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1
Britwum, Kofi, Eric S. Owusu, and Matty Demont. "Confronting genetic gains with markets: Retrospective lessons from New Rice for Africa (NERICA) in Uganda." Outlook on Agriculture 49, no. 4 (August 20, 2020): 298–310. http://dx.doi.org/10.1177/0030727020948967.
Повний текст джерелаАнотація:
Breeders have two non-exclusive strategic investment options for increasing smallholder farmers’ and consumers’ livelihoods through genetic improvement of crop varieties: (i) enhancing productivity; and (ii) enhancing value and market access. New Rice for Africa (NERICA) varieties with superior agronomic characteristics were bred and introduced in various African countries in the early 2000s. Two decades later, drought tolerant NERICA4 is among the popular upland rice varieties grown across Africa. We analyze market evidence for NERICA4 from Uganda in 2011, i.e. well before it massively reached urban markets, where it is currently commingled with standard rice. We then compare the breeding priorities that would have ensued from the 2011 market evidence with the reality a decade later. Non-hypothetical auction experiments with consumers were conducted in urban Uganda in 2011 to predict potential market share and value of non-fragrant NERICA4 and fragrant NERICA1, relative to two market standards, i.e. non-fragrant Kaiso, and Supa, the most popular fragrant rice variety in the region. Average consumer bids positioned the two NERICAs between both market standards. Whereas NERICA1 easily outcompeted NERICA4 and Kaiso in the non-fragrant rice category, it failed to compete with Supa in the fragrant category. The 2011 market evidence would have suggested breeders prioritize investment in breeding programs for fragrant NERICAs to help smallholders gain access to high-value markets and expand consumers’ choice with cheaper fragrant rice alternatives. However, the popularity of NERICA4 relative to NERICA1 in farmers’ fields seems to suggest that agronomic genetic gains may have outweighed market traits such as fragrance.
2
Shultana, R., MAA Mamun, L. Naher, MAK Bhuiyan, and AJ Mridha. "Response of Nerica Rice to Nitrogen Fertilization." Bangladesh Agronomy Journal 18, no. 2 (July 25, 2016): 9–14. http://dx.doi.org/10.3329/baj.v18i2.28898.
Повний текст джерелаАнотація:
An experiment was conducted during T. Aman season, 2014 at the Agronomy Research Field, Bangladesh Rice Research Institute, Gazipur to determine the optimum rate of nitrogen fertilizer for higher yield in nerica rice. The experiment comprised of three rice varieties viz. NERICA1, NERICA10 and BRRI dhan57; and five nitrogen levels viz. 0, 23, 46, 69 and 92 kg ha-1. The rice var. BRRI dhan57 with 69 and 92 kg N ha-1 produced significantly identical with higher panicles m-2. But NERICA1 and NERICA10 produced higher number of panicles with 46 and 69 kg N ha-1, respectively. However, BRRI dhan57 with 46 kg N ha-1 produced highest grains panicle-1 but NERICA1 and NERICA10 produced higher number of grains panicle-1 with 23 kg N ha-1. The highest percentage of sterility was recorded in NERICA10 with 69 kg N ha-1. The regression analysis gave the optimum dose of nitrogen for NERICA1, NERICA10 and BRRI dhan57 which were 69.25, 74.25 and 85.75 kg N ha-1, respectively.Bangladesh Agron. J. 2015, 18(2): 9-14
3
Kitilu, Mganga Joshua Fimbo. "PHYSIOLOGICAL RESPONSES OF UPLAND RICE; WATER AND NITROGEN UPTAKES AND WATER USE EFFICIENCY UNDER WET AND PARTIAL DRYING SOIL CONDITIONS." International Journal of Research -GRANTHAALAYAH 9, no. 6 (July 19, 2021): 405–17. http://dx.doi.org/10.29121/granthaalayah.v9.i6.2021.3914.
Повний текст джерелаАнотація:
Rice is an important cereal and staple food crop in Tanzania, the rice production has not met the demand, mainly due to water shortage. Dissemination of New Rice for Africa (NERICA) has been in progress to improve production in upland rice ecosystem. A pot experiment was conducted in a split plot design at university farm to elucidate water uptake, water use efficiency and nitrogen uptakes for two NERICA cultivars (NERICA1 and 2) and two Japanese rice cultivars ( and ). Amount of transpired water was recorded every day until maturity. Nitrogen uptake at booting and maturity growth stage were compared between these cultivars. The results indicated that amount of water transpired was greater for NERICA cultivars in the period from booting to maturity, in particular, under the dry soil condition. All the cultivars showed similar slope of regression lines between amount of transpired water and dry matter production (Water use efficiency), Nitrogen concentration per unit weight was higher in NERICA rice than in Japanese rice during grain filling stage. These results indicate that NERICA’s rice cultivars have high productivity due to higher water and Nitrogen uptake during grain filling stage compared with the Japanese rice cultivars tested.
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Moukoumbi, Yonnelle D., Olufisayo Kolade, Khady N. Drame, Moussa Sie, and Marie Noelle Ndjiondjop. "Genetic relationships between interspecific lines derived from Oryza glaberrima and Oryza sativa crosses using microsatellites and agro-morphological markers." Spanish Journal of Agricultural Research 13, no. 2 (May 29, 2015): e0701. http://dx.doi.org/10.5424/sjar/2015132-6330.
Повний текст джерелаАнотація:
<p>New Rice(s) for Africa (NERICA) are high yielding rice varieties mostly cultivated in Sub-Saharan Africa and developed by the Africa Rice Center. This study is aimed at investigating the proportion of introgression of parental genomic contribution of 60 lowland NERICA varieties and establishment of molecular profiling. Agro-morphological data from 17 characteristics was recorded and significant (<em>p</em><0.05) to high significant (<em>p</em><0.0001) differences were obtained with leaf length and width, plant height at maturity, days to heading, maturity, primary and secondary branching of panicles, and grain width and grain thickness. A total of 114 microsatellite polymorphic markers covering 2183.13 cM of the rice genome showed the proportions of alleles introgressed from the donor parent (<em>Oryza glaberrima</em>) into 52 lowland NERICA lines (TOG5681 and IR64)<em> </em>as follows: 11% for BC<sub>2</sub>, 6.07% for BC<sub>3, </sub>and 7.55% for BC<sub>4</sub>. The introgression proportions for the eight remaining lowland NERICA lines derived from other crosses ranged from 5.5 to 11.3%. The proportion recorded with the recurrent parent was 83.99%. The highest introgression proportions of the <em>O. glaberrima </em>allele for all 60 lowland NERICA lines were found on chromosomes 2, 6 and 12 (TOG5681/IR64) and on chromosome 3 with NERIC-L-29 (TOG5681/IR1529-680-3-2). Multivariate analyses performed using an association of agro-morphological and molecular data revealed two major groups according to the distribution of the lowland NERICAs including the lowland NERICAs released were found in cluster 1 of the dendrogram. Genetic and genomic studies, QTL identification and analysis using agro-morphologically significant traits revealed should be used to develop mega-varieties adapted in rice growth conditions in Sub-Saharan Africa.</p>
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Denis, Bryan Elwich John, Kahiu Ngugi, and J. M. Kimani. "Genotypic Performance of Kenyan Rice Cultivars for Grain Yield and Quality." Journal of Agricultural Studies 10, no. 4 (November 27, 2022): 201. http://dx.doi.org/10.5296/jas.v10i4.20372.
Повний текст джерелаАнотація:
Rice is the third most important staple food in Kenya after maize and wheat and it is mostly grown by small scale farmers both for food and cash under irrigated and rainfed production systems. In this study, fourteen F 2.3 segregating populations together with their parental lines, were evaluated during the long and short rainy seasons of 2016/2017 at the Mwea Research Station (KALRO) in a randomized complete block design of three replications for grain yield, quality and agronomic traits. There were significant differences among genotypes for all the traits studied. Genotypes, Nerica 1, Nerica 2 and Basmati-370 matured earliest, whereas genotype, Basmati-370 gave the highest grain yields in both seasons. The F1 generations of crosses of Dourado x Nerica 3 and Mwur 4 x Nerica 3 had the highest positive Specific Combining Ability (SCA) gene effects for panicle length, days to flowering and grain yield. However in the F 2.3 generations, the progenies of Nerica 2 x Basmati-370 and Nerica 3 x Basmati-370 had the highest grain yields. Generations of Nerica 10 x Mwur 4 crosses, had the longest grains whereas the Basmati-370 genotype had the strongest aroma. Generations of NERICA 3 x Basmati 370 and NERICA 2 x Basmati 370 crosses were of mild aroma, but those of K1-99 x KOMBOKA and NERCA 10 were non aromatic. Grain yield was positively significantly correlated with number of productive tillers, number of filled grains and 1000 grain weight indicating that these traits could serve as secondary selection indices for yield. It is inferred that breeding rice cultivars with improved traits for grain yield, long grain and strong aroma would benefit from the utilization of parental and population germplasm identified in this study, in the pursuit of filling the current rice production deficit in the Kenyan consumer markets.
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William Norbert Kuate Tueguem, Jules Patrice Ngoh Dooh, Thierry Atindo Songwe, Alain Heu, Charles Essome Sale, Albert Dongmo Nanfack, Patrice Ngatsi Zemko, and Zachée Ambang. "Reaction of some rice (Oryza sativa L.) varieties to brown spot disease caused by Bipolaris oryzae (Breda de Haan) Shoemaker." Magna Scientia Advanced Research and Reviews 2, no. 2 (June 30, 2021): 028–36. http://dx.doi.org/10.30574/msarr.2021.2.2.0008.
