Articles de revues : « Seed Science and Technology »

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Groot, Steven P. C. « Seed Science and Technology. Volume 48 Issue 1 (2020) ». Seed Science and Technology 48, n^o 1 (30 avril 2020) : 133–42. http://dx.doi.org/10.15258/sst.2020.48.1.14.

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This issue of Seed Science and Technology contains a number of interesting papers worth giving additional attention. There are five papers that deal with analysis and breaking of seed dormancy, an important issue, not only for commercial practice and breeding, but also for regeneration of habitats and safeguarding bio- diversity. One paper in this issue describes how mucilage production by seeds can aid in overcoming drought stress during germination of seeds from a desert plant. Combatting seed borne diseases remains an important issue. One paper describes how treatment with a combination of two fungicides proved to be effective against seed transmitted seedling blight in Norway spruce. Another paper demonstrates a method to combat a seed- transmitted bacterial infection with watermelon in the seedling stage. Seed vigour tests are needed to give a better estimation of differences between seed lots regarding field emergence. A faster vigour test for tobacco seeds is proposed in a paper in this issue. Even traditional ISTA germination tests may be improved, as demonstrated in a paper for spinach seeds, where especially large seeds can be sensitive to a high moisture level in the tests. Instruments initially used in high-technology industries or in medical care sometimes find their way to seed science applications. An example described in this issue is the use of 3D X-ray computed tomography, which enables rapid non-destructive analyses of the morphology of individual seeds, which can be correlated with germination behaviour. Another paper is on the use of multispectral imaging for seed purity analysis with alfalfa seed lots.

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Hamman, Brigitte. « Seed Science and Technology. Volume 51 Issue 2 (2023) ». Seed Science and Technology 51, n^o 2 (31 août 2023) : 287–90. http://dx.doi.org/10.15258/sst.2023.51.2.12.

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Seed-enhancement treatments as a theme run through many of the papers in the second issue of volume 51 of Seed Science and Technology: the uses of priming are explored in two papers, one of which compares agents with the potential to improve chilling tolerance of tobacco seed during germination, and the other suggests Pseudomonas fluorescens and Bacillus amyloliquefaciens as forms of biocontrol against Bacterial Fruit Blotch when priming melon seeds. Dormancy-breaking is essential for many species, and two papers proffer suggestions that can be applied to seeds of cucumber (dry heat) and to kala zeera (chilling, phytohormones). A lesser- utilised seed enhancement, that of plasma pre-treatments, is explored in terms of promoting seedling growth and development when applied to seeds of a popular horticultural species, Platycodon grandiflorus. Cautionary notes when following approved seed testing methods are sounded in a finding that the impact of variety complicates the interpretation of results when using the radicle emergence test to evaluate seed quality of wheat, and in a report of the results of a capacity-building exercise, where the correlation between skill levels and successful propagation of Melia volkensii seeds was evident. Useful SSR markers for assessing genetic similarity and degree of purity of wheat cultivars grown in Romania are suggested, as too is an approach to using germination and/or viability data in order to allow seed banks to make data-informed management decisions that would ensure time and resources are effectively allocated. An invited review gives a thorough and comprehensive review of all matters relating to the determination and control of seed moisture, and includes discussions on water activity and working with seed that needs to be at high moisture contents. A book review of ”Plant Regeneration from Seeds: A Global Warming Perspective ”strikes a positive note, concluding that it will leave readers with ”a deep appreciation for the complex interplay of factors that influence plant regeneration and the potential consequences for ecosystems around the world ”.

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Tay*, David. « Seed Technology in Plant Germplasm Conservation ». HortScience 39, n^o 4 (juillet 2004) : 753B—753. http://dx.doi.org/10.21273/hortsci.39.4.753b.

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In plant germplasm conservation, “orthodox” seed (i.e. seed that survives drying down to low moisture content) is the most suitable propagule for long-term storage. In general, high quality seeds of around 5% seed moisture content can be stored for 5-15 years at 2°C and 15-50 years at -18°C. Globally, there are some 1,300 genebanks and 6.1 million accessions of food and industrial crops in conservation. When collecting and conserving plant germplasm, seed science and technology have to be applied during germplasm collection; seed regeneration-germination, seedling establishment, flower synchronization, pollination, harvesting, drying, processing and packaging; seed storage and conservation; characterization and evaluation; and finally, distribution. Some of the seed science knowledge and technology skills encompass seed sampling strategy, sample size, seed health, germination and vigor testing, dormancy breaking, scarification, stratification, vernalization, photoperiod treatment, isolation and pollination techniques, harvesting, threshing, drying, hermetic packaging, storage facility design, etc. The goal is to produce seed lots that fulfill the required genetic, physical, physiological and health quality. A summary was presented to relate germplasm conservation activities to seed science and technology. Some of the seed production, processing and testing equipment used were highlighted. Seed research in germplasm conservation is therefore crucial to streamline the operation and management of a genebank to make it more cost effective and attractive for funding.

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McKersie, Bryan D. « Principles of seed science and technology ». Plant Science 162, n^o 5 (mai 2002) : 849. http://dx.doi.org/10.1016/s0168-9452(02)00011-0.

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Cantliffe, Daniel J. « Handbook of Seed Science and Technology ». HortScience 42, n^o 2 (avril 2007) : 422a. http://dx.doi.org/10.21273/hortsci.42.2.422a.

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Schmid, Rudolf, et Amarjit S. Basra. « Handbook of Seed Science and Technology ». Taxon 55, n^o 4 (1 novembre 2006) : 1071. http://dx.doi.org/10.2307/25065722.

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Hernández Cortés, José Antonio. « Seed Science Research : Global Trends in Seed Biology and Technology ». Seeds 1, n^o 1 (9 octobre 2021) : 1–4. http://dx.doi.org/10.3390/seeds1010001.

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Taylor, Alan G., Masoume Amirkhani et Hank Hill. « Modern Seed Technology ». Agriculture 11, n^o 7 (6 juillet 2021) : 630. http://dx.doi.org/10.3390/agriculture11070630.

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Marcos-Filho, Julio. « Seed Science and Technology. Volume 48 Issue 3 (2020) ». Seed Science and Technology 48, n^o 3 (31 décembre 2020) : 439–51. http://dx.doi.org/10.15258/sst.2020.48.3.12.

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The quality of a seed lot results from the interaction of attributes that determine its overall value for a specific purpose. Seed Science and Technology is a widely recognised journal first published in 1973 as a continuation of the Proceedings of the International Seed Testing Association (1921 to 1972). The Journal publishes original papers and articles comprising different aspects of seed production, processing, storage, testing, genetic conservation, habitat regeneration and reforestation programs, with both basic and applied topics on seed science. Seed quality represents a permanent focus of Seed Science and Technology and the articles published in this issue, with a predominant approach on physiological potential, genetic purity and seed enhancement, confirm this strong commitment The species covered by the articles in this issue represent important worldwide grain, forage and ornamental crops, but there are also species with local value, for environmental restoration and medicinal application.

