insight into the potential role landraces could play in efforts toward an integrated management approach for striga in smallholder cropping systems. They also highlight the need to develop hybrid maize lines with local adaptation to biotic constraints, specifically striga.
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Choudhury, Apurba Kanti, Md Samim Hossain Molla, Taslima Zahan, Ranjit Sen, Jatish Chandra Biswas, Sohela Akhter, Sheikh Ishtiaque, et al. "Optimum Sowing Window and Yield Forecasting for Maize in Northern and Western Bangladesh Using CERES Maize Model." Agronomy 11, no. 4 (March 26, 2021): 635. http://dx.doi.org/10.3390/agronomy11040635.
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Determination of the optimum sowing window not only can improve maize yield significantly but also can fit maize in the existing cropping pattern. To get the advantages of sowing maize at the optimum time, a study was designed and carried out at the research field of Bangladesh Agricultural Research Institute, Rangpur, Bangladesh during 2015–2017. Another aim of the study was to forecast the yield of maize for the northern and western regions of Bangladesh using the CERES-Maize model. The study considered 5 November, 20 November, 5 December, 20 December, and 5 January as sowing dates for maize to identify the optimum sowing window. Three hybrid maize varieties, viz., BARI Hybrid Maize-9 (BHM-9), NK-40, and Pioneer30V92 were used. The study was laid out in a split-plot design, assigning the sowing dates in the main plot and the varieties in the sub-plot. To forecast the yield, the daily weather data of 2017 were subjected to run the model along with thirty years (1986–2015) of weather data. The genetic coefficients of the tested maize varieties were obtained through calibration of the model by using the observed field data of 2015–2016 and through validation by using the data of 2016–2017. The seasonal analysis was done using the DSSAT CERES-Maize model to confirm the experimental findings for optimizing the sowing window for maize at the northern region (Rangpur) of the country and subsequently adjusted the model for the western region (Jashore). The model performances were satisfactory for crop phenology, biomass, and grain yield. The NRMSE for anthesis was 0.66% to 1.39%, 0.67% to 0.89% for maturity date, 1.78% to 3.89% for grain yield, and 1.73% to 3.17% for biomass yield. The optimum sowing window for maize at the Rangpur region was 5 November to 5 December and 5 to 20 November for the Jashore region. The CERES-Maize model was promising for yield forecasting of the tested maize varieties. It gave a realistic yield forecast at approximately 45 days prior to the harvest of all the tested varieties. The study results are expected to be useful for both the farmers and the policy planners to meet up the future maize demands.
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Yang, Li, Yu Xin Chi, Yu Feng Wang, Muhammad Zeeshan, and Xun Bo Zhou. "Gradual Application of Potassium Fertilizer Elevated the Sugar Conversion Mechanism and Yield of Waxy and Sweet Fresh-Eaten Maize in the Semiarid Cold Region." Journal of Food Quality 2021 (February 13, 2021): 1–11. http://dx.doi.org/10.1155/2021/6611124.
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Fresh-eaten maize (Zea mays L.) is favored by consumers for its unique flavor, good health, and medical effects. Heilongjiang province is a semiarid cold region with the annual output of 3.35 billion ears, and the demand for fresh eaten maize is increasing in the region. Therefore, improving its yield and quality is urgently needed in this area. In this study, two of thirty varieties (waxy maize Jin-262 and sweet maize Jingke-183) were used and five proportions of potassium (K2O, 120 kg/ha) were applied at sowing, jointing, and large trumpet stages to identify the high yield and quality of fresh-eaten maize under a semiarid cold ecological condition in Daqing, Heilongjiang province, China, during 2017-2018. The results from the screening of eighteen maize varieties showed that waxy maize Jin-262 and sweet maize Jingke-183 had higher starch content and soluble sucrose contents than those of other varieties. While the potassium proportions application during the sowing (20%), jointing (40%), and large trumpet stages (40%) had further significantly increased the starch content, soluble sugar content, sucrose content, and sucrose metabolic enzymes activities of Jin-262 and Jingke-183, however, the yields of Jin-262 and Jingke-183 had increased by applying potassium fertilizer during the sowing stages (50%) and jointing stages (50%). Considering the overall higher maize quality, we recommended the waxy maize Jin-262 and sweet maize Jingke-183 varieties along with application of 20% (sowing), 40% (jointing), and 40% (large trumpet stages) of 120 kg/ha potassium fertilizer for the improvement of grain quality of maize planting in the semiarid cold region. Otherwise, reasonable gradual potassium fertilization might be a wiser option.