Повний текст джерелаАнотація:
In Africa, rice is produced and is a source of food energy in most developing countries. But its cultivation faces to brown spot disease, caused by Bipolaris oryzae (Breda de Haan) Shoemaker, which is a serious seed-borne and seed transmitted disease of rice worldwide.The aim of this study was to screen rice varieties for resistance to brown spot disease in field conditions inYaoundé. A completely randomized Fisher block design with three repetitions was used during 2 growing seasons (2015 and 2016). Growth, yields and disease (incidence and severity) parameters were evaluated on four rice varieties (Nerica 3 and 8, White rice and Kamkou). Results show that height of the Nerica 8 variety (86.03cm) and the number of tillers of Kamkou variety (21.66) were significantly highest compared to others varieties (P<0.05) at 59 Days After Sowing (DAS). There was no significant difference on disease incidence for the different rice varieties at the end of rice plant cycle. However disease severity was lower on Nerica 3(2.71%) and Nerica8 (2.05%) varieties and higher on White variety (4.57%). Hence, Nerica 3 and 8 varieties were more tolerant to brown spot disease than others varieties. Overall, Nerica 3 (3.68 t ha-1) and Kamkou (3.51 t ha-1) varieties resulted in higher yields than white rice 28.93 t ha-1.
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Adigbo, Sunday Ojo, Philip Joseph Osadebay, Innocent Iseghohi, Cornelius Idowu Alarima, Nnennaya Ogechi Agbenin, Joy Nwakaego Odedina, and Thomas Oladeji Fabunmi. "Screening and evaluation of upland rice (Oryza sativa L.) varieties in inundated soil." Agricultura Tropica et Subtropica 51, no. 2 (June 1, 2018): 63–69. http://dx.doi.org/10.2478/ats-2018-0007.
Повний текст джерелаАнотація:
Abstract Poor germination and subsequent low grain yield of dry seeded upland rice in the existing anaerobic and short niche between lowland rice and dry season crops in the inland valley necessitate the screening of 19 rice varieties. The identification of vigorous growth and short duration upland rice variety in anaerobic condition would optimize this niche. The potted experiment was carried out in the screen house of the Department of Crop Science and Horticulture, Federal University Oye-Ekiti, Ikole campus in 2015 to screen and evaluate the performance of upland rice varieties in inundated soils with a view to selecting the suitable variety or varieties that will fit into the existing niche in the inland valley. The experiment was laid in a complete randomization design and replicated three times. The number of leaves, biomass and grain weight plant−1 of the varieties were significantly (P ≤ 0.05 %) different. The number of tillers observed in WAB 56-104, NERICA 4, NERICA 6, NERICA 3, NERICA 5, NERICA 10, NERICA 9, ARICA 4 NERICA 1, FARO 63, FARO 65 and NERICA 8 varieties were significantly (P < 0.05) lower than those of Igbemo varieties. The numbers of days to 50 % flowering of NERICA 1, NERICA 2, NERICA 10, NERICA 5, NERICA 9, NERICA 3, NERICA 7, NERICA 8, ARICA 4 and WAB 56-104 varieties were the lowest. Although Igbemo brown, Igbemo white varieties had the highest grain yields per plant, their maturity period exceeded the short period. Thus, NERICA 2 and NERICA 5 varieties which had lower number of days to flowering could be considered as candidate varieties that can be optimized in the niche in question.
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Adigbo, Sunday Ojo, Philip Joseph Osadebay, Innocent Iseghohi, Cornelius Idowu Alarima, Nnennaya Ogechi Agbenin, Joy Nwakaego Odedina, and Thomas Oladeji Fabunmi. "Screening and evaluation of upland rice (Oryza sativa L.) varieties in inundated soil." Agricultura Tropica et Subtropica 51, no. 2 (June 1, 2018): 63–69. http://dx.doi.org/10.1515/ats-2018-0007.
Повний текст джерелаАнотація:
Abstract Poor germination and subsequent low grain yield of dry seeded upland rice in the existing anaerobic and short niche between lowland rice and dry season crops in the inland valley necessitate the screening of 19 rice varieties. The identification of vigorous growth and short duration upland rice variety in anaerobic condition would optimize this niche. The potted experiment was carried out in the screen house of the Department of Crop Science and Horticulture, Federal University Oye-Ekiti, Ikole campus in 2015 to screen and evaluate the performance of upland rice varieties in inundated soils with a view to selecting the suitable variety or varieties that will fit into the existing niche in the inland valley. The experiment was laid in a complete randomization design and replicated three times. The number of leaves, biomass and grain weight plant−1 of the varieties were significantly (P ≤ 0.05 %) different. The number of tillers observed in WAB 56-104, NERICA 4, NERICA 6, NERICA 3, NERICA 5, NERICA 10, NERICA 9, ARICA 4 NERICA 1, FARO 63, FARO 65 and NERICA 8 varieties were significantly (P < 0.05) lower than those of Igbemo varieties. The numbers of days to 50 % flowering of NERICA 1, NERICA 2, NERICA 10, NERICA 5, NERICA 9, NERICA 3, NERICA 7, NERICA 8, ARICA 4 and WAB 56-104 varieties were the lowest. Although Igbemo brown, Igbemo white varieties had the highest grain yields per plant, their maturity period exceeded the short period. Thus, NERICA 2 and NERICA 5 varieties which had lower number of days to flowering could be considered as candidate varieties that can be optimized in the niche in question.
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I.I, Elmunsor, Dagash Yaseen. M, and Hamza Nada.B. "Evaluation of Rice (Oryza sativa L.) Genotypes for Yield and Yield Component Parameters•." Journal of Agricultural Science 4, no. 1 (October 24, 2022): 67–80. http://dx.doi.org/10.52981/fajas.v4i1.2755.
Повний текст джерелаАнотація:
This research was conducted to study yield and yield component of 20 rice genotypes. The genetic material of the genotypes was used to measure days to 50% flowering, days to maturity, panicle number/plant, panicle length (cm), number of mature seeds/panicle, number of empty seeds/panicle, grain yield/plant, 1000 seed wt. (gm) and grain yield (t/ha). The results revealed highly significant differences in 2016 for most parameters, significant difference in plant height after 30 and 60 days, leaf area and panicle length but not significant for plant dry weight. The results of 2017 showed similar trend with significant differences in plant height at 30 days, tillers of 90 days and not significant for plant dry weight. The significant yielding genotypes were NERICA 14 (12.30 t/ha) and NERICA4 (7.30 t/ha) in 2016. In 2017, SR 14 (10.42 t/ha) and NERICA 14 (7.00 t/ha) gave the best significant yield. However, for combine analysis SR 14 (8.01 t/ha) and NERICA 14 (9.60 t/ha) were the best.
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Malemba, G. M., F. M. Nzuve, J. M. Kimani, M. F. Olubayo, and J. W. Muthomi. "Combining Ability for Drought Tolerance in Upland Rice Varieties at Reproductive Stage." Journal of Agricultural Science 9, no. 3 (February 13, 2017): 138. http://dx.doi.org/10.5539/jas.v9n3p138.
Повний текст джерелаАнотація:
Rice is an important food crop for human population ranking second among the mostly consumed cereal grains worldwide. Upland rice production is greatly constrained by drought stress resulting from rainfall variation patterns. Cultivation of drought tolerant varieties is considered the best option for drought management in rice production. The already released upland rice varieties are drought susceptible and have poor grain attributes hence, the aim of this study was to determine the combining ability for drought tolerance in upland rice. Four upland NERICA and two upland rice varieties were selected as parents for generating F1s crosses following 6 × 6 complete diallel. The generated 30 F1 crosses were advanced to F2 population for field evaluation. The F2 progenies together with six parents were planted in two sites; KALRO-Mwea Center Farm and Kirogo research Farm following a randomized complete block design in three replications. Drought stress was initiated 45 days after sowing after which data was collected on drought and agronomic parameters. The study revealed large genetic variations among the genotypes used. Both GCA and SCA were significant indicating the importance of both additive and non additive gene action in the expression of studied traits. In this study NERICA 2 and NERICA 15 were identified as good combiners for drought tolerance and grain yield under drought conditions. The single crosses namely; NERICA 15 × NERICA 2, NERICA 1 × NERICA 15, NERICA 11 × NERICA 15 and NERICA 2 × NERICA 15 were identified as superior for improving yield under drought conditions.
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Kamanda, Philip Jimia, Edwin Julius Jeblar Momoh, Masa Veronicah Motaung, and Keiwoma Mark Yila. "Factors Influencing Adoption of the New Rice for Africa Technologies by Smallholder Farmers in Selected Chiefdoms in Sierra Leone." Journal of Agricultural Extension 26, no. 3 (August 8, 2022): 23–33. http://dx.doi.org/10.4314/jae.v26i3.3.
Повний текст джерелаАнотація:
The study examined factors influencing adoption of NERICA rice production and post-harvest technologies by smallholder farmers in Magbema and Kaiyamba chiefdoms in Sierra Leone. The data were purposively obtained from 150 smallholder NERICA farmers through a multi-stage sampling procedure from NERICA farmers in both chiefdoms. A structured questionnaire was used to collect data, analyzed with the aid of percentage and logistic regression. Demographic and socioeconomic characteristics of the farmers significantly influenced the adoption of recommended NERICA production technologies. For the post-harvest technologies, the R2 of 0.26 suggests that only the socioeconomic characteristics of the farmers significantly influenced the adoption of the recommended NERICA post-harvest technologies. Contact with extension agents, promotion of a literacy drive to raise technological awareness among farmers, and timely input delivery to attract and sustain the farmers’ interest to adopt NERICA rice production and post-harvest technologies.