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Baalbaki, Riad. « Seed Science and Technology. Volume 49 Issue 3 (2021) ». Seed Science and Technology 49, n^o 3 (31 décembre 2021) : 321–30. http://dx.doi.org/10.15258/sst.2021.49.3.11.

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This issue of Seed Science and Technology is a good reflection of the wide scope of the field of study. Species of interest include major cultivated crops as well as wild and native species. Likewise, research topics span a wide array of subjects relevant to those interested in basic seed biology, production, testing, ecology, conservation and biodiversity. Understanding basic mechanisms of seed dormancy and germination remains a major topic of interest. Seed quality and its attributes are also of particular interest, as evidenced by research articles on seed vigour, health, genetic purity and physical characterisation.

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Shamsul Huda, Muhammad, Mohammad Rafiqul Islam, Abdul Hannan, Shafiqul Islam et Sheikh Md Mobarak Hossain. « SEED QUALITY ASSESSMENT OF FARMER’S PRODUCED SEED POTATO ». Plant Physiology and Soil Chemistry 1, n^o 2 (13 septembre 2021) : 41–44. http://dx.doi.org/10.26480/ppsc.02.2021.41.44.

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The experiment was conducted at the research field and post graduate laboratory of Plant Pathology Department, Hajee Mohammad Danesh Science and Technology University, Dinajpur, during 2015 – 2016 to find out suitable method of farm saved seed potato production by the farmers. Farm saved seed was compared with certified seed, positive selection seed, seed plot technique’s seed and TLS seeds potato in the experiment. The maximum yield (27.72 ton/ha) was recorded from Positive Selection’s Seeds which was similar with Certified and Seeds of SPT. But the maximum plants (≥ 8 %, 7.33 % and 4.17 %) were infected by PVY, PLRV and PMV respectively in Farmer’s seed. The seed potatoes of positive selection and seed plot technique are the best alternate to supplement the certified seed.

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Luo, Man. « Preliminary Research on Intelligent Baking Room Dehydration and Drying Technology for Rice Sterile Seeds ». Advances in Multimedia 2022 (12 juillet 2022) : 1–10. http://dx.doi.org/10.1155/2022/9622688.

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The quality of rice seed is very important for rice production. In the process of rice seed production, seed drying is an important link in the whole process of seed quality control, and the problems in mechanical drying are important factors affecting the quality of rice seed. It is easy to encounter rain weather when the sterile seeds are dried by natural air, which seriously affects the seed vigor. High-quality rice seed is an important guarantee to achieve high yield of rice, and seed germination rate is one of the factors directly affecting rice yield. The drying process has the greatest effect on the quality and germination rate of sterile rice seeds. Selecting reasonable drying technology is an important means to ensure the germination rate of sterile rice seeds. In this paper, the dewatering and drying technology of rice sterile line seeds in intelligent baking room was studied. An adaptive integral sliding mode control algorithm based on Smith prediction was proposed for intelligent baking room temperature. The lag in the system was compensated by Smith prediction; the uncertainty of the system model and the complex interference under variable operating conditions were overcome by the robustness of sliding mode control. And the chattering of the sliding mode was eliminated by the adaptive integral sliding mode surface. The seeds of three rice varieties were dried, the drying dehydration rate, seed germination rate, and seed vigor were measured, and the changes of seed moisture and temperature during drying were observed. The results showed that there was little difference in the seed vigor after drying and air dried, which proved that the dryer could be used to dry different kinds of male sterile seeds. Compared with air dried seeds, the germination rate and germination potential of all mechanically dried seeds have little difference, and the overall difference of germination index and vitality index is also small. This study solved the problem that the seeds of male sterile lines could not be dehydrated and dried in time of rainy weather, which is of great significance to improve seed quality and economic benefits.

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Shinde, Pavan, S. R. Doddagoudar et S. N. Vasudevan. « Effect of seed polymer coating with micronutrients and foliar spray on seed quality parameters of resultant seed in chickpea (Cicer arietinum L.) ». Journal of Applied and Natural Science 8, n^o 3 (1 septembre 2016) : 1623–28. http://dx.doi.org/10.31018/jans.v8i3.1012.

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A laboratory experiment was carried out in the Department of Seed Science and Technology, College of Agriculture, University of Agricultural Sciences, Raichur to study the effect of seed polymer coating with micronutrients and foliar spray on the resultant seed quality parameters of chickpea. Among the seventeen different treatments, resultant chickpea seeds obtained from treatment polymer coated seeds (each@ 6 ml/kg of seed) along with the combination of micronutrients viz.,ZnSO4 + Boron + Ammonium molybdate + FeSO4 ( each @ 2 g/kg of seed ) and two foliar sprays (0.5 % + 0.2 % + 0.1% + 0.5 %, respectively, except ZnSO4 and FeSO4 in EDTA form) at an interval of 10 days during flowering stage (50 and 60 days after sowing) recorded significantly highest hundred seed weight (25.9 g), germination (97.00 %), speed of germination (18.50), shoot length (8.43 cm), root length (19.80 cm), seedling dry weight (43.30 mg) and seedling vigour index (2738) compared to all other treatments and control (23.6 g, 92.05 %, 13.74, 5.48 cm, 16.30 cm, 34.00 mg and 2004, respectively) and hence above treatment combinations can be used in order to produce good quality seeds.

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Sarwadana, S. M., B. R. T. Putri et K. K. Dinata. « PENGEMBANGAN USAHA BENIH JAGUNG TAHAN KERING ». Buletin Udayana Mengabdi 17, n^o 1 (1 janvier 2018) : 70. http://dx.doi.org/10.24843/bum.2018.v17.i01.p12.

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Activities of science and technology for innovation and creativity campus aims are: (1) thecommercialization of science and technology campus creativity as a source of financing for the developmentof institutions; (2) stimulate the entrepreneurial spirit among beings campus, and (3) help people get seeds ofdrought-tolerant maize varieties. Methods of execution include the business aspects of the planned businessactivities consist of: provision of raw materials, production processes, management, marketing, humanresources, facilities, and financial. The raw material is obtained from units of science and technology fornovation and creativity campus and through partnerships with farmers' seed corn. The production processstarted from seed, sorting, and packaging. Marketing is done directly, partnerships with local governmentsand konsiniasi with kiosk / farm shop. Results show that the activities of science and technology unit forinnovation and creativity campus drought-tolerant maize seed has gone well characterized by supportinfrastructure adequate maize seed production; IbIKK unit operates under the management of PSAgroecotechnology Faculty of Agriculture, University of Udayana; Of investment made in 2014 amountingto Rp. 39,550,000; Result of sales corn seeds turnover in 2014 amounted to 400 kg (Rp. 12 million); and netcash flow amounted to 17,672,400.

