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Journal articles on the topic 'Varietal trials'

Author: Grafiati

Published: 8 September 2023

Last updated: 31 July 2025

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1

Hasan, Syed Sarfaraz, Arun Baitha, Lal Singh Gangwar, and Sanjeev Kumar. "Evaluation of resampling techniques for deep learning based identification of promising genotypes in sugarcane varietal trials." Indian Journal of Genetics and Plant Breeding (The) 84, no. 01 (2024): 92–98. http://dx.doi.org/10.31742/isgpb.84.1.8.

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Deep learning is a class of machine learning algorithms that extract high-level features from the raw input for making intelligent decisions. Identification of promising genotypes in varietal trials is one of many agriculture domain applications requiring implementation of deep learning to perform intelligent decision using varietal trial data. However, it has been found that varietal trial data to be used for identification is highly imbalanced one providing great challenges for classification tasks in deep learning. For example, only 33 genotypes were identified as promising in zonal varieta

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2

WILLIAMS, ROBERT, REBECCA ANDERSEN, ARMANDINA MARCAL, LUIS PEREIRA, LUIS ALMEIDA, and WILLIAM ERSKINE. "EXPLORATORY AGRONOMY WITHIN PARTICIPATORY VARIETAL SELECTION: THE CASE OF PEANUT IN EAST TIMOR." Experimental Agriculture 48, no. 2 (2012): 272–82. http://dx.doi.org/10.1017/s0014479711001207.

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SUMMARYWithin the context of participatory varietal selection of peanut (Arachis hypogaea L.) in East Timor, this study investigated an approach to identify yield determinants in farmer-managed varietal trials in a type of exploratory agronomy. A singular increase of 47% in peanut on-farm productivity by variety Utamua over local varieties was recorded across agro-ecologies over 616 farmer-managed trials in five cropping seasons. Utamua has larger (c. 70%) seed than local, which resulted in poor germination initially. Farmers then started seed priming, and, by the last two seasons’ trials, 50%

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Singh, M., S. Ceccarelli, and J. Hamblin. "Estimation of heritability from varietal trials data." Theoretical and Applied Genetics 86, no. 4 (1993): 437–41. http://dx.doi.org/10.1007/bf00838558.

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4

Ashraf, Farzana, Khezir Hayat, Muhammad Akbar, et al. "CYTO-124: A REMARKABLE VARIETY EVOLVED AGAINST COTTON LEAF CURL VIRUS DISEASE THROUGH INTROGRESSION." Pakistan Journal of Biotechnology 20, no. 01 (2023): 110–19. http://dx.doi.org/10.34016/pjbt.2023.20.01.799.

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Central Cotton Research Institute (CCRI), Multan, Pakistan has evolved an upland cotton cultivar “Cyto-124” through introgression for Cotton Leaf Curl Virus (CLCuV) resistance. It was developed through crossing [{2(G. hir. x G. ano.) X 3G. hir.} x {2(G. arbo. x G. ano.) x 2G. hir. It was tested for seed cotton yield in varietal trials, and zonal varietal trials at Govt. and farmer fields. Cyto-124 gave 37.1, 19.9 and 22.4% higher yield as compared to three standards MNH-786, CIM-554 and CRSM-38 respectively in varietal trials whileCyto-124 had seed cotton yield of 3075 kg ha-1 in-contrast to 2

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Butler, Marvin D., and Jackson A. Davis. "BROCCOLI VARIETAL TOLERANCE TO DOWNY MILDEW." HortScience 27, no. 6 (1992): 629d—629. http://dx.doi.org/10.21273/hortsci.27.6.629d.

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Downy mildew is a major concern to broccoli growers in the Sonoran Desert. Control measures include wide use of fungicide applications to prevent economic damage. Recent removal of EBDC type fungicides from the market and restrictions imposed on other registered materials has increased interest by growers and broccoli breeders in developing varieties tolerant to downy mildew. From 1984 to 1989 varieties were evaluated for tolerance to downy mildew in unreplicated trials conducted in commercial fields. In 1990, named varieties of current interest in desert production which showed tolerance to t

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Jain, R. C., and M. N. Das. "Designs Suited for Varietal Trials with Multiple Basals." Biometrical Journal 33, no. 1 (1991): 103–12. http://dx.doi.org/10.1002/bimj.4710330113.

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7

Lando, T. M. "Rice Varietal Differences in Number of Brokens." International Rice Research Newsletter 13, no. 4 (1988): 6. https://doi.org/10.5281/zenodo.7136214.