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Oliveira, Raquel Barboza Reis de, Rosângela Maria Pinto Moreira, and Josué Maldonado Ferreira. "Adaptability and stability of maize landrace varieties." Semina: Ciências Agrárias 34, no. 6 (December 11, 2013): 2555. http://dx.doi.org/10.5433/1679-0359.2013v34n6p2555.
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Oswald, A., and J. K. Ransom. "Response of maize varieties to Striga infestation." Crop Protection 23, no. 2 (February 2004): 89–94. http://dx.doi.org/10.1016/s0261-2194(03)00173-x.
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Wang, Hu, Zhe Liu, Jin Huang, Yafei Wang, Xiaoyu Chen, Jing Guo, Shaoming Li, Xiaodong Zhang, and Dehai Zhu. "Maize Varieties Test-Site Environment Evaluation System." Sensor Letters 11, no. 6 (June 1, 2013): 1310–15. http://dx.doi.org/10.1166/sl.2013.2877.
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de la Rosa-Millán, Julián, Edith Agama-Acevedo, Antonio R. Jimenez-Aparicio, and Luis A. Bello-Pérez. "Starch characterization of different blue maize varieties." Starch - Stärke 62, no. 11 (September 28, 2010): 549–57. http://dx.doi.org/10.1002/star.201000023.
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Sari, Siti Hapita, Munif Ghulamahdi, Willy Bayuardi Suwarno, and Maya Melati. "Kajian Berbagai Pola Tanam terhadap Peningkatan Produktivitas Jagung dan Kedelai dengan Berbagai Varietas Jagung." Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 48, no. 3 (December 30, 2020): 227–34. http://dx.doi.org/10.24831/jai.v48i3.32267.
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The reduction in agricultural land due to land conversion has encouraged several technological innovations in cultivation systems, including intercropping planting patterns. The study aimed to study various intercropping patterns with several varieties of maize which can increase production. The research was conducted at the Sawah Baru Experimental Station of the IPB University, Darmaga, Bogor, from November 2018 to February 2019 using a split-plot design with three replications. The main plot was the cropping systems, consisting of monoculture, single-row intercropping, double-rows intercropping, and triple-rows intercropping. The subplot was the maize varieties, consisting of Sukmaraga, Bima 19, and BISI 2. Regression and correlation analyses were carried out to determine the relationship between microclimate and productivity. The results showed that the productivity of maize and soybean was affected by the interaction between cropping patterns and varieties. The highest productivity of maize was obtained from the intercropping pattern of double rows of BISI 2 maize (7.33 ton ha-1), while the lowest maize productivity was in the intercropping pattern of a single row of Bima 19 maize (2.93 ton ha-1). The highest productivity of soybean was obtained from the intercropping cropping pattern of a single row of BISI 2 maize. The effect of microclimate on various cropping patterns with productivity in this study was a little. Land equivalent ratios (LER) in all treatments were greater than 1 except for intercropping 1 row of Bima 19 maize, indicating that intercropping can increase land productivity.
Keywords: cropping pattern, intercropping, land equivalent ratio (LER), maize varieties
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Upadhyay, N., Y. N. Ghimire, B. Sharma, Y. Acharya, S. Gairhe, and S. Sapkota. "Factors Affecting Adoption of Maize Varieties in Nepal." Journal of the Institute of Agriculture and Animal Science 35, no. 1 (December 3, 2018): 39–45. http://dx.doi.org/10.3126/jiaas.v35i1.22512.
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This study examined status of adoption of improved maize varieties in Nepal. Six hundred eighty two households were sampled from six districts namely Sindhupalchowk, Lalitpur, Khotang, Dang, Chitwan and Dadeldhura. Data was analyzed through descriptive statistics. The results indicated that the slow growth rate of area, production and yield was around 2.7% p.a. and growth rate is moreover stagnant rate from 1990-2015. Adoption of modern variety was found to be 75% of household. Mean area of maize cultivation in Nepal is 0.431 ha/HH. Only seven improved variety were adopted in large scale and they were adopted in 70.60% of maize cultivating areas. Improved variety Rampur composite, Mankamana-3 and Deuti and Hybrid CP 808 were found to be highly adopted. While CP 808, Shrestha and Rajkumar hybrids were dominating hybrids. Age of household head, Caste, Migration, credit accessibility, cooperative involvement, extension visit, training, formal sector seed availability and knowledge about agricultural insurance were found positive factors affecting adoption of modern variety of maize. However education and livestock numbers found negatively contribute to adoption.