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R, VIMALA, PONNUSAMY A S et THIAGARAJAN K. « Standardisation of seed processing methods for hybrid rice ». Madras Agricultural Journal 88, December (2001) : 632–35. http://dx.doi.org/10.29321/maj.10.a00390.

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Standardisation of seed processing methods for hybrid rice was carried out at Department of Seed Science and Technology, TNAU Coimbatore. Considering, the high seed recovery and seed quality, 1.7 mm sieve can be used for size grading of TNRH-16 and TNRH-17 rice hybrids and 1.6 mm sieve for CORH-1 hybrid. Specific gravity separation of size graded seeds into four density grades showed the superiority of heavy, medium and light seeds over very light seeds in terms of seed quality parameters. Among the hybrids, CORH-1 showed its superiority in respect to seed quality over TNRH-16 and TNRH-17.

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Dasanal, Kiran, R. Siddaraju, P. Venkappa, C. Manjanaik et K. Madhusudan. « Influence of Solarization on Seed Quality of Bruchid Infested and Fresh Cowpea (Vigna unguiculata (L.) Walp.) Seeds during Storage. » Journal of Experimental Agriculture International 46, n^o 3 (17 février 2024) : 35–40. http://dx.doi.org/10.9734/jeai/2024/v46i32323.

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During July 2018 and April 2019, the laboratory study was conducted at the Department of Seed Science and Technology and National Seed Project, University of Agricultural Sciences, Bengaluru, to investigate the influence of solarization on the seed quality of both bruchid-infested and fresh cowpea seeds (cv. IT38956-1). The findings indicated that subjecting fresh seeds to solarization in clear polyethylene packets (700 gauge) for 3 hours daily over 6 days resulted in the lowest seed moisture content (11.03%), highest germination rate (70.67%), longest mean seedling length (21.80 cm), highest mean seedling dry weight (46.10 mg), enhanced seedling vigour indices I and II (1541 and 3258), improved field emergence (68.33%), elevated TDH activity (1.43), higher protein content (19.73%), and reduced electrical conductivity of leachate (927 µS cm-1) after nine months of storage, compared to the control.

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Rika, Mudar, Sri Wina Oktavia, Riska Fitriani et Muhammad Ahmad Javed. « SEED GERMINATION TEST TECHNOLOGY PRACTICUM (STANDARD DEVELOPMENT TEST) ». Jurnal Ilmiah Ilmu Terapan Universitas Jambi 7, n^o 2 (25 décembre 2023) : 184–88. http://dx.doi.org/10.22437/jiituj.v7i2.29761.

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The aim of this practicum is to determine the percentage of seed germination, and to determine the germination capacity of the seed. The tools used in this practicum were a germonator, tweezers, clear plastic, and writing tools and the materials used in this practicum were substrate paper, 25 soybean seeds and 25 corn seeds. The results obtained were: On observations on the first day, it was seen that the germination value of both soybean seeds (Glycine max L) and corn seeds (Zea mays) had not changed because the time needed for the seeds to germinate had not been sufficient. In the 2nd observation, there were changes in soybean seeds (Glycine max L) and in the 3rd observation, there were changes in soybeans (Glycine max L).

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Moss, Wesley M., Andrew L. Guzzomi, Kevin J. Foster, Megan H. Ryan et Phillip G. H. Nichols. « Harvesting subterranean clover seed – current practices, technology and issues ». Crop and Pasture Science 72, n^o 3 (2021) : 223. http://dx.doi.org/10.1071/cp20269.

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Subterranean clover (Trifolium subterraneum L.) is Australia’s most widely sown annual pasture legume. Its widespread use as a pasture plant requires a well-functioning seed production industry, and Australia is the only significant producer of subterranean clover seed globally. However, the sustainability of this industry is under threat due to its reliance on ageing harvest equipment and the resultant environmental impacts. In order to evaluate seed harvesting practices, technology, and issues, we report on case studies, workshops, and a survey of seed producers across southern Australia. The Horwood Bagshaw Clover Harvester, designed in the 1950s, remains the most popular subterranean clover seed harvester. We discuss its use and modifications, and document several contemporary issues facing the seed production industry. Issues are primarily soil erosion and degradation; the expensive, slow and labour-intensive harvest process; and poor reliability and maintainability of harvesters that are now at least 30 years old. We conclude the root cause of these issues is the suction harvest technology utilised by the Horwood Bagshaw Clover Harvester. Analysis of the current harvest system is provided to support the development of new approaches to harvest subterranean clover seeds.

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O‘G‘Li, Ungarov Azizbek Abdumo‘Min, Xudayberdiev Rustamjon Xasanovich et Yuldasheva Dilorom Xusniddin Qizi. « ANALYSIS OF EFFECTIVE SEED LINTER TECHNOLOGY IN COTTON GINNING ENTERPRISES ». American Journal Of Agriculture And Horticulture Innovations 4, n^o 4 (1 avril 2024) : 12–15. http://dx.doi.org/10.37547/ajahi/volume04issue04-03.

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In our republic, special attention is being paid to the introduction of modern resource-saving techniques and technologies for high-quality production of fiber and cotton products. This article talks about science-based modern techniques and technologies that improve the quality of seed and fluff.

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Anuroopa, P., B. Pushpavathi, P. Sujatha et S. Hari Kishan. « Factors Influencing the Deterioration of Groundnut Seed Health and Its Implications on Storage Capacity ». International Journal of Environment and Climate Change 13, n^o 11 (2 novembre 2023) : 2093–100. http://dx.doi.org/10.9734/ijecc/2023/v13i113370.

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Aims: The current study aimed to investigate the factors influencing seed deterioration in groundnut. Study Design: Three factorial CRD. Place and Duration of Study: The research was conducted at the Department of Seed Science and Technology, Seed Research and Technology Centre, PJTSAU, Rajendranagar, Hyderabad, between february 2022 to march 2023. Methodology: Groundnut seeds harvested at different stages (early, normal, and late) were considered, each with varying seed moisture levels (8%, 10%, and 12%). These seeds were stored under ambient conditions for one year and evaluated for percentage of seed infection, seed rot, and bruchid infection. The assessments were carried out with three replicates, each consisting of 100 seeds. The study was conducted using a three-factorial design as the experimental setup involved three independent variables. Results: Results showed that among the different seed moisture levels, seeds harvested early with 8% moisture content exhibited the lowest percentages of seed infection, seed rot, and bruchid infection at 62.75% and 59.58% respectively after one year of storage. Conversely, seeds from the late harvesting window with 12% seed moisture content displayed the highest percentages of these seed health parameters at 53%, 00%, and 49.42% respectively. Notably, there was significant variation in seed infection rates observed in both 8% and 12% seed moisture content groups. Conclusion: These discoveries reveal the vital significance of timely harvesting and maintaining the right moisture levels to safeguard the quality and health of seeds.