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Yamamoto, A., H. Sawada, I. S. Shim, K. Usui, and S. Fujihara. "Effect of salt stress on physiological response and leaf polyamine content in NERICA rice seedlings." Plant, Soil and Environment 57, No. 12 (December 1, 2011): 571–76. http://dx.doi.org/10.17221/413/2011-pse.
Повний текст джерелаАнотація:
NERICA is a new African rice variety, developed by the West African Rice Development Association (WARDA) in 1990s. NERICA rice shows both vigorous growth and tolerance of stressors such as drought and disease. The purpose of this study was to clarify the physiological and biochemical responses to salt stress of NERICA rice seedlings. The degree of growth inhibition caused by salt stress was small in NERICA rice varieties as compared with japonica Nipponbare. Na accumulation in leaf blades was high in salt-sensitive varieties. Accumulation of proline, a known compatible solute, was also induced by salt stress, especially in salt-sensitive varieties; it was thought that this accumulation was brought on salt-stress injury. The contents of polyamines, especially spermidine, were high in the pre-stressed leaf blades of NERICA rice seedlings. After the salt-stress treatment, the polyamine content of leaf blades differed with the degree of salt tolerance of the NERICA rice seedlings. These results suggested that the salt tolerance of NERICA rice seedlings might be associated not only with the regulation of Na absorption and translocation but also with their ability to maintain leaf polyamine levels under salt-stress conditions.
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IWATA-HIGUCHI, Momoko, Jun-Ichi SAKAGAMI, and Sachio MARUYAMA. "Effect of soil moisture stress at booting and flowering stages on pollen development, pollination and fertilization in upland NERICA cultivars." DECEMBER 2020, no. 14(12):2020 (December 10, 2020): 1935–41. http://dx.doi.org/10.21475/ajcs.20.14.12.2774.
Повний текст джерелаАнотація:
Spikelet sterility induced by soil moisture stress during reproductive development greatly limits grain yield in upland rice. This study aimed to elucidate differences in responses to soil moisture stress for pollen development, pollination and fertilization among upland rice cultivars. A greenhouse experiment with a split-plot design was performed for five different soil moisture treatments (T1 to T5) as the main plots and three cultivars (NERICA 1, NERICA 4 and Yumenohatamochi) as subplots, each with three replicates. Plants in pots were grown under well-watered condition (T1) and various moisture stress conditions: moderate at the booting stage (T2), severe at the booting stage (T3), moderate at the flowering stage (T4) or severe at the flowering stage (T5). During the 9-day stress period, soil moisture was maintained at -10 to -20 kPa for moderate moisture stress or -20 to -49 kPa for severe moisture stress under controlled irrigation. NERICA 1 had fewer differentiated microspores and developed pollen grains in T2 and T3 and showed poorer anther dehiscence and fewer pollen grains on the stigma than did NERICA 4 and Yumenohatamochi. NERICA 4 showed a lower percentage of basal dehiscence in T4 and T5, causing fewer pollen grains to be deposited on the stigma than for NERICA 1 and Yumenohatamochi. The results indicate that the highly sensitive process of fertilization are pollen development in NERICA 1 and pollination in NERICA 4 under soil moisture stress
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ADIGBO, S. O., M. O. OLOJEDE, P. J. C. HARRIS, and O. AJAYI. "RATOONED LOWLAND NERICA RICE VARIETIES AS AN OPTION FOR TRIPLE CROPPING IN INLAND VALLEYS OF DERIVED SAVANNAH IN NIGERIA." Experimental Agriculture 48, no. 4 (September 3, 2012): 551–62. http://dx.doi.org/10.1017/s0014479712000452.
Повний текст джерелаАнотація:
SUMMARYAlthough triple cropping in inland valleys of Nigeria is technically feasible, the third crop between the main crop and dry season non-rice crop has been considered not to be economically viable because of poor crop establishment due to soil inundation. The identification of an appropriate technology with low input, such as ratooning, would allow this niche to be utilized. Field experiments were conducted at the University of Agriculture, Abeokuta, Nigeria in 2007–2008 and 2008–2009 cropping seasons to evaluate the performance of the main and ratooned crops of lowland NERICA (New Rice for Africa) rice (Oryza sativa L.) varieties in a lowland rice–ratooned rice–fluted pumpkin (Telfairia occidentalis Hook F.) sequence. The experiment was laid out in a randomized complete block design with three replicates. The lowland rice varieties used were NERICA-L 19, NERICA-L 20, NERICA-L 22, NERICA-L 24, OFADA, NERICA-L 26, NERICA-L 41, NERICA-L 42, NERICA-L 44 and NERICA-L 47. The grain yield of the main rice crop ranged from 5.0 to 7.3 t ha−1 in 2007–2008 cropping season and from 4.1 to 9.1 t ha−1 in 2008–2009. The ratooned rice had a grain yield of 1.0–4.7 t ha−1 in 2007–2008 and 1.2–3.4 t ha−1 in 2008–2009. The total grain yield obtained in 2007–2008 from the main and ratooned rice crops in seven months was 6.7–11.6 t ha−1, while in 2008–2009 it was 5.3–2.6 t ha−1. The fresh leaf yield of fluted pumpkin ranged from 14.6 to 16.9 t ha−1 in 2007–2008 and from 18.3 to 19.8 t ha−1 in 2008–2009, similar to previously reported rainy season unfertilized yields. Thus, a ratooned rice crop appears to be a feasible technology capable of boosting rice production and consequently increasing the overall productivity of the inland valley in a rice–rice–vegetable cropping sequence.
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Edu, C. N., and S. I. Oluka. "Effects of Sawah Technology on the growth and yield performance of NERICA rice varieties in the South-East Nigeria." Nigerian Journal of Technology 41, no. 5 (November 9, 2022): 902–12. http://dx.doi.org/10.4314/njt.v41i5.11.
Повний текст джерелаАнотація:
Field experiment research was conducted to determine the effects of Sawah Technology on NERICA rice production from April to December 2020 during the rainy season at two different locations, namely, Ishieke and Imeoha Nkerefi in Ebonyi State and Enugu State respectively, both in the south-east of Nigeria. Six NERICA rice varieties: Sipi692033, WITA 4, NERICA 34, NERICA 1, NERICA 7 and NERICA 19 were used for the study on two Sawah fields and two non-Sawah fields measured 0.3ha each. Research data, namely: height, width, panicle length, grain number, and grain weight were collected starting from nursery to maturity of the rice. The study revealed that Sipi692033 has the highest yield of 5 tons/ha under Sawah Technology condition. The findings of the study show that the panicle length, grain number per panicle, weight of 1000 grains, and yield (ton/ha) were higher by 55.56 %, 50.00 %, 39.41 %, and 87.50 % respectively in the Sawah field relative to the non-Sawah field. The study concludes that Sawah technology enhances rice yield by at least 50 per cent.
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OLOGUNDUDU, Akinbode Foluso, Adekunle Ajayi ADELUSI, and Richard Olutayo AKINWALE. "Effect of Salt Stress on Germination and Growth Parameters of Rice (Oryza sativa L.)." Notulae Scientia Biologicae 6, no. 2 (June 10, 2014): 237–43. http://dx.doi.org/10.15835/nsb629163.
Повний текст джерелаАнотація:
The response of eight varieties of Oryza sativa L. (‘NERICA 1’, ‘NERICA 5’, ‘NERICA 12’, ‘NERICA 19’, ‘IR 29’, ‘IR 20’, ‘IWA 11’, and ‘POKKALI’, a salt tolerant check) against four salinity levels (0, 5, 10, and 15 ds m-1) were studied at germination and early growth stages. Data were analyzed using Statistical Analytical System (SAS) and means were separated by Duncan Multiple Range Test (DMRT) for Final Germination Percentage (FGP), Speed of Germination (SG), Germination Energy Percentage (GE%), shoot and root length and root and shoot dry weight. Based on dry matter yield reduction, rice varieties were classified as tolerant (T), moderately tolerant (MT), moderately susceptible (MS) or susceptible (S). Germination was not recorded at 20 ds m-1 salt concentration in all cultivars. Salinity decreased FGP, SG, GE% and led to reduction in shoot and root length and dry weight in all varieties and the magnitude of reduction increased with increasing salinity stress. Rice varieties ‘NERICA 12’, ‘IR 20’, ‘IWA 11’ and ‘NERICA 19’ showed greater salt tolerance during germination (germinated at 10 ds m-1 salinity). However, ‘NERICA 1’, ‘IR 29’, and ‘IR 20’ performed better based on dry matter yield reduction. The result suggested that ‘NERICA 1’, ‘IR 29’, and ‘IR 20’ might be used for further study of salinity effect on growth processes and physiological consequences at advanced stage of growth. The physiological responses of rice plants to salinity at various developmental stages are therefore critical for identifying salinity tolerance in the cultivars.
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Gambo, B. K., E. A. G. Manza, I. A. Kassim, M. G. Maiangwa, and M. Dalhatu. "Economic analysis of NERICA and non NERICA rice producers in Kaduna State, Nigeria." Journal of Agriculture, Forestry and the Social Sciences 14, no. 2 (September 30, 2019): 1. http://dx.doi.org/10.4314/joafss.v14i2.1.
Повний текст джерела
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Bala, Jamilu, Abdulkareem Yusuf Hauwa, and Yahaya Mumini Musa. "Impact of adoption of the new rice for Africa 1 on farmers’ yield of in Gombe State, Nigeria." Journal of Agricultural Extension 24, no. 4 (October 28, 2020): 72–81. http://dx.doi.org/10.4314/jae.v24i4.8.