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This article 'Rice Varietal Differences in Number of Brokens' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

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Cullis, B. R., and A. C. Gleeson. "Efficiency of neighbour analysis for replicated variety trials in Australia." Journal of Agricultural Science 113, no. 2 (1989): 233–39. http://dx.doi.org/10.1017/s0021859600086810.

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SUMMARYUse of a one-dimensional neighbour method of analysis in 1019 variety trials of a range of crops conducted by plant breeders in four states of Australia in 1985–87 resulted in an average reduction of 42% in variances of varietal yield differences compared with conventional randomized complete block analysis. Of these trials, 219 were designed as square, rectangular or generalized lattices and the average reduction in variances of varietal yields with incomplete block analysis and recovery of interblock information was 33%. The results emphasized that plots should be wide enough to avoid

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9

Muhammad, Khan Idrees, Shehzad Fazal, and Husain Khadim. "Approval and commercial release of conventional, yielding, early maturing and heat tolerant with desirable fiber traits variety CIM-554." International Journal of Cotton Research and Technology 3, no. 1 (2021): 1. https://doi.org/10.33865/ijcrt.003.01.0456.

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Changes in the environment including heat and drought significantly declined the production of cotton. CCRI,. Multan developed a new variety CIM-554 through hybridization in this scenario. There is significantly higher yields recorded in advance varietal and agro-climatic Trials at farmers’ fields and Govt. Farms in four consecutive years (2005-2008). In varietal trials, CIM-554 gave 20.2%, 14.5%, 12.6%, 12.8%, 22.7%, and 28.4%, increase- over commercial varieties MNH-786, CIM-534, CIM-496 NIAB-111, CIM-506 and CIM-499 respectively for seed cotton yield. In Zonal varietal trials (2007-08), CIM

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10

Shrestha, Jiban. "Evaluation of Quality Protein Maize Genotypes for Grain Yield in Mid Hill Districts of Nepal." International Journal of Life Sciences 10, no. 1 (2016): 7–9. http://dx.doi.org/10.3126/ijls.v10i1.14514.

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The present study pertaining to the identification of high yielding quality protein maize genotypes was conducted under coordinated varietal trials (CVT) at Khumaltar (Lalitpur) and Kabre (Dolakha) from 2011 to 2012 summer season and under coordinated farmers' field trials (CFFT) at Lumle (Kaski), Kimugaun (Dailekh) and Kabre (Dolakha) in 2011 summer season and at Dailekh and Kabre in 2012 summer season. The results of these trials showed that the genotypes namely Obatanpa followed by S99TLWQ-B and S01SIYQ produced the highest grain yield under coordinated varietal trials and genotypes namely

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Chaudhary, R. C., and S. Fujisaka. "Farmer-Participatory Rainfed Lowland Rice Varietal Testing in Cambodia." International Rice Research Newsletter 17, no. 4 (1992): 17. https://doi.org/10.5281/zenodo.7218931.

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This article 'Farmer-Participatory Rainfed Lowland Rice Varietal Testing in Cambodia' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

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Rahmianna, Agustina Asri, Tony Basuki, Medo Kote, Yohanes L. Seran, and Rao C. N. Rachaputi. "Increasing productivity of mungbean (vigna radiata (l.) Wilczek) under subsistence farming in Eastern Indonesia." IOP Conference Series: Earth and Environmental Science 911, no. 1 (2021): 012029. http://dx.doi.org/10.1088/1755-1315/911/1/012029.

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Abstract Mungbean is one of the major food legume and cash crops grown and consumed by small holder farmers under rain-fed conditions in Eastern Indonesia. However, the mungbean productivity has been low, less than 1 ton ha−1 due to a number of reasons including poor awareness about new varieties and skills of crop management. Two trials: varietal trial and management practices were conducted at Malaka District, East Nusa Tenggara during wet season 2008. The varietal trial in six sites resulted in identification of Sriti, Murai, Betet, and Vima 1 varieties had high productivity (1.1-1.5 t ha−1

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Hemant Kumar, SJ Satheesh Naik, AK Singh, and IP Singh. "Simultaneous selection for yield and stability in pigeonpea of north east plain zone of India." Journal of Food Legumes 36, no. 4 (2024): 299–302. http://dx.doi.org/10.59797/jfl.v36.i4.167.

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Yield improvement is the prime objective of any varietal development programs. Therefore, stability of the yield becomes an important criterion in pigeon pea because it is cultivated in rainfed conditions. For the varietal development program, multi-environment trials are conducted to advance the entries at different stages of the trial and in turn to release as varieties. Multi-environmental trials have generally significant genotype and genotype × environment interactions effect, and different univariate and multi-variate stability methods have been used to study the genotype × environment i

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VIRK, D. S., D. B. PANDIT, M. A. SUFIAN, et al. "REML IS AN EFFECTIVE ANALYSIS FOR MIXED MODELLING OF UNBALANCED ON-FARM VARIETAL TRIALS." Experimental Agriculture 45, no. 1 (2009): 77–91. http://dx.doi.org/10.1017/s0014479708007047.