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Wu, Weifeng, Ying Cheng, Keling Tu, Cuiling Ning, Chengmin Yang, Xuehui Dong, Hailu Cao et Qun Sun. « Study on the Selection of Processing Process and Parameters of Platycodon grandiflorum Seeds Assisted by Machine Vision Technology ». Agronomy 12, n^o 11 (6 novembre 2022) : 2764. http://dx.doi.org/10.3390/agronomy12112764.

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Seed processing is an important means of improving seed quality. However, the traditional seed processing process and parameter adjustment are highly empirically dependent. In this study, machine vision technology was used to develop a seed processing method based on the rapid extraction of seeds’ material characteristics. Combined with the results of clarity analysis and the single seed germination test, the seed processing process and parameters were determined through data analysis. The results showed that several phenotypic features were significantly or highly significantly correlated with clarity, but fewer phenotypic features were correlated with viability. According to the probability density distribution of pure seeds and impurities in the features that were significantly correlated with seed clarity, the sorting parameters of length, width, R, G, and B were determined. When the combination of width (≥0.8 mm) + G (<75) was used for sorting, the recall of pure seeds was higher than 91%, and the precision was increased to 98.6%. Combined with the specific production reality, the preliminary determination of the Platycodon grandiflorum seed processing process was air separation—screen (round hole sieve)—color sorting. Then, four commercialized Platycodon grandiflorum seed lots were sorted by this process using corresponding parameters in the actual processing equipment. Subsequently, the seed clarity and germination percentage were significantly improved, and the seed quality qualification rate was increased from 25% to 75%. In summary, by using machine vision technology to quickly extract the material characteristics of the seeds, combined with correlation analysis, probability density distribution plots, single feature selection, and combination sorting comparisons, the appropriate processing process and corresponding sorting parameters for a specific seed lot can be determined, thus maximizing the seed quality.

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Moravcova, L. « Basra, A.S. (ed.) : Handbook of Seed Science and Technology ». Biologia plantarum 51, n^o 3 (1 septembre 2007) : 466. http://dx.doi.org/10.1007/s10535-007-0097-6.

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Hay, Fiona R. « Seed Science and Technology. Volume 47 Issue 1 (2019) ». Seed Science and Technology 47, n^o 1 (1 avril 2019) : 113–19. http://dx.doi.org/10.15258/sst.2019.47.1.13.

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Hilhorst, Henk W. M. « Seed Science and Technology. Volume 48 Issue 2 (2020) ». Seed Science and Technology 48, n^o 2 (31 août 2020) : 315–23. http://dx.doi.org/10.15258/sst.2020.48.2.18.

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Seeds show incredible variation in their attributes, such as dormancy, longevity and, hence, quality. It is of eminent importance to study this variation across and within species and higher taxa in order to ensure successful agricultural production and preservation of biodiversity, not least in times of a changing climate.

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Jones, Edward D. « Progress in Seed Production Technology ». American Potato Journal 68, n^o 4 (avril 1991) : 247–48. http://dx.doi.org/10.1007/bf02853642.

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Zhang, Baofeng, Dan Liu, Xiaobo Xi, Yifu Zhang, Chao Chen, Jiwei Qu, Hao Dong et Ruihong Zhang. « The Analysis of the Applications of Crop Seed Tape Sowing Technology and Equipment : A Review ». Applied Sciences 11, n^o 23 (26 novembre 2021) : 11228. http://dx.doi.org/10.3390/app112311228.

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Seed tape sowing technology is a kind of crop cultivation technology based on a carrier. This technology first wraps crop seeds in a kind of carrier materials and makes them into seed tape. The seed tape is then laid down in farmland with special equipment. Seed tape planting has the advantages of accurate control of hill spacing, simplification of field sowing process and helps to implement order agriculture. Seed tape manufacturing and laying equipment are the core equipment of the technology and their working reliability directly affects the advantages of seed tape planting technology. Based on the research status of seed tape planting technology and equipment, this article made comparisons between the key technologies which include the method for seed tape manufacturing, seed tape sowing, furrowing, seed tape guiding technology, etc. In this paper, the basic problems of seed tape technology that still need further study are put forward. The future development of tape sowing technology and equipment are predicted as follows: the intelligent high precision and high-speed seed tape manufacturing equipment, the large intelligent integrated seed tape planter of “land preparation-seeding tape making-sowing”, the small and medium-sized mobile walk-behind planters, the application on the agricultural landscape and the crop transplanting. This study will be helpful to promote the further development of seed tape planting technology and provide a reference for the research of tape planting technology and equipment.

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Nardon, Gustavo F., et Guido F. Botta. « Prospective study of the technology for evaluating and measuring in-row seed spacing for precision planting : A review ». Spanish Journal of Agricultural Research 20, n^o 4 (10 octobre 2022) : e02R01. http://dx.doi.org/10.5424/sjar/2022204-19269.

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Corn is the most cultivated and consumed cereal in the world. The overall objective of this review was to study the methodologies to measure and evaluate the in-row seed spacing for precision planting as well as to determine the technological alternatives that would allow obtaining information about seed mapping for corn crop planting in precision agriculture applications. As a conceptual synthesis about the electronic measurement system, there are two strategies for determining in-row seed spacing in the precision planting. Indirect methods correspond to the measurement before the seeds reach the furrow, while direct methods correspond to the measurement with the seeds placed in the furrow. The indirect measurement strategy is the most widely used in research publications and commercial planter monitors. Within this method, the seed spacing measurement systems use optical or radio wave type seed sensors. Corn seed counting accuracy through electronic measurement systems with optical-type seed sensor is at least 96%. The microwave seed sensor is used commercially by a few companies whose technologies are patented. The direct measurement strategy is under development and requires further research. The main limitation of these technologies is the seed detection in the furrow, which limits the planter travel speed and the equipment cost. The conceptual proposal for the term ‘seed mapping’ is to provide integrated and geo-referenced information on in-row seed spacing and depth for precision planting.

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Khidrapure, Gajendra, S. N. Vasudevan, S. R. Doddagoudar, A. G. Sreenivas et Satyanarayana Rao. « Prediction of storability of organically produced paddy seeds through natural and accelerated ageing techniques ». Journal of Applied and Natural Science 8, n^o 3 (1 septembre 2016) : 1638–42. http://dx.doi.org/10.31018/jans.v8i3.1015.