Повний текст джерелаАнотація:
The study assessed the impact of NERICA 1 rice adoption on farmers’ yield in Gombe State, Nigeria. Multi-stage sampling procedure was used to select two local governments areas, from which 328 farmers were randomly selected as sample size for the study. Data were collected through structured questionnaire and analyzed with percentages and mean. The result revealed that the average farm size was 1.5 for NERICA 1 and 2.1 non-NERICA 1 farmers. The finding showed that only (3%) of the respondents adopted NERICA 1 rice technology. The result showed a difference of 503.3 Kg/ha between the yield of respondents after the comparison and it shows significant impact at 1% probability level. The adoption of NERICA 1 rice has an impact on the yield of respondents. Farmers should be linked with seed companies and research institutes through extension agents to access certified seeds at an affordable price.
Keywords: Impact, rice, adoption, yield
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Alia, Didier Yélognissè, Aliou Diagne, Patrice Adegbola, and Florent Kinkingninhoun. "Distributional Impact of Agricultural Technology Adoption on Rice Farmers' Expenditure: The Case of Nerica in Benin." Journal of African Development 20, no. 2 (October 1, 2018): 97–109. http://dx.doi.org/10.5325/jafrideve.20.2.0091.
Повний текст джерелаАнотація:
Abstract In this paper, we assess the impact of Nerica, a family of high-yielding hybrid rice varieties, on welfare in Benin. Our empirical analysis utilizes instrumental variable and quantile treatment effects methods to estimate the impacts of cultivating Nerica on welfare along the income distribution. We find that Nerica adoption increases households' expenditure across the entire distribution of income. The quantile treatment effects are statistically different from the average treatment effects, suggesting substantial heterogeneity in the impacts of the adoption of Nerica on welfare. We also find that, in absolute terms, the impact for farmers located in the upper half of the income distribution is the largest. However, farmers at the bottom of the income distribution also experienced large proportional increase in welfare. Altogether, our results suggest that the adoption of improved rice seeds reduces poverty and has the potential to contribute to the reduction of income inequality among farmers.
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Mamun, A. A., U. A. Naher, and M. Y. Ali. "Effect of Seed Priming on Seed Germination and Seedling Growth of Modern Rice (Oryza sativa L.) Varieties." Agriculturists 16, no. 1 (July 21, 2018): 34–43. http://dx.doi.org/10.3329/agric.v16i1.37532.
Повний текст джерелаАнотація:
The experiment was carried out in the Seed Laboratory of Bangladesh Agricultural Development Corporation (BADC), Gazipur during June to July 2014 to investigate the effects of different priming methods on seed germination and the seedling growth of some rice (Oryza sativa L.) varieties. Four rice varieties: 1) Nerica, 2) BRRI dhan51, 3) BRRI dhan41 and 4) BRRI dhan49; and six priming treatments: 1) On-farm Priming, 2) Hardening, 3) Hydro-priming, 4) Osmo-hardening, 5) Vitamin C Priming and 6) Control were used in the experiment. The experiment was laid out in a completely randomized design (CRD). The treatments were replicated three times. The germination percentage and seedling growth parameters differed significantly among the priming treatments. For germination, Nerica variety showed poor performance, whereas the other varieties were found superior. Among the priming treatments, Vitamin C priming and Osmo-hardening were found superior. In case of interaction, germination was increased with Vitamin C priming and Osmo-hardening in Nerica. For seedling growth parameters, particularly vigor index, shoot and root lengths, BRRI dhan41 and BRRI dhan51 were found superior. The priming treatment Vitamin C and Osmo-hardening performed better than others. Seedling vigor index was increased with Vitamin C priming and Osmo-hardening in Nerica variety. Shoot length at 15th day was influenced by hydro-priming in Nerica. Root length at 10th day was significantly increased with hardening in BRRI dhan41. Vitamin C priming and Osmo-hardening could therefore, be used for improving germination and seedling growth of Nerica. The Agriculturists 2018; 16(1) 34-43
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Noori, Zubair, Abdul Ghani Qarluq, Kifayatullah Kakar, Saidajan Abdiani, and Noor Agha Nawakht. "Comparison of physicochemical properties, grain quality, and ultrastructure of rice cultivars." International Journal of Innovative Research and Scientific Studies 3, no. 1 (March 4, 2020): 20–26. http://dx.doi.org/10.53894/ijirss.v3i1.29.
Повний текст джерелаАнотація:
Genetic background, environmental conditions, and agronomical practices could influence yield components, grain quality, and physicochemical properties of rice. The study aim was to investigate the variations in yield potential, quality traits, and morphological observation among Akitakomachi (japonica), IR-28 (indica), and NERICA-4 (hybrid) varieties under the same environmental and agronomical conditions. For this, the cultivars were compared in a randomized complete block design with three replications at the paddy field of Tsukuba International Center, JICA, Tsukuba, Japan in 2017. All cultivars were transplanted at a spacing of 15×30 cm using three seedlings per hill. The results exhibited that Akitakomachi had a higher number of panicles per m2 (344.3), and the ripening ratio (94.3%) across all cultivars. In addition, IR-28 and Akitakomachi achieved significantly higher rough rice yield (6.9 t/h & 6.1 t/h), respectively, compared to NERICA-4 (4.9 t/h). However, NERICA-4 was associated with the significantly higher amylose and protein contents, which resulted in the reduction of the taste point than other cultivars. Furthermore, the lowest grain transparent (34.2%) and highest chalky grain (47.7%) were obtained in NERICA-4, which leads to lower grain quality. IR-28 and NERICA-4 were classified as long and slender grain types, whereas, Akitakomachi as a short and medium grain, respectively. The micrographs observation displayed that regular starch granules with polyhedral shape were arranged without air gaps in transparent grains of all cultivars. In contrast, the endosperm of chalky grains in NERICA-4 and IR-28 revealed that irregular starch granules with round shape were loosely packed. Thus, each cultivar should be considered based on growing regions and the cultivated aims.
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Sakariyawo, Olalekan Suleiman, Akeem Abdulahi Oyekanmi, Oluwakemi Oladoyin Bakare, Sunday Gbenga Aderibigbe, Christopher John Okonji, and Thomas Oladeji Fabunmi. "Growth and Yield Responses of NERICA Rice Varieties to Different Sources of Organic Fertilizer in Transitory Rainforest Zone of Nigeria." Agricultura tropica et subtropica 46, no. 2 (June 1, 2013): 43–51. http://dx.doi.org/10.2478/ats-2013-0008.
Повний текст джерелаАнотація:
Abstract Two field studies were conducted to investigate growth and yield responses of NERICA rice cultivars to organic fertiliser sources, at the Teaching and Research Farm of Federal University of Agriculture, Abeokuta (FUNAAB) between May 31 and September 30 of 2009 and OgbeEruku Village (OEV), Owode - Egba, Ogun State, Nigeria between July 7 and November 30 also in 2009. FUNAAB is a transition between rainforest and a derived savanna whereas OEV is in a rainforest zone. The experiment was a 10 × 3 × 2 factorial in a Randomized Complete Block Design (RCBD) replicated three times. The treatments were three rice varieties (NERICA 1, NERICA 2, and Ofada) and three application rates of different manure types (poultry manure at 0 t/ha-1, 10 t/ha-1 and 20 t/ha-1; cow dung at 0 t/ha-1, 7 t/ha-1 and 14 t/ha-1; swine manure at 0 t/ha-1, 3.5 t/ha-1 and 7 t/ha-1). These levels are equivalent to 0 kg N/ha-1, 45 kg N/ha-1, and 90 kg N/ha-1. The results indicated significant (P < 0.05) varietal variability on dry matter accumulation at maturity in the order NERICA 1 > Ofada > NERICA 3. Inorganic fertiliser source at recommended rate recorded significantly (P < 0.05) higher effect on all growth parameters compared to organic sources. Growth characters were significantly higher at FUNAAB than OEV, conversely grain yield was significantly higher at OEV, where NERICA 1 at higher application rates of poultry and swine manure recorded grain yield comparative to inorganic fertiliser at recommended rate.
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Kostylev, P. I., E. V. Krasnova, A. V. Aksenov, and J. Lamo. "The mutual study of the Ugandan and Rostov rice varieties." Grain Economy of Russia, no. 6 (December 22, 2020): 45–50. http://dx.doi.org/10.31367/2079-8725-2020-72-6-45-50.
Повний текст джерелаАнотація:
Rice is one of the most important food crops in the world. The development of new rice varieties requires a thorough study and involvement of gene pool from different countries in breeding work. The purpose of the current study was to conduct a mutual ecological testing of the rice varieties in the Rostov region of Russia (FSBSI “Agricultural Research Center “Donskoy”) such as ‘Akustik’, ‘Aromatik 1’, ‘Aromatny’, ‘Kuboyar’, ‘Yuzhanin’ and the Ugandan (NaCRRI) ‘Nerica 1’, ‘Nerica 4’, ‘Komboka’, ‘Wita 9’. These samples have shown a wide range of resistance to blast and other diseases. The research was carried out in the Proletarsky district of the Rostov region. As a result, the rice varieties were studied for a number of important economic and biological traits. The growing season from sowing to ripening was 131–139 days for two varieties ‘Nerica 1’ and ‘Nerica 4’ under the conditions of the Rostov region, and 110 days for the standard variety ‘Komandor’. The other two varieties ‘Komboka’ and ‘Wita 9’ were very late maturing and did not bloom. All samples had a modern low-growing plant habit with upright rigid leaves and long drooping panicles (17–23 cm). Plant height of the Ugandan varieties ranged from 70 to 90 cm. The grains were elongated with 29–31 mg of weight. Number of spikelets per panicle was 85 and 200, respectively. The varieties ‘Nerica 1’ and ‘Nerica 4’ were used in hybridization with the Russian varieties ‘Kontakt’ and ‘Boyarin’. The preliminary study of Russian rice varieties in Uganda showed that RU 105 (‘Aromatny’) and RU 101 (‘Aromatik 1’) were resistant to rice yellow spot virus (‘RYMV’), blast and brown leaf spot. The varieties were selected for further study in the conditions of Uganda.