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ÖNER, Fatih. "Variation in Agro-morphological Traits of Some Turkish Local Pop, Flint and Dent Maize (Zea mays L.)." Notulae Scientia Biologicae 11, no. 1 (March 21, 2019): 149–53. http://dx.doi.org/10.15835/nsb11110407.
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Turkish maize accessions collected from north of Turkey were investigated for agro-morphologic variation in three maize kernel types (flint, pop and dent) including 79 accessions. Eight agronomic and morphologic traits (ear length, ear kernel row number, ear height, leaf number, 1000 kernel weight, tassel length, leaf width and leaf length) were analysed by ANOVA and principal component analysis. Varieties and accessions were found significantly different for variance components which were made up high variance due to accessions. Positive correlations were found between agronomic and morphologic traits. Multivariate discriminant function analysis with eight traits revealed that first two of multivariate correlation covered 86.6%, and next 69% of total variation among accessions and the first multivariate discriminant function had high eigenvalue with 76.8% of total variance between varieties belonged to flint and pop maize accessions while the second multivariate variable belonged to flint and dent maize accessions. These multivariate variables correctly classify three maize varieties maintaining maize accessions for their various characteristics with agronomic and morphological traits.
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Tofa, Abdullahi I., Uche F. Chiezey, Bashir A. Babaji, Alpha Y. Kamara, Adnan A. Adnan, Aloysius Beah, and Adam M. Adam. "Modeling Planting-Date Effects on Intermediate-Maturing Maize in Contrasting Environments in the Nigerian Savanna: An Application of DSSAT Model." Agronomy 10, no. 6 (June 18, 2020): 871. http://dx.doi.org/10.3390/agronomy10060871.
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The Crop Environment Resource Synthesis (CERES)-Maize model in Decision Support System for Agricultural Technology Transfer (DSSAT) was calibrated and evaluated with experimental data for simulation of response of two intermediate-maturing maize varieties to different sowing dates in the Nigerian savannas. The calibration experiments involved 14 consecutive field trials conducted in the rainy and dry seasons in Bayero University Kano (BUK), Dambatta, and Zaria between 2014–2019. Two sets of field experiments were conducted simultaneously for model evaluation in Iburu in the southern Guinea savanna zone and Zaria in the northern Guinea savanna zone during 2015 and 2016 cropping seasons. The experiments for calibration had two maize (SAMMAZ-15 and SAMMAZ-16) varieties planted under optimum conditions with no water and nutrients stresses. The trials for model evaluation were conducted using the same varieties under four different nitrogen (N) rates (0, 60, 120 and 180 kg N ha−1). A 30-year (1985–2014) term simulation was performed to determine effect of varying sowing dates on yields of two maize varieties (SAMMAZ-15 and SAMMAZ-16) in the Sudan savanna (SS), northern Guinea savanna (NGS), and southern Guinea savanna (SGS) zones. The calibration results showed that the cultivar coefficients of the two maize varieties resulted in simulated growth and development parameters that were in good agreement with observed parameters. Model evaluation showed a good agreement between simulated and observed data for phenology and growth of maize. This demonstrated the potential of the CERES-Maize model to simulate growth and yield of maize in the Nigeria savannas. Results of 30-year sensitivity analysis with 9 different sowing windows showed that in SS, sowing the intermediate maize varieties from early to mid-June produced the highest grain yields. In NGS, the optimum sowing windows were found between late June and late July for the both varieties. In SGS, the optimum sowing window is from early June to late July for SAMMAZ-15 and mid-June to late July for SAMMAZ-16. These planting windows gave the highest long-term average yields for each variety. The variety SAMMAZ-15 was found to be best performing across the three agro-ecologies. Maize performance was generally higher in NGS than in SGS. SS in the Sudan savanna recorded the lowest yield compared with other locations.