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The present study was conducted to know the storage potential of organically produced paddy seeds in the Department of Seed Science and Technology, University of Agricultural Sciences, Raichur. The seed lot were divided into two parts, one part was stored in cloth bag for a period of 12 months under ambient conditions. At thesame time another set of seeds were subjected to accelerated ageing at 42 + 10C temperature and 90 per cent relative humidity (RH) for a period of 0-12 days. Among the ageing methods, artificially aged seeds showed drastic decreases in seed quality as compared to natural ageing. Among the treatments T9 (37.5 % FYM + 37.5 % vermicompost + 25 % neem cake + foliar spray of panchagavya on 30, 60, 90 and 120 DAT) recorded significantly highest seed quality parameters viz., seed germination (97.81 %), seedling length (29.42 cm) and SVI (2878) at initial stage in both the method of aging and at the end of storage period; seed germination (71.23 and 87.33 %), seedling length (19.66 and 27.00 cm) and SVI (1400 and 2358) in accelerated ageing (AA) and natural ageing (NA) respectively, whereas, lowest in control (Inorganic treatment). The seed quality parameters of four days of AA were similar to that of six months of NA. Hence, storability of organically produced paddy seeds were better as compared to inorganic seeds and it can be predicted that four days of AA is equal to six months of NA. The information generated will be useful in retention or disposal of a particular variety or seed lot.

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Amirkhani, Masoume, Hilary Mayton, Michael Loos et Alan Taylor. « Development of Superabsorbent Polymer (SAP) Seed Coating Technology to Enhance Germination and Stand Establishment in Red Clover Cover Crop ». Agronomy 13, n^o 2 (1 février 2023) : 438. http://dx.doi.org/10.3390/agronomy13020438.

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Drought conditions after sowing threaten the seedling establishment of all seeds, including cover crops. Cover crops are commonly broadcast and, thus, are often susceptible to drought stress after sowing. Our hypothesis was that seed coating with superabsorbent polymers (SAPs) would enhance germination in the lab and stand establishment in the field by increasing water availability to single seeds. Red clover (Trifolium pratense L.) seeds were coated with the following selected SAP formulations at 2% of their seed weight: cross-linked potassium polyacrylate (PAL), cross-linked polyacrylamide-based polymer (PAM), PAM with graphite (PAM+G), and Starch-g-2-Propenoic acid (potassium salt) (STR). The water absorbency of each SAP formulation was >200 g water/g of polymer; STR had the greatest absorbency, at 352 g water/g of polymer. A seed coating method was developed, resulting in the uniform application of SAP from seed to seed. All SAP coating treatments increased germination compared to the 0% SAP coating in controlled environment studies in the lab. Three field trials were conducted for each seed coating treatment, providing a range of climatic soil conditions. Within each field trial, the STR with the greatest water absorbency had a higher stand for treatments sown by broadcasting followed by raking to incorporate seeds. The first two trials were conducted under more stressful conditions. PAM+G performed best in the first two trials by broadcasting seeds with no raking. Collectively, the selected SAP seed coating improved field stands compared to the non-treated controls.

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Hill, H. J. « Recent Developments in Seed Technology ». Journal of New Seeds 1, n^o 1 (29 avril 1999) : 105–12. http://dx.doi.org/10.1300/j153v01n01_09.

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Hill, M. J., et P. Coolbear. « Development of education and training in seed science and technology ». Seed Science and Technology 33, n^o 1 (1 avril 2005) : 1–9. http://dx.doi.org/10.15258/sst.2005.33.1.01.

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McGill, Craig. « Editorial : Seed Science and Technology. Volume 47 Issue 2 (2019) ». Seed Science and Technology 47, n^o 2 (1 juillet 2019) : 237–41. http://dx.doi.org/10.15258/sst.2019.47.2.10.

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Nassoro, Fatuma Gharibu, Dorah Herman Bivugile, Eliud Theonest Ngimbwa et Luseko Amos Chilagane. « SOCIO-ECONOMIC DETERMINANTS OF SUNFLOWER SEED PRODUCTION IN SINGIDA REGION, TANZANIA ». International Journal of Agriculture, Environment and Bioresearch 08, n^o 01 (2023) : 109–19. http://dx.doi.org/10.35410/ijaeb.2023.58002.

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Sunflower seed production has been a response of rising demand for sunflower oil in the local and export market of Tanzania. The use of certified sunflower seeds has increased production of sunflower oil among the producers for local and export market. This work aimed at investigating the socio-economic determinants affecting sunflower seed production in Singida region of Tanzania. The cross-section research design with a sample size of 140 respondents was used to obtain information regarding determinants of sunflower seed production in the study area. The findings of the study shows that, the level of technology used by seed producers and suppliers, the use of skilled labor in the factories , the market deman, disasters and diseases were the key factors having a direct effect on sunflower seed production. The extent of seed production was measured based on tons of seeds produced in the years 2016 to 2020, and the study also found that sunflower seed production was low compared to the market demand at the same period. The study concluded that the rate of sunflower seed production and supply in the market can be increased by upgrading the technology used in sunflower seed value chain in Tanzania.

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McDonald, M. B., J. Marcos-Filho et R. J. Bino. « Seed technology training in the year 2000 ». Scientia Agricola 55, spe (1998) : 1–5. http://dx.doi.org/10.1590/s0103-90161998000500001.

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Seed quality will remain the centerpiece of successful agricultural programs in the year 2000. As new changes occur in agriculture driven by advancements in biotechnology, seed enhancement technologies, a more diverse seed user clientele, and communication technologies, successful seed companies will require a knowledgeable and informed workforce to assure high seed quality. A new approach to seed technology training is professed that relies on the establishment of a three-institution consortium to achieve this objective. Advantages of the consortium are identified that emphasize the unique strengths of each institution, their geographic advantages representing major climactic/agricultural zones in the world, and differing approaches to seed technology training that are facilitated by increasing ease of global communication. This may be a better way to conduct seed technology training in the year 2000.

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Nisha, A. Bhuker, SS Jakhar et N. Singh. « Assess the effect of natural ageing and storage containers on seed quality of tomato seeds ». Journal of Agriculture and Ecology 14 (5 novembre 2022) : 131–34. http://dx.doi.org/10.58628/jae-2214-218.

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The present study entitled "Seed quality assessment in the naturally aged seed of tomato was conducted during rabi 2020-2021 and 2021-2022 at the Department of Seed Science and Technology, CCS Haryana Agricultural University, Hisar. The freshly stored seed was observed to be highest in seed quality parameters i.e., germination per cent, seedling length, seedling dry weight and seed vigour indices as compared to when seeds were stored in different containers during 18 months storage period. As the storage period increase, the seed quality parameter goes on decreasing. Among the containers, 18-month seeds stored in a polythene bag (> 700 gauge) recorded significantly higher seed germination (60.67%), seedling length (8.77cm), seedling dry weight (11.42 mg), vigour index -I (532) and seed vigour index-II (793) as compared to a cloth bag. Standard germination percentage was maintained up to 15 months of storage in a polythene bag. In both containers, polythene bags performed better than cloth bags throughout the storage period.