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Worou, Omonlola Nadine, Thomas Gaiser, Mouinou Attanda Igué, Charlemagne Gbemavo, and Brice Augustin Sinsin. "Responses of Upland NERICA Rice to Fertiliser Application and Fallow Management in Different Agro-Ecological Zones of Benin Republic." European Scientific Journal, ESJ 13, no. 27 (September 30, 2017): 152. http://dx.doi.org/10.19044/esj.2017.v13n27p152.
Повний текст джерелаАнотація:
Recent findings reported that introduction of legumes as an intercrop or in rotation to minimize external inputs can reverse the declining of soil fertility in upland rice agrosystem and so improve the productive capacity of farms. The objectives of the study were to assess (1) the effects of rotation of upland rice with other crops, of fertiliser application and of rice varieties on rice yield and (2) the interaction effects of rotation, fertiliser application and variety on rice production. An experiment was carried out from 2011 to 2012 in 2 zones in Benin Republic, West Africa. Three rice rotation treatments were established where in the year preceding rice cropping the following pre-crops were grown: (1) natural fallow regrowth (2) sole cowpea crop and (3) cowpea/maize intercrop. The following year, 3 NERICA varieties were cultivated in the three pre-crop treatments with and without fertiliser application. With respect to combined effect of NP mineral fertiliser and rotation, a consistent increase in rice yield over all varieties was only observed with maize-cowpea intercrop preceding rice in the Guinean zone. Improved fallow with cowpea combined with fertiliser was beneficial for NERICA 2 and NERICA 4 in the Sudano –Guinean zone and with NERICA 1 and NERICA 4 in the Guinean zone. Rice in rotation with maize-cowpea intercrop and in combination with NP mineral fertiliser can easily fit into the current smallholder farming systems under rain-fed conditions in the Guinean zone, but is not recommendable for the Sudano- Guinean zone.
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Aderibigbe, Sunday Gbenga, Olalekan Suleiman Sakariyawo, Kehinde Adebayo Okeleye, Sylvester O. Oikeh, Francis E. Nwilene, Olupomi Ajayi, Christopher John Okonji, and Akeem A. Oyekanmi. "Yield and Iron Toxicity Response of Rice Cultivars to Nitrogen and Phosphorus Application Rates in Lowland Ecology of Moist Savanna of Northern Nigeria." Journal of Agricultural Studies 3, no. 2 (May 25, 2015): 114. http://dx.doi.org/10.5296/jas.v3i2.7415.
Повний текст джерелаАнотація:
Evaluation of ameliorative effect of nitrogen and phosphorus rates on iron toxicity of lowland rice was examined. Trials were conducted in the Research Farm of National Cereal Research Institute, 2006 and 2007 wet season. The experiment was laid out in a randomized complete block design (RCBD) in split-split-plot arrangement replicated three times. The main blocked consisted of three levels of phosphorus (0, 30 and 60 P205 kg ha-1); the sub-block four levels of nitrogen (0, 30, 60 and 120 N kg ha-1)and the sub-sub-block ten rice varieties (five lowland NERICAs (NERICA L-19, 20, 41, 42 and 60), four improved sativa (FKR 19, TOX 4004, BW 348-1and WITA 4) and one local variety (Ebagichi). Significant interactions (P <0.05) of phosphorus × nitrogen × variety at 42 and 63 DAT were observed on iron toxicity score with significant depression at 30 kg P205 ha-1 of lower nitrogen rates in all varieties except NERICA L-60. Increasing application rates of nitrogen resulted in increase in grain yield, while maximum grain yield was observed at 30 kg P205 ha-1. WITA 4 at lower N application rates and 30 kg P205 ha-1 remained the most promising in terms of grain yield and iron toxicity tolerance in the moist Savanna of northern Nigeria.
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Touré, Amadou, Jonne Rodenburg, Kazuki Saito, Sylvester Oikeh, Koichi Futakuchi, Dieudonné Gumedzoe, and Joel Huat. "Cultivar and Weeding Effects on Weeds and Rice Yields in a Degraded Upland Environment of the Coastal Savanna." Weed Technology 25, no. 3 (September 2011): 322–29. http://dx.doi.org/10.1614/wt-d-10-00172.1.
Повний текст джерелаАнотація:
Weeds are a major constraint to rice production in labor-limited, upland rice-based systems in West Africa. The effects of weeding regimes and rice cultivars on weed growth and rice yield were investigated at two upland locations (Abomey-Calavi and Niaouli) in the degraded coastal savanna zone of Benin in 2005 and 2006 with below-average rainfall. Four weeding regimes (hoe weeding at 21 d after sowing [DAS], delayed hoe weeding at 31 DAS, hoe weeding at 21 and 42 DAS, and a no weeding control) were the main plot treatments. Cultivars comprising three interspecific upland rice cultivars (NERICA 1, NERICA 2, and NERICA 7) and the parents (Oryza sativaWAB56-104 andO. glaberrimaCG14) were tested in subplots. The most dominant weed species identified were Jamaican crabgrass,Mariscus, and silver spinach. Rice yield was generally low because of drought stress; none of the experiments had a higher mean yield than 1,400 kg ha−1across cultivars. Across cultivars, the best weeding regimes in terms of weed control and rice yields were single weeding at 31 DAS (W31) and double weeding at 21 and 42 DAS (W21+42). Under these weeding regimes, WAB56-104 out-yielded the three NERICA cultivars. CG14 showed the strongest weed suppressive ability (WSA) in Abomey-Calavi but did not have strong WSA in Niaouli because of lower biomass accumulation. WSA of WAB56-104 was similar to that of the three NERICA cultivars. Single weeding at 31 DAS, together with the use of cultivars with good adaptation to unfavorable rice growing conditions, would increase land and labor productivity of upland rice-based systems in West Africa.
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Adigbo, Sunday Ojo, Joy N. Odedina, Clement G. Afolabi, Adebola A. Osipitan, M. Agbonlahor, T. O. Fabunmi, C. O. Adejuyigbe, F. G. Atanda, and M. L. Nweke-Okoh. "Response of lowland rice-ratooned rice-fluted pumpkin sequence to fertilizer in rainfed inland valley in derived savannah of Nigeria." Acta agriculturae Slovenica 109, no. 1 (January 24, 2017): 43. http://dx.doi.org/10.14720/aas.2017.109.1.04.
Повний текст джерелаАнотація:
<p>Trial was carried out at Federal University of Agriculture, Abeokuta, Nigeria between 2010 and 2012 to determine response of lowland rice-ratooned rice-fluted pumpkin sequence to fertilizer. Experiment was laid out in Randomized Complete Block Design arranged in split-split plot in three replicates. Three rice genotypes constituted the main treatments sown in May and harvested in August. Split fertilizers application constituted sub-plot treatments were 90:45:45 (single dose), 45:22.5:22.5 & 45:22.5:22.5 (1:1), 30:15:15 & 60:30:30 (1:2) and 60:30:30 & 30:15:15 (2:1) NPK ha<sup>-1</sup> at tillering and heading. N-fertilizer rates were sub-sub plot treatment and applied to ratooned ‘NERICA L-42’ had the tallest plants compare to others. ‘Ofada’ had the lowest number of days to 50 % flowering for main and ratooned rice, while ‘NERICA L-42’ had the highest number of days to 50 % heading. ‘NERICA L-41’ variety had the highest grain yield in main and ratooned rice. Based on this study, ‘NERICA L-41’ plus its ratooned rice obtained from single dose NPK and zero N-fertilizer plots produced grain yield of 4.69 t ha<sup>-1</sup>.</p>
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Peter, A. "DETERMINATION OF THE OPTIMUM MATURITY OF NEW RICE FOR AFRICA USING ARTIFICIAL NEURAL NETWORK." FUDMA JOURNAL OF SCIENCES 5, no. 1 (June 29, 2021): 502–10. http://dx.doi.org/10.33003/fjs-2021-0501-596.
Повний текст джерелаАнотація:
The New Rice for Africa (NERICA) is a child birth of research to improve upon the production of rice in sub-Sahara Africa due to challenges of shortages in agricultural food production. Two major varieties were obtained, for low lands and uplands. NERICA-4 is commonly suited for uplands and has delicious taste as compared to the other upland varieties. However, the problem of loss of grains at harvest which translates to low productivity amongst other factors needs to be addressed. In this paper, about 750m2 farm land was cultivated with NERICA-4 rice variety and 60 images at different maturity period with ten features extracted, preprocessed and processed using MATLAB2018Ra software. The processed images were classified using Artificial Neural Network to determine the optimum maturity period based on visual properties. 93.30% classification accuracy was obtained. This shows that when made operational, the loss of grains can be drastically reduced and productivity increased
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Eze, Paul, Ike Oluka, and Nkechi Eze. "Determination of the rheological characteristics of some varieties of new rice for Africa (NERICA) relevant to its processing." Journal on Processing and Energy in Agriculture 26, no. 2 (2022): 79–82. http://dx.doi.org/10.5937/jpea26-38886.