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SUMMARYOn-farm participatory varietal selection (PVS) trials are often of two types: mother trials (with all of the entries) and baby trials (each having one, or very few of the entries from the mother trials). We conducted PVS trials on 17 wheat varieties in 12 villages of four districts of Bangladesh over three years but the data were highly unbalanced. Both quantitative and qualitative traits were measured in the on-farm trials. The factors in the trials were both fixed effects (varieties and districts) and random (years and farmers). We used the residual or restricted maximum likelihood (R

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15

Joshi, A., and J. R. Witcombe. "Farmer Participatory Crop Improvement. II. Participatory Varietal Selection, a Case Study in India." Experimental Agriculture 32, no. 4 (1996): 461–77. http://dx.doi.org/10.1017/s0014479700001538.

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SUMMARYFarmer participatory varietal selection (PVS) was used to identify farmer-acceptable cultivars of rice and chickpea. Farmers' requirements in new crop cultivars (varieties) were determined, a search was carried out for released and non-released cultivars that matched these needs, and they were tested in farmer-managed, participatory trials. Farmer-acceptable cultivars were found amongst released material, but not among the recommended material for the area. Lack of adoption is, therefore, because resource-poor farmers have not been recommended or exposed to the most appropriate cultivar

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Joshi, A., and J. R. Witcombe. "Farmer Participatory Crop Improvement. II. Participatory Varietal Selection, a Case Study in India." Experimental Agriculture 32, no. 4 (1996): 461–77. http://dx.doi.org/10.1017/s0014479700003811.

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SUMMARYFarmer participatory varietal selection (PVS) was used to identify farmer-acceptable cultivars of rice and chickpea. Farmers' requirements in new crop cultivars (varieties) were determined, a search was carried out for released and non-released cultivars that matched these needs, and they were tested in farmer-managed, participatory trials. Farmer-acceptable cultivars were found amongst released material, but not among the recommended material for the area. Lack of adoption is, therefore, because resource-poor farmers have not been recommended or exposed to the most appropriate cultivar

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17

Waqas, Ahmad, Shahid Ali, and Muhammad Zahir Ahsan. "National Coordinated Varietal trials (NCVT) for Cotton in Pakistan During 2020." International Journal of Cotton Research and Technology 3, no. 1 (2022): 33. https://doi.org/10.33865/ijcrt.003.01.1458.

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National Coordinated Varietal trials (NCVT) for cotton are conducted by the Directorate of Agricultural Research, PCCC with the objective of testing promising breeding material/strains developed by various cotton breeders of Federal and Provincial institutes as well as private sector seed companies for adaptability under various soil and agro-climatic conditions of different ecological zones under the supervision which are entrusted with the task of research on cotton varieties in the country prior to their approval for general cultivation. During 2020-21 four (4) set of trials (Set-A, Set-B,

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Fairhurst, Stacey M., Lorna J. Cole, Tereza Kocarkova, Catherine Jones-Morris, Andy Evans, and Gail Jackson. "Agronomic Traits in Oilseed Rape (Brassica napus) Can Predict Foraging Resources for Insect Pollinators." Agronomy 11, no. 3 (2021): 440. http://dx.doi.org/10.3390/agronomy11030440.

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Mass-flowering crops, such as oilseed rape (OSR; Brassica napus), provide pulses of nectar and pollen, helping to support pollinators and their pollination services in agricultural landscapes. Despite their value to declining pollinators, varietal in-field OSR testing focusses on agronomic traits, with floral resources being largely overlooked. OSR has a high varietal turnover, and consequently, floral resource data collected for a specific variety quickly become redundant. Here, we explore the potential to predict floral resource availability using agronomic trait data routinely collected in

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Psota, Vratislav, Marián Svorad, Markéta Musilová, and Michaela Némethová. "Barley varieties registered in the Slovak Republic after the harvest of 2020." KVASNY PRUMYSL 67, no. 3 (2021): 442–46. http://dx.doi.org/10.18832/kp2021.67.442.