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Krzyzanowski, Francisco Carlos, Sherlie Hill West et José de Barros França Neto. « Drying soybean seed using air ambient temperature at low relative humidity ». Revista Brasileira de Sementes 28, n^o 2 (2006) : 77–83. http://dx.doi.org/10.1590/s0101-31222006000200010.

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Under subtropical and tropical environments soybean seed (Glycine max (L.) Merrill) are harvested early to avoid deterioration from weathering. Careful after-harvest drying is required and is an important step in maintaining the physiological quality of the seed. Soybean seed should be harvested when the moisture content is in a range of 16-20%. Traditional drying utilizes a high temperature air stream passed through the seed mass without dehumidification. The drying time is long because the system is inefficient and the high temperature increases the risk of thermal damage to the seed. New technology identified as heat pipe technology (HPT) is available and has the unique feature of removing the moisture from the air stream before it is passed through the seed mass at the same environmental temperature. Two studies were conducted to evaluate the performance of HPT for dry soybean seed. In the first study the seeds were dried from 17.5 to 11.1% in 2 hours and 29 minutes and in the second sudy the seeds were dried from 22.6 to 11.9% in 16 hours and 32 minutes. This drying process caused no reduction in seed quality as measured by the standard germination, tetrazolium-viability, accelerated aging and seedling vigor classification tests. The only parameter that indicated a slight seed quality reduction was tetrazolium vigor in the second study. It was concluded that the HPT system is a promising technology for drying soybean seed when efficiency and maintenance of physiological quality are desired.

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Deleuran, Lise C., Merete H. Olesen et Birte Boelt. « Spinach seed quality : potential for combining seed size grading and chlorophyll fluorescence sorting ». Seed Science Research 23, n^o 4 (7 juin 2013) : 271–78. http://dx.doi.org/10.1017/s0960258513000202.

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AbstractSpinach (Spinacia oleracea L.) seed quality is important for subsequent establishment of baby leaf and other spinach products. The indeterminate flowering pattern in spinach produces seeds of different sizes, and consequently a non-uniform seed lot. Sorting seeds based on novel sorting methods might therefore improve the establishment of spinach for producers. Spinach seeds were harvested at five different times (H1, H2, H3, H4 and H5) starting 3 weeks before estimated optimum harvest time. The harvested seeds were sorted according to chlorophyll fluorescence (CF) and seed size. Two harvest times 6 d apart were selected for further studies of seed development and germination counts. Analysis of mean germination time (MGT) of four germination counts (3, 7, 14 and 21 d) showed that smaller seed sizes ( < 3.25 mm) have lower MGT than seeds of larger sizes (>3.25 mm). A larger proportion of 2.5–3.25 mm size seeds had germinated on day 3 than both their larger and smaller counterparts at the later time of harvest (H4). Seeds with a diameter below 2.5 mm displayed the lowest MGT. Commercially, the use of chlorophyll fluorescence (CF)-sorted seeds, in combination with seed size sorting, may provide a useful tool for enhancing seed quality. Here our results demonstrate that a greater number of seeds with a low CF level had germinated on day 3 compared to the seeds with high CF levels. It is of relevance to develop a technology that could identify seeds that are sufficiently developed to germinate and successfully establish in the field regardless of seed size.

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K. Rathinavel, C. Priyadharshini et H. Kavitha. « SEED TREATMENTS-IMPACT ON COTTON SEED QUALITY AND PRODUCTIVITY ». International Journal of Agriculture and Environmental Research 06, n^o 04 (2020) : 589–614. http://dx.doi.org/10.51193/ijaer.2020.6406.

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Seed treatment is the application of certain curative agents for the enhancement of seed quality, applied through physical means, or chemical, or biological agents to the seed before sowing to suppress, control, or ward off the pathogens, insects and other pests that attack seeds, seedlings, or plants and it ranges from a basic dressing to coating and pelleting. Among the different seed treatments, biological seed treatments are expected to be one of the fastest-growing seed treatment sectors shortly due to its eco-friendliness. Lack of awareness of seed treatments at farmer’s level is one of the limiting factors and hence, efforts should be made at farmer’s level to adopt the technology. The different seed treatment technologies with their improvement and significance are discussed in this review.

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S, Sundareswaran, Thirumurugan R, Ganesan K.N et Paramasivam V. « Standardization of Salt Solution Concentration for Upgrading CORH 3 Hybrid Rice and its Parental Line Seeds by Floatation Technique ». Madras Agricultural Journal 97, January March (2010) : 33–36. http://dx.doi.org/10.29321/maj.10.100336.

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Studies were under taken to standardize the concentration of salt solution for upgrading CORH 3 hybrid rice and its parental line seeds through floatation technique in the Department of Seed Science and Technology, Tamil Nadu Agricultural University Coimbatore. Considering the various seed quality attributes such as seed recovery (68.6 %, 93.6 % and 71.4 % in A line, R line and hybrid respectively), separation of split husk seeds (1.2 %, 0.06 % and 4.2 % in A line, R line and hybrid respectively), seed germination (85 %, 93 % and 92 % in A line, R line and hybrid respectively) and vigour (2822, 3352 and 3329 in A line, R line and hybrid respectively), grading the seeds by floatation method using six per cent sodium chloride salt solution was found to be the optimum for seed quality up gradation in CORH 3 hybrid rice and its parental lines for various physical and physiological attributes studied.

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Baughman, Owen, Anna Hosford et Emily Ralston. « Evaluating Seed Enhancement Technology’s Effects on Seed Viability during Multi-Year Storage : A Case Study Using Herbicide Protection Pellets ». Plants 12, n^o 20 (23 octobre 2023) : 3662. http://dx.doi.org/10.3390/plants12203662.

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The viability of seed often decreases during multi-year storage. For seed enhancement technologies (SETs) that apply treatments to native seed prior to sowing in restoration projects, it is important to determine if SETs affect the rate of viability loss in storage to understand if treated seeds can tolerate storage or if they must be sown immediately after treatment. Examining herbicide protection pellet (HPP) seed technology, we conducted germination trials on 10 seedlots of four species to compare three treatments: original bare seed kept in seed storage for 2–3 years, seed retrieved from 2–3-year-old HPPs made from pre-storage original bare seed (old HPPs), and seed retrieved from HPPs that were freshly-made using post-storage original bare seed (new HPPs). For three perennial bunchgrasses, we saw equal or higher germinability of seed from old HPPs compared to the original bare seed and new HPPs, suggesting application of HPP technology to these species prior to multi-year storage is suitable. For the seeds of a perennial shrub, although we saw greater germination of original bare seeds compared to old HPPs, the lowest germination was from new HPPs, still suggesting HPP application prior to storage as a suitable practice. We suggest these tests be performed with all new SETs under development for ecological restoration.