Повний текст джерелаАнотація:
The pasting properties of some NERICA (New Rice for Africa) varieties were determined using the rapid visco-analytical machine (RVA). The studied varieties include FARO 44, FARO 52, FARO 57, FARO 60, and FARO 61. The parameters assessed include the pasting temperature, peak time, peak or maximum viscosity, hot paste viscosity or trough, cold paste or final viscosity, breakdown, and setback. Results obtained indicated that the pasting characteristics of NERICA varieties studied exhibited good pasting behavior. Results showed that peak viscosity, final viscosity, hot paste viscosity, breakdown, and setback ranged from 30.83 to 85.17 RVU; 62.21 to 167.13 RVU; 25.83 to 76.88 RVU; and 5.01 to 8.29 RVU; and 31.38 to 81.96 RVU, respectively. There were significant effects of moisture content and temperature (p < 0.05) on all parameters studied. These generated results of the pasting characteristics of NERICA will be extremely useful in determining their suitability in food and other relevant industries.
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Rahab, Magoti, Mayumi Kikuta, George Chemining’wa, Josiah Kinama, John Kimani, Hiroaki Samejima, Patrick Gicheru, and Daigo Makihara. "Growth of Rice Varieties in Different Kenyan Soil Types Under Water-Deficit Conditions." Journal of Agricultural Science 11, no. 6 (May 15, 2019): 1. http://dx.doi.org/10.5539/jas.v11n6p1.
Повний текст джерелаАнотація:
The growth of 20 rice varieties, including both lowland and upland varieties, was evaluated in Kenya under well-watered and water-deficit conditions in four different soil types (black cotton, red clay, volcanic ash, and sandy clay) to compare the adaptability of these varieties to the two water regimes. Under water-deficit condition, after terminating irrigation, the reduction in soil water potential differed markedly according to soil type. The rice varieties tested were classified into four groups, which were largely consistent with differences in rice variety ecotype. We confirmed that lowland varieties such as Basmati 370 should not be considered as a candidate for cultivation under rain-fed upland conditions in Kenya. Furthermore, the results revealed that even potentially high-yielding varieties may not attain their yield potential if the cultivation environment is unsuitable. Although we found that five upland varieties (Dular, IRAT109, NERICA 1, NERICA 4, and Yumenohatamochi) presented relatively higher grain yield under water-deficit conditions in all soil types, individual variety’s grain yield depended on the soil type. Their higher yield is attributable to certain root traits and their yield variations to an interactive effect between root development and soil type. Our results indicated that the varieties Dular, IRAT109, NERICA 1, NERICA 4, and Yumenohatamochi are suitable for cultivation under rain-fed upland conditions across the major rice-growing areas in Kenya and that soil type should be considered when selecting varieties for an area’s maximum productivity.
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Tariku, Sewagegne, and Tadesse Lakew. "PERFORMANCE OF UPLAND NERICA AND NON -NERICA RICE ENOTYPES IN MULTI-ENVIRONMENT YIELD TRIALS AS ANALYSED USING GGEBIPLOT MODEL." International Journal of Research -GRANTHAALAYAH 4, no. 3 (March 31, 2016): 146–58. http://dx.doi.org/10.29121/granthaalayah.v4.i3.2016.2796.
Повний текст джерелаАнотація:
Ten upland New Rice for Africa (NERICA) and three upland non-NERICA rice genotypes were evaluated at three locations of six environments in north western Ethiopia from 2009 to 2011 to identify stable and high yielding genotypes and mega environments. Randomized complete block design with three replications was used. GGE biplot methodology was used for graphically display of yield data. The combined analysis of variance revealed that environment (E) accounted for 32.2% of the total variation while G and GEI captured 20.3% and 21.1%, respectively. The first 2 principal components (PC1 and PC2) were used to create a 2-dimensional GGE biplot and explained 56.9 % and 20.6% of GGE sum of squares (SS), respectively. Genotypic PC1 scores >0 detected the adaptable and/or higher-yielding genotypes, while PC1 scores <0 discriminated the non-adaptable and/or lower-yielding ones. Unlike genotypic PC1 scores, near-zero PC2 scores identified stable genotypes, whereas absolute larger PC2 scores detected the unstable ones. On the other hand, environmental PC1 scores were related to non-crossover type GEIs and the PC2 scores to the crossover type. Among the tested genotypes 3, 2, 11, 13, 8 were found to be desirable in terms of higher yielding ability and stability in descending order. Based on GGEbiplot analysis, the test environments were classified in to three mega-environments. Mega -1 included environment WO-1 (Woreta) with genotype 9 as a winner; Mega-2 constituted environments such as WO-3 and WO-5 (Woreta) with genotype 2 as a winner and Mega-3 contained environments including PA-2,PA-6(Pawe) and ME-7(Metema) with genotype 8 as winner. However, it is not justifiable to consider two mega-environments within one specified area. So that mega environments 1 and 2 should be treated as one. The result of this study can be used as a driving force for the national rice breeding program to design breeding strategy that can address the request of different stakeholders for improved varieties. Among the tested genotypes in this study, three candidate genotypes (2, 3 and 8) were selected and verified considering their better performance. Of which, genotype 2 has been officially released for large scale production with the common name ‘’NERICA-12’’.
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Mansaray, Bashiru, Shaosheng Jin, and Godwin S. Agbemavor Horlu. "Do Land Ownership and Agro-Ecological Location of Farmland Influence Adoption of Improved Rice Varieties? Evidence from Sierra Leone." Agriculture 9, no. 12 (December 1, 2019): 256. http://dx.doi.org/10.3390/agriculture9120256.
Повний текст джерелаАнотація:
This study investigates the impact of farmland ownership and agro-ecological location on the adoption of the two most important sources of improved rice varieties (NERICA and ROK) in the context of Sierra Leone. In terms of farmland ownership, the results showed that farmers who cultivated their own land had a higher tendency of remaining as non-adopters of improved varieties, but those who rented farmland or were engaged in sharecropping had higher adoption rates of improved rice varieties. Also, the location of farmland (uplands or inland valley swamps) determined the rates of adoption of improved varieties differently. For instance, upland regions showed faster adoption of ROK varieties, but inland valley areas showed faster adoption of NERICA varieties. We also examined the survival rates of local rice varieties. The adoption of improved varieties was only occurring at a very low rate, and the farmers’ adoption of ROK varieties was swifter than for NERICA varieties. This study recommends that policies advocating the adoption of improved rice varieties in Sierra Leone must take into consideration the patterns of farmland ownership and location.
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Olagunju, Solomon O., Muftau O. Atayese, Olalekan S. Sakariyawo, and Enoch O. Dare. "Effects of multi-growth stage water deficit and orthosilicic acid fertiliser on lodging resistance of rice cultivars." Crop & Pasture Science 73, no. 4 (February 28, 2022): 370–89. http://dx.doi.org/10.1071/cp21563.
Повний текст джерелаАнотація:
Lodging and water deficit (WD) are both yield limiting factors for rice production in Africa. A number of New Rice for Africa (NERICA) cultivars with drought adaptive and high yielding ability have been released but the extent of their lodging susceptibility due to water deficit is unclear. Application of orthosilicic acid (OSA) fertiliser can reduce lodging due to water deficit. An experiment was therefore conducted involving six cultivars (NERICAs 1, 4, 6, 7, 8 and Moroberekan), subjected to five multi-growth stage WD treatments: non-stressed (Nst), 10-day stress at each of any two stages of vegetative (Veg), reproductive (Rep) and grain filling (Grain) stages viz (Veg10 + Rep10), (Veg10 + Grain10), (Rep10 + Grain10), and 7-day stress at each stage (Veg7 + Rep7 + Grain7) and with/without 500 mL ha−1 of OSA fertiliser. Lodging traits (LTs) such as lumen diameter, bending moment, panicle weight (PW) and grain yield (GY) were increased by OSA fertiliser. Under Veg7 + Rep7 + Grain7 stress, OSA fertiliser increased rice vigour through increases in internode length, lumen diameters and cross-section modulus by 7%, 18% and 18%, respectively, while under Veg10 + Rep10 stress, culm wall thickness was increased by 20%. Veg10 + Rep10 stress caused the most significant reduction in all LTs but with lowest lodging index (LI, 0.32) attributed to reduced PW and GY. Among the cultivars, Moroberekan combined higher GY with average LI (0.40) across the stress conditions while NERICA 1 had the lowest LI (0.34) attributed mainly to its short height. Although water deficit caused a reduction in lodging resistant traits, resistance to lodging under Veg10 + Rep10 and Veg7 + Rep7 + Grain7 stresses can be enhanced with OSA fertiliser.
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Kostylev, P. I., E. V. Krasnova, and A. V. Aksenov. "Characteristics of the Ugandan rice varieties grown in the Rostov region." Grain Economy of Russia 1, no. 2 (May 2, 2021): 45–51. http://dx.doi.org/10.31367/2079-8725-2021-74-2-45-51.
Повний текст джерелаАнотація:
Rice is a valuable agricultural crop that is used as food for more than half of the world's population. The development of highly productive varieties and hybrids with high product quality assumes the utilization of new initial material from different countries in the breeding process. The purpose of the current research was to conduct an ecological testing of the rice varieties from Uganda in the Proletarsky district of the Rostov region in Russia and use them in the breeding process. There were studied the Ugandan rice samples ‘Nerica 1’, ‘Nerica 4’, ‘Komboka’, ‘Wita 9’, ‘Namche 1’, ‘Namche 2’, ‘Namche 3’, ‘Namche 4’, ‘Namche 5’, ‘Namche 6’ (NaCRRI) in comparison with the Russian variety ‘Komandor’ (FSBSI “ARC “Donskoy”). The study of the Ugandan rice varieties according to a number of economically valuable traits and biological properties showed that the vegetation period from soil flooding to rice maturing took 100–113 days, the standard variety ‘Komandor’ needed 83 days. The varieties ‘Komboka’ and ‘Wita 9’ did not bear blossom. All samples had a short habit, with 63-95 cm of plant height. The long drooping panicles of 18.5–22.3 cm carried from 122 to 213 seeds. The caryopses were elongated, the length of the caryopses varied from 9.0 to 9.5 mm, and the width ranged from 2.7 to 3.1 mm. 1000 seed weight varied from 26 to 34 g, number of seeds per panicle ranged from 122 to 213 pieces. Genetic analysis of the second generation hybrids ‘Kontakt × Nerica 1’ and ‘Boyarin × Nerica 4’ showed different types of traits’ inheritance, from negative dominance (vegetation period) through the absence of dominance (caryopses size) to overdominance (plant height, seed weight per panicle and number of seeds per panicle).
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Marie-Noel, Melie Feyem, Bell Martin Joseph, Tanzi Liliane, Foncha Felix, Malaa Dorothy, and Djouffo Prince Salvador. "Effect of Plant Spacing on the Growth and Yield of Rainfed Rice (Oryza Sativa) in the Bimodal Rain Forest Zone of Cameroon." Journal of Agriculture and Crops, no. 72 (February 13, 2021): 48–59. http://dx.doi.org/10.32861/jac.72.48.59.
Повний текст джерелаАнотація:
A study was carried out on plant density at the experimental field of the Institute of Agricultural Research for Development (IRAD) Nkolbisson, Yaoundé to determine the appropriate spacing to improve rainfed rice production in the bimodal rainfall forest zone of Cameroon. The experiment was conducted during the main cropping seasons of 2017 and 2018. The planting spacing used were 15cm x 15cm, 20cm x 20cm, 25cm x 25cm and 30cm x 30cm giving the plant populations of 444444, 250000, 160,000 and 111,111 plants / ha respectively using two varieties (Nerica 3 and Nerica 8). The experiment was laid out in a randomized complete block design with three replications. Significant differences were observed in the growth and yield across the years. Treatments were highly significant concerning the number of days to the appearance of the first flower, the number of days to 50% flowering, and the number of days to 50 % maturity. Plants were taller with more tillers and gave higher yields in 2017 than those of 2018. The spacing significantly affected the plant height, number of tillers, and panicle length for both varieties. The interaction of spacing and variety was significant for the number of tillers per m2 and the number of seeds per panicle, however, it was not for the weight of 1000 grains and the percentage of full bales. The yield components determining yield increase were the number of panicles / m2 and the number of seeds/panicles. Nerica 3 variety gave higher yields compared to the Nerica 8, the closer the spacing, the higher the yield. There were a strong significance and positive correlation between yield, number of panicles, and the number of grain per panicle. The spacing that gives the highest number of panicle per m2 was 15 cm X 15 cm and this spacing gave good yield in the region where the study was carried out.
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Rana, Md Masud, Md Ashraful Islam, Shahin Imran, Silve Rubani, and Lutful Hassan. "Morphological characterization of NERICA mutant lines and their parents." Asian Journal of Medical and Biological Research 4, no. 2 (September 30, 2018): 207–21. http://dx.doi.org/10.3329/ajmbr.v4i2.38257.
Повний текст джерелаАнотація:
A total of 10 NERICA lines (7 mutants along with 3 parents) of advanced generations were used for morphological and molecular characterization. The experiments were conducted in both Aus and Aman season, 2014 under different field conditions at the field of Biotechnology division, BINA, BAU Campus, Mymensingh-2202 following Randomized Complete Block Design (RCBD) with three replications. The genotypes differed significantly for all the traits. The seasonal differences on all the traits except 100-seed weight were also highly significant. The season’s × genotypes interactions were highly significant. The mean value of days to maturity was the lowest in Aman season than Aus season and the mean yield of rice lines was the highest in Aman season than Aus season. The phenotypic co-efficient of variations (PCV) were higher than genotypic co-efficient of variations (GCV) for all the traits studied indicating that they all interacted with the environment to some extent. All the traits studied expressed moderate to high heritability estimates ranging from 53.70 to 99.54%. High heritability along with high genetic advance was noticed for the traits, number of filled grain panicle-1, number of unfilled grain panicle-1 and plant height. Significant positive correlations were recorded for yield plot-1 with effective tillers hill-1 and panicle length and significant negative correlations were recorded for yield plot-1 with days to maturity and unfilled grains panicle-1. Plant height, total tillers hill-1, effective tillers hill-1, panicle length, filled grains panicle-1 and 100-seed weight showed direct positive effect on yield plot-1 at both genotypic and phenotypic level. Therefore, these characters would be reliable criteria for improving yield.Asian J. Med. Biol. Res. June 2018, 4(2): 207-221
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O.M., Apata,, A. Awoyemi, and A. A. Babayemi. "Impact Assessment of Nerica Rice Production in Southwestern Nigeria." Universal Journal of Agricultural Research 4, no. 1 (February 2016): 1–4. http://dx.doi.org/10.13189/ujar.2016.040101.
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Wopereis, M. C. S., A. Diagne, J. Rodenburg, M. Sié, and E. A. Somado. "Why NERICA is a Successful Innovation for African Farmers." Outlook on Agriculture 37, no. 3 (September 2008): 169–76. http://dx.doi.org/10.5367/000000008785915502.
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KIJIMA, Yoko, Dick SSERUNKUUMA, and Keijiro OTSUKA. "HOW REVOLUTIONARY IS THE “NERICA REVOLUTION”? EVIDENCE FROM UGANDA." Developing Economies 44, no. 2 (May 17, 2006): 252–67. http://dx.doi.org/10.1111/j.1746-1049.2006.00016.x.
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Legesse, Sintayehu, Solomon Worku, and Geremew Bultosa. "Effect of rice variety and blending proportion on the proximate compositions, minerals and phytic acid contents of bread from rice-teff blend." F1000Research 4 (May 13, 2015): 116. http://dx.doi.org/10.12688/f1000research.6201.1.
Повний текст джерелаАнотація:
Development of bakery products containing rice (Oryza sativa, Linn.) and teff (Eragrostis tef) could have potential health benefits due to their gluten free nature. Nine experimental runs were generated using custom design by JMP 8 software. The effect of two factors, rice variety (Edeget, X-jigna and Nerica-4) and blending proportions of rice and teff (0.5:0.5, 0.7:0.3 and 0.9:0.1) were studied. The data analysis was conducted using SAS software package for the mean comparison and custom design by JMP 8 software. Response surface methodology was applied to study the interaction effect of the main factors and to generate the predictive equations. An optimal value (1.60%) of fiber was obtained when the proportion of the blend was 50% Edeget and 50% teff because teff grain is high in fiber. A maximum value (10.75%) of protein was obtained when the proportion of the blend was 70% Nerica-4 and 30% teff. Carbohydrate was optimal (81.37%) when 90% Edeget and 10% teff were blended because rice grain is high in carbohydrate. Optimal iron content (12.97 mg/100g) was obtained when the proportion of the blend was 50% Nerica-4 and 50% teff because teff grain is high in iron. Optimal zinc content (4.14 mg/100g) was obtained when the proportion of the blend was 50% X-jigna and 50% teff. The optimal value (61.25 mg/100g) of calcium was obtained when the proportion of the blend was 50% Edeget and 50% teff. Optimum (lower) value (0.31mg/g) of phytic acid was obtained when the proportion of the blend was 90% Nerica-4 and 10% teff because rice grain is lower in phytic acid content. It was concluded that rice variety and rice-teff blending proportion had a significant effect on the physico-chemical properties of rice-teff blend bread. An optimal nutrient blend (high in nutrients, low in anti-nutrients) was obtained when 70% Edeget rice variety was blended with 30% teff. All the derived mathematical models for the various responses were found to fit significantly to the predicted data.
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Bekere, Workneh. "Growth Pattern and Yield of NERICA 1 and NERICA 4 Rice Varieties as a Function of Split Nitrogen Application at Tsukuba, East Japan." Agriculture, Forestry and Fisheries 3, no. 1 (2014): 24. http://dx.doi.org/10.11648/j.aff.20140301.15.
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Esang, Demben Moses, and Angus Onwudiwe Ikeh. "Response of Some Improved Upland Rice Varieties to Different Sources and Rates of Nitrogen Fertilizer in A Humid Rain Forest Region." American Journal of Agricultural Science, Engineering and Technology 5, no. 2 (September 4, 2021): 69–91. http://dx.doi.org/10.54536/ajaset.v5i2.75.
Повний текст джерелаАнотація:
ABSTRACT
Nitrogen (N) is a major lacking nutrient element for the growth and yield of cereal crops Calabar, it is necessary to determine the response different sources and rates of N in four varieties of upland rice. Treatments comprised factorial combinations of the four rice varieties (NERICA 1, NERICA 2, FARO 45, FARO 48), three straight inorganic N sources (urea, Calcium ammonium nitrate, ammonium sulphate) and four levels of N (0, 30, 60, 90 kg N ha-1) laid in randomized complete block design. The N was split applied twice; one-third at the beginning of tillering and the remainder at panicle initiation. The results showed that the source of fertilizer N did not affect significantly the growth and yield of the rice crop (p=0.05). Considering that soils in Calabar are acid sands it will not be advisable to consistently apply such acidifying fertilizers as ammonium sulphate or urea except with soil liming which will undoubtedly increase the cost of production and probably make it unprofitable to cultivate rice in the area. The fertilized crop grew taller and produced more biomass compared with the control. It also produced significantly more tillers hill-1, panicles m-2, grains panicle-1, weight of 1,000 grains and grain yield. However, whereas NERICA 1, NERICA 2 and FARO 45 were more responsive to lower N levels, the grain yield of FARO 48 was significantly higher when the crop received 90 kg N ha-1 compared with other varieties, probably because of its longer growth duration in the field. The responsiveness of these varieties to low N application was the result of their higher grain yield resulting from enhanced N use efficiency. Genotypes that were most responsive to low N input levels were early maturing with high N-use efficiencies. On the basis of grain yield, it is recommended that for high yield in the humid region of Cross River State, N should be applied at the rate of 60 kg ha-1 for early- and 90 kg ha-1 or above for the medium-maturing upland rice varieties.