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Huda, MS, SMM Hossain, MR Islam, ATMS Islam et A. Hannan. « Quality Assessment of the Farmer’s Produced Seed Potatoes ». Bangladesh Journal of Agricultural Research 46, n^o 3 (26 janvier 2023) : 343–52. http://dx.doi.org/10.3329/bjar.v46i3.64134.

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The experiment was conducted at the research field and post graduate laboratory of Plant Pathology Department, Hajee Mohammad Danesh Science and Technology University, Dinajpur, during 2015 - 2016 to find out the performance of different source’s seed potatoes and select suitable methods for improvement of farm saved seed potatoes. In the experiment, farm saved seed was compared with the certified seed, positive selection’s seed, seed plot technique’s (STP) seed Potato and Truthfully level seed potato as of BARI Alu-8(Cardinal). The maximum yield (27.72 t ha-1) was recorded from positive selection’s seed, which was similar to Certified and SPT seeds. The maximum plants of farmer’s seed potatoes (≥ 8 %, 7.33 % and 4.17 %) were infected by PVY, PLRV and PMV, respectively. The seed potatoes of positive selection and seed plot technique were the best alternatives to supplement the certified seed. Bangladesh J. Agril. Res. 46(3): 343-352, September 2021

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Parameswari, K., S. Sangeetha et V. Vijayageetha. « Assessing efficiency of seed hardening treatments in blackgram ». INTERNATIONAL JOURNAL OF PLANT SCIENCES 16, AAEBSSD (15 juillet 2021) : 38–42. http://dx.doi.org/10.15740/has/ijps/16.aaebssd/38-42.

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Seed is a biological entity and its quality is improved through seed hardening. Seed hardening is a simple method to alter the physiological and biochemical nature of the seeds. Any successful technology could be performed well in farmer field and their feedback will be helpful for fine tuning of the technology. On farm trial was conducted in farmers field with two seed hardening treatments viz., (i) Seed hardening with Zinc sulphate @ 0.1g/lit for 3 hr and (ii) Seed hardening with Sodium molybdate @ 0.5g/lit for 3 hr along with untreated seeds as a control during Rabi, 2017-18. The results revealed that seed hardening with Sodium molybdate @ 0.5g/lit performed better interms of yield (678 kg/ha), net return (Rs.23,125/ ha) and benefit cost ratio (1.81) compared to seed hardening with Zinc sulphate @ 0.1g/lit and control and which was 669 kg/ha, Rs.21913/ha, 1.77 and 514 kg/ha, Rs.12159 /ha, 1.45, respectively. However, the minimum yield difference was observed between the seed hardening treatments but both seed hardening treatment were excelled over the control. Hence, seed hardening with Sodium molybdate @ 0.5g/lit or Zinc sulphate @ 0.1g/lit for 3 hr found effective in increasing the yield in blackgram. The knowledge level of farmers on seed hardening treatments increased from 13 to 70 per cent which was made through on farm testing programme.

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Boelt, Birte, Santosh Shrestha, Zahra Salimi, Johannes Ravn Jørgensen, Mogens Nicolaisen et Jens Michael Carstensen. « Multispectral imaging – a new tool in seed quality assessment ? » Seed Science Research 28, n^o 3 (27 juin 2018) : 222–28. http://dx.doi.org/10.1017/s0960258518000235.

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AbstractMultispectral imaging is a new technology that is being deployed to assess seed quality parameters. Examples of applications in the detection and identification of fungi on seeds are presented, together with an example of the technology used for maturity determination in sugar beet seed. Results from multispectral imaging are compared with reference methods, and a high correlation is found. Applications of the technique for varietal discrimination and insect damage are also presented. There is a need for non-destructive, reliable and fast techniques, and it is concluded that multispectral imaging has potential for seed quality assessment, in particular for those components associated with surface structure and chemical composition, seed colour, morphology and size.

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Manjunatha, B., S. N. Vasudevan, Umesha Umesha et Chintalapati Sravani. « Studies on influence of modified atmospheric storage conditions on biochemical parameters in pigeonpea seeds ». Journal of Applied and Natural Science 8, n^o 3 (1 septembre 2016) : 1249–52. http://dx.doi.org/10.31018/jans.v8i3.949.

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An experiment was conducted to study the influence of modified atmospheric storage conditions on biochemical parameters of pigeonpea seeds. The experiment was conducted at the Department of Seed Science and Technology, College of Agriculture, Raichur, Karnataka. The seeds are exposed to various gaseous combinationsand stored in 700 gauge polyethylene bag for ten months during July-2012 to April- 2013. The results revealed that, the seeds exposed to gaseous combination of 40% N2+00% O2+ 60% CO2 showed less reduction in dehydrogenase enzyme activity and protein content (0.276 OD (optical density) value, 19.33 % respectively) as compared to the control (0.211 OD value and 18.13 % respectively) after ten months of storage. In addition less seed leachate (2.029 dSm-1) was recorded in gaseous combination of 40% N2+00% O2+ 60% CO2 as compared to control (2.207dSm-1). It indicates the potential use of modified atmospheric storage technology for maintenance of seed viability and vigour during storage in pulses.

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Maity, Aniruddha, S. K. Chakravarty et J. B. Yadav. « Standardisation of hybrid seed production technology of first Indian mustard (Brassica juncea) hybrid NRCHB 506 ». Indian Journal of Agricultural Sciences 82, n^o 9 (18 septembre 2012) : 753–8. http://dx.doi.org/10.56093/ijas.v82i9.23828.

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Field experiments were conducted in 2009–10 and 2010–11 to standardise the sowing time and planting ratio of the parental lines of the recently released Indian mustard (Brassica juncea L. Czern. & Coss) hybrid NRCHB 506. The results indicated that the optimum sowing time of parental lines of NRCHB 506 is the third week of October to achieve higher yield of good quality hybrid seed. Optimum planting ratio of female to male parental line for hybrid seed production was 8:2. Further increase in number of female rows per male row decreased the plant and plot yield of the hybrid seed production plot. The results pertaining to flowering phenology and characters, seed yield and its attributing traits indicated that delay in sowing beyond October reduces the value of those characters significantly leading to decline in seed yield from seed parent. The primary factor responsible for the reduction of values in the late sowing was the higher temperature during reproductive and seed feeling stage. Sowing in October and growing of plants in relatively high temperature extended the vegetative phase, i e delayed the flowering by four days as compared to that in November sowing which experienced a lower temperature during early growth stage. Delay in sowing reduced the flowering duration which had a direct impact on the number of flowers, siliqua set, seeds/siliqua and finally seed yield/plant.

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Kumar, Kishore, et Jitendra Kumar S. Hilli. « Influence of desiccants on seed quality attributes of wheat crop under hermetic storage ». INTERNATIONAL JOURNAL OF AGRICULTURAL SCIENCES 17, n^o 2 (15 juin 2021) : 522–27. http://dx.doi.org/10.15740/has/ijas/17.2/522-527.