Keywords: Rice, Varieties, Growth and Yield
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Chukwuka, Eze, Oluka Ikechukwu, and Eze Nkechi. "Functional properties of some varieties of new rice for Africa (NERICA) relevant to its processing." Journal on Processing and Energy in Agriculture 25, no. 3 (2021): 114–18. http://dx.doi.org/10.5937/jpea25-34640.
Повний текст джерелаАнотація:
Flour from rice can be applicable to several types of food or be used directly as a food substitute, and this can have an impact on the final quality of the product. This aimed to determine the functional properties of some selected NERICA varieties, namely, FARO 44, FARO 52, FARO 57, FARO 60 and FARO 61. Results obtained showed that the functional properties, such as the water absorption capacity (WAC), swelling power, water solubility index (WSI), bulk density, oil absorption capacity (OAC), and the foaming capacity, ranged from 251.74 to 298.51 (%); 7.42 to 8.41 (g/g); 10.01 to 12.27 (%); 0.92 to 1.00 (%); 0.45 to 1.36 (%); and 7.29 to 11.76 (%) respectively. All recorded samples were significantly different (p < 0.05). FARO 61 recorded the highest point of 298.51 (%), and 1.36 (%), in WAC and OAC respectively. While FARO 57 recorded the highest swelling power of 8.41 (g/g). These determined results of the functional properties of NERICA flour samples will be useful in determining their suitability in food and other relevant industries because the flour samples showed a high-quality range of functional properties that make them favourable for such activities.
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Megnidio-Tchoukouegno, Mireille Merlise, Evariste Bosco Gueguim Kana, and Wonroo B. A. Bancole. "Machine learning model to predict endophytic colonisation of rice cultivar plant tissues by Beauveria bassiana isolates and their potential as bio-control agents against rice stem borer using existing knowledge." F1000Research 11 (November 3, 2022): 1249. http://dx.doi.org/10.12688/f1000research.126479.1.
Повний текст джерелаАнотація:
Background: Finding well-known Beauveria bassiana isolates that could preserve rice crops from Sesamia calamistis (stem borer) is problematic. Another difficult task is the development of precise inoculation methods, which have been employed for their establishment as endophytes in cereal crops. This study proposed machine learning models to predict the best entomopathogenic fungi, Beauveria bassiana that could directly protect rice crops against Sesamia calamistis. Methods: Data driven machine learning decisions were implemented and assessed from 60 experimental runs with nine different feature/input variables and three target/output variables following foliar spray and seed treatment inoculation method. The feature variables consisted of rice plant tissue, such as Nerica-L19, Nerica1, Nerica8, the time, and the five promising isolates Beauveria bassiana (Bb3, Bb4, Bb10, Bb21, Bb35). The target variable consisted of the number of colonised roots, stems and leaves, expressed as a percentage depending on the degree of protection after each inoculation. A data driven decision by the extreme gradient boosting regression algorithm was used to proficiently abstract the situation where there is no direct relationship between features and target variables. Results: The foliar spray inoculation method exhibited high coefficient of determination (R2) of 0.99, 0.98 and 0.94 depending on the number of colonised stems, roots and leaves, respectively, while the seed treatment approach exhibited the coefficient of determination (R2) of 0.91, 0.87 and 0.75, respectively. Conclusions: These results demonstrated that the Extreme Gradient Boosting algorithm effectively abstracted the nonlinear relationship between the attribute variables that were taken into consideration and predicted Beauveria bassiana as a bio-pesticide for rice and perhaps other cereal stem borers. Thus, this XGBoost regression model could be used to navigate the optimization domain and reduce the development time of the biocontrol process.
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Zacharie, Segda, P. Yameogo Louis, Sie Moussa, B. Bado Vincent, and Mando A. "Nitrogen use efficiency by selected NERICA varieties in Burkina Faso." African Journal of Agricultural Research 9, no. 15 (April 10, 2014): 1172–79. http://dx.doi.org/10.5897/ajar2013.8383.
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A. Sanni, K., D. K. . Ojo, M. A. Adebisi, E. A. Somado, O. J. Ariyo, M. Sie, I. Akintayo, et al. "Ratooning Potential of Interspecific NERICA Rice Varieties (Oryza glaberrimaxOryza sativa)." International Journal of Botany 5, no. 1 (December 15, 2008): 112–15. http://dx.doi.org/10.3923/ijb.2009.112.115.
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Koide, Yohei, Juan Pariasca Tanaka, Terry Rose, Ayumi Fukuo, Kunihiko Konisho, Seiji Yanagihara, Yoshimichi Fukuta, and Matthias Wissuwa. "QTLs for phosphorus deficiency tolerance detected in upland NERICA varieties." Plant Breeding 132, no. 3 (April 19, 2013): 259–65. http://dx.doi.org/10.1111/pbr.12052.
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DIAGNE, Aliou. "DIFFUSION AND ADOPTION OF NERICA RICE VARIETIES IN CÔTE D’IVOIRE." Developing Economies 44, no. 2 (May 17, 2006): 208–31. http://dx.doi.org/10.1111/j.1746-1049.2006.00014.x.
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Legesse, Sintayehu. "Physical properties and chemical composition of three Ethiopian rice (Oryza sativa Linn.) varieties compared to tef [Eragrostis tef (Zucc.) Trotter] grain." North African Journal of Food and Nutrition Research 3, no. 6 (August 12, 2019): 180–85. http://dx.doi.org/10.51745/najfnr.3.6.180-185.
Повний текст джерелаАнотація:
Background: It is really crucial to explore physical properties and chemical composition of the locally cultivated cereal crops to enhance their utilization in various recipes. Moreover, that will fill knowledge gaps in this field and provides advantages for both; producers and consumers who still believe that imported cereals are superior to the locals. Aims: This study was intended to investigate the physical properties and chemical composition of the three rice varieties (Edeget, Nerica-4, and X-jigna) in comparison to brown tef which are grown in Ethiopia. The evaluation included determination of thousand kernel weight (TKW), hectoliter weight (HLW), moisture, ash, crude fiber, crude fat, crude protein, carbohydrate, Fe, Zn, Ca, and phytic acid contents. Data Analysis: The data analysis was conducted using SPSS Version-22. Duncan’s multiple range test was used for the mean comparison at p<0.05. Results: The results revealed that the rice cultivar Edeget showed a higher TKW (39.20 g) than other varieties while brown tef had a TKW of 0.36 g. X-jigna displayed a higher HLW (63.70 kg/hL) than other varieties while the brown tef had 84.48 kg/hL. The ash, crude fiber and fat contents of the brown tef were higher than all the three rice varieties. Nerica-4 had better protein content (9.61%) than other rice varieties and brown tef had a protein content of 9.58%. The iron content of the three rice varieties was virtually null while the brown tef had shown a higher iron content (17.18 mg/100g). Nerica-4 had shown a higher zinc content (3.62 mg/100g) while the brown tef had got higher calcium (91.90 mg/100g) and phytic acid (5 mg/g). Conclusions: The study revealed that the physical properties of the three rice varieties were significantly different regardless of the environmental influences. Keywords: Physical properties, chemical composition, varieties, rice, tef.
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Awala, Simon K., Kudakwashe Hove, Vistorina Shivute, Johanna S. Valombola, Pamwenafye I. Nanhapo, Yoshihiro Hirooka, Osmund D. Mwandemele, and Morio Iijima. "Growth and Productivity Assessment of Short-Duration Rice (Oryza sativa L. and Upland NERICA) Genotypes in Semiarid North-Central Namibia." Advances in Agriculture 2021 (February 28, 2021): 1–10. http://dx.doi.org/10.1155/2021/6676081.
Повний текст джерелаАнотація:
In semiarid regions, drought is the major threat to crop production, but climate change and variability often bring floods to the regions, forming seasonal wetlands causing damage to local, drought-adapted staple grains and, hence, low yields and food deficit. Introduction of the semiaquatic crop rice (Oryza spp.) to these semiarid wetlands could complement the dryland crop low yields and overcome the food shortage problem. A field experiment was carried out at the University of Namibia-Ogongo Campus during the 2016/2017 and 2017/2018 cropping seasons to assess the growth and yield of rice genotypes. Twelve short-duration rice genotypes, nine from the International Rice Research Institute (IRRI) and three locally grown upland NERICA genotypes, were used. Parametric analysis of variance was performed to test their effects on crop growth and yield characters. The results showed significant genotype by year interaction for days to heading, plant height, the number of tillers per m2, shoot biomass, the number of panicles per m2, 1000-grain weight, harvest index, and grain yield. The IRRI genotypes produced a higher number of tillers, shoot biomass, and grain yield than the NERICA ones, which were early maturing, were taller, and had higher 1000-grain weight across the years. Generally, most of the genotypes had lower grain yield and higher shoot biomass in the first year, due to the prevailing cool, rainy, and seemingly cloudy weather conditions associated with lower temperature and lower solar radiation. Grain yield was positively correlated with most characters but negatively correlated with the 1000-grain weight. These results demonstrate the yield superiority of IRRI genotypes over their early-maturing NERICA counterparts. However, further studies on morphological characters and drought tolerance of the IRRI genotypes are warranted to ascertain production sustainability under semiarid environments.