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An investigation was undertaken with main objectives to know the effect of desiccants on seed quality parameters of crop seeds during storage and to assess the benefit cost ratio of storage method (economics) in wheat with initial seed moisture content of 12.3 %, was carried out at Department of Seed Science and Technology, College of Agriculture, UAS, Dharwad. Quantity of desiccants stored per kilogram of seed in wheat seeds is 0.37 kg for zeolite beads, one kg for silica gel, calcium carbonate and control without desiccant in airtight container. The experiment was laid out in Completely Randomized Design with four treatments and five replications. Seed stored with zeolite beads recorded the highest germination (88.8 %) which was on par with silica gel (87.2 %) at the end of storage period. Lower seed moisture and hundred seed weight was observed in the seeds stored with silica gel at the end of storage period. Higher shoot length, root length, seedling vigour-I and seedling dry weight was observed in seeds stored with zeolite beads which was on par with Silica gel at the end of storage period. compared to control. Therefore, it can be concluded that the zeolite beads can safely be used for seed drying without impairment in seed quality.

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França-Neto, J. B., et M. J. Oliveira. « Seed technology research in Brazil : evolution and perspective ». Scientia Agricola 55, spe (1998) : 8–18. http://dx.doi.org/10.1590/s0103-90161998000500003.

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A brief review about the historical evolution of seed technology research in Brazil is presented, pointing out the most important facts that contributed to the development of our seed production complex and research system. The role of PLANASEM and AGIPLAN and their cooperative projects with UFPEL, ESALQ and Mississippi State University is mentioned. Major seed related publications and events, such as seminars and congresses, which contributed to the development of seed research are included and analyzed. A survey of the most important lines of seed technology research conducted in Brazil is presented. Additionally, the Brazilian universities and research institutions that significantly contributed to seed research in the past 30 years are identified. Possible tendencies and perspectives for seed research in the next five years are conjectured.

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Pain, Anup, Amit Kumar Basunia, Mahmudul Hasan Chowdhury, Md Mohimenul Islam, Mir Enamul Haque et Ahmed Khairul Hasan. « Studies on the Quality and Health Status of T. Aman Rice Seeds Collected From Different Sources ». Research in Agriculture Livestock and Fisheries 9, n^o 2 (5 septembre 2022) : 103–16. http://dx.doi.org/10.3329/ralf.v9i2.61616.

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A laboratory experiment was carried out at the Professor GAF Seed Pathology Centre and Laboratory of Department of Seed Science and Technology, Bangladesh Agricultural University (BAU), Mymensingh during the period of July 2018 to January 2019 to determine the effect of seed sources on quality and health status in some Transplanted Aman rice varieties in Bangladesh. Among the seed sources, the moisture content was recorded from 10.40% to 13.37%. In case of purity analysis of seed pure seed ranged from 39.23g to 39.94g. Germination test of rice seeds was recorded and the percentage of total number of germination ranged from 55.75% to 93.0%, normal seedling (51.50 % to 86.50%), abnormal seedling (4.75 % to 10.75%), fresh ingeminated seed (1.75% to15.0%), hard seed (0.0 % to 11.75%), dead seed (2.75% to 21.25%), respectively. Vigour index in the seed sources ranged from (1255.80 to 2089.86). In dry inspection test apparently healthy seeds (17.74gto 28.92g), spotted seeds (9.8g to 17.34g), deformed seeds (0.36g to 5.58g), discolored seeds (0.34g to 3.40g), inert mater (0.00g to 0.38g), insect damaged seeds (0.00g to 0.24g) and chaffy seeds (0.08 g to 1.14g) were recorded(2.75% to 21.25%), respectively. In the seed health study, seven species of fungi were recorded. In the seed health test Alternaria padwickii (1.25 % to 5.50%), Aspergilus niger (0.0% to 1.75%), Bipolaris oryzae (0.0% to 1.50%), Curvularia lunata (0.00% to 1.0%), Aspergillus flavus (0.00% to 1.25%), Penicillium sp. (0.00% to 1.50%) were recorded, respectively. Most of the farmers were failed to obtain the quality and good health status. In this study, BRRI dhan34 in farmer's seed recorded the highest performance in the seed sources and the lowest performance was recorded in BRRI dhan49 in farmer's seed. Among the seed sources BR22 of BADC seed (T8) performed the best in respect of seed quality and seed health. Vol. 9, No. 2, August 2022: 103-116

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Yang, Huan, Cheng Wang, Han Zhang, Ya’nan Zhou et Bin Luo. « Recognition of maize seed varieties based on hyperspectral imaging technology and integrated learning algorithms ». PeerJ Computer Science 9 (10 mai 2023) : e1354. http://dx.doi.org/10.7717/peerj-cs.1354.

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Purity is an important factor of maize seed quality that affects yield, and traditional seed purity identification methods are costly or time-consuming. To achieve rapid and accurate detection of the purity of maize seeds, a method for identifying maize seed varieties, using random subspace integrated learning and hyperspectral imaging technology, was proposed. A hyperspectral image of the maize seed endosperm was collected to obtain a spectral image cube with a wavelength range of 400∼1,000 nm. Methods, including Standard Normal Variate (SNV), multiplicative Scatter Correction (MSC), and Savitzky–Golay First Derivative (SG1) were used to preprocess raw spectral data. Iteratively retains informative variables (IRIV) and competitive adaptive reweighted sampling (CARS) were used to reduce the dimensions of the spectral data. A recognition model of maize seed varieties was established using k-nearest neighbor (KNN), support vector machine (SVM), line discrimination analysis (LDA) and decision tree (DT). Among the preprocessing methods, MSC has the best effect. Among the dimensionality reduction methods, IRIV has the best performance. Among the base classifiers, LDA had the highest precision. To improve the precision in identifying maize seed varieties, LDA was used as the base classifier to establish a random subspace ensemble learning (RSEL) model. Using MSC-IRIV-RSEL, precision increased from 0.9333 to 0.9556, and the Kappa coefficient increased from 0.9174 to 0.9457. This study shows that the method based on hyperspectral imaging technology combined with subspace ensemble learning algorithm is a new method for maize seed purity recognition.

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J, VIJAYA, et PONNUSWAMY A.S. « STUDIES ON SEED FORTIFICATION AND PELLETING IN BLACKGRAM ». Madras Agricultural Journal 85, December (1998) : 549–51. http://dx.doi.org/10.29321/maj.10.a00796.

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Studies on seed fortification and pelicting on crop growth and yield in black gram was carried out at the Department of Seed Science Technology. Tamil Nadu Agricultural University. Coimbatore during 1995. The nutrients ZnSO,, MnSO,. Na.MO, and DAP were used for fortification and pelleting. The blackgram seeds fortified with ZnSO,+ MnSO, Na,MO, and the pelleted with DAP registered higher yield of 1.37 kg plot having the size of 2.25 m x 3m.

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