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The study presents results of malting quality and agronomic characteristics of the LG Verdi, LG Tosca, and Spitfire spring barley varieties that were obtained during a three-year period of testing within the state varietal trials in the Slovak Republic. Extract from the varieties was at the level from 82.9 to 84.1%. The varieties exhibited optimal and high levels of proteolytic modification (47.4 to 52.0%) and satisfactory to optimal levels of final attenuation (80.8 to 81.8%). Degradation of cell walls was high – between 86 and 96%. Beta-glucan content was at a satisfactory to optimal level o

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PARIS, THELMA R., ABHA SINGH, AMELIA D. CUENO, and V. N. SINGH. "ASSESSING THE IMPACT OF PARTICIPATORY RESEARCH IN RICE BREEDING ON WOMEN FARMERS: A CASE STUDY IN EASTERN UTTAR PRADESH, INDIA." Experimental Agriculture 44, no. 1 (2008): 97–112. http://dx.doi.org/10.1017/s0014479707005923.

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SUMMARYThis paper assesses farmer adoption of rice varieties and new genotypes introduced through participatory varietal selection (PVS) in villages which represent submergence- and drought/submergence-prone villages in eastern Uttar Pradesh, India. It focuses on the involvement of women farmers in participatory research for screening improved varieties for areas which suffer from abiotic stresses. It further assesses the impact on the decision-making authority (or women's empowerment) on rice varietal choice, seed acquisition and disposal, and crop management after participating in PVS trials

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VOM BROCKE, KIRSTEN, GILLES TROUCHE, EVA WELTZIEN, et al. "HELPING FARMERS ADAPT TO CLIMATE AND CROPPING SYSTEM CHANGE THROUGH INCREASED ACCESS TO SORGHUM GENETIC RESOURCES ADAPTED TO PREVALENT SORGHUM CROPPING SYSTEMS IN BURKINA FASO." Experimental Agriculture 50, no. 2 (2013): 284–305. http://dx.doi.org/10.1017/s0014479713000616.

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SUMMARYSorghum (Sorghum bicolor(L.) Moench) is a major staple crop of Burkina Faso where farmers continue to cultivate photoperiod-sensitive guinea landraces as part of the strategy to minimize risk and ensure yield stability. In the Boucle du Mouhoun region, however, sorghum farmers appear to have insufficient varietal choice due to cropping systems having shifted towards more intensive cultivation of cotton and maize, and rainfall patterns having decreased over the past decade. In search for new varietal options that can respond to this changing context, researchers decided to give farmers a

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Iqbal, Zafar, Muhammad Shafiq, Sajed Ali, et al. "qPCR Assay as a Tool for Examining Cotton Resistance to the Virus Complex Causing CLCuD: Yield Loss Inversely Correlates with Betasatellite, Not Virus, DNA Titer." Plants 12, no. 14 (2023): 2645. http://dx.doi.org/10.3390/plants12142645.

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Cotton leaf curl disease (CLCuD) is a significant constraint to the economies of Pakistan and India. The disease is caused by different begomoviruses (genus Begomovirus, family Geminiviridae) in association with a disease-specific betasatellite. However, another satellite-like molecule, alphasatellite, is occasionally found associated with this disease complex. A quantitative real-time PCR assay for the virus/satellite components causing CLCuD was used to investigate the performance of selected cotton varieties in the 2014–2015 National Coordinated Varietal Trials (NCVT) in Pakistan. The DNA l

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Pokhrel, Anil, and Padam Prasad Poudel. "Yield and Yield Attributing Characters of Different Varieties of Kidney Bean (Phaseolus vulgaris L.) in Western Nepal." Asian Plant Research Journal 13, no. 4 (2025): 24–30. https://doi.org/10.9734/aprj/2025/v13i4314.

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Kidney bean (Phaseolus vulgaris L.), locally known as Rajma, is popular from the Terai to the Hills of Nepal. Its current national productivity is low at 1.2 t/ha, and stagnant due to the limited availability of high-yielding varieties, inappropriate sowing times, and suboptimal agronomic practices. To address this gap and identify promising genotypes for varietal release, a series of multi-year trials were conducted during the winters of 2022/23 and 2023/24 in the Grain Legumes Research Program (GLRP), Khajura, Banke, Nepal. These trials included an Observation Nursery (OBN) with 24 genotypes

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Zhang, Qifa, and Shu Geng. "A method of estimating varietal stability for data of long-term trials." Theoretical and Applied Genetics 71, no. 6 (1986): 810–14. http://dx.doi.org/10.1007/bf00276422.

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Hasan, Syed Sarfaraz, and Sanjeev Kumar. ""Identification of promising genotypes in varietal trials of sugarcane using deep learning "." Journal of Sugarcane Research 11, no. 2 (2021): 137–46. http://dx.doi.org/10.37580/jsr.2021.2.11.137-146.

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Chughtai, S., J. Fateh, M. Munawwar, and M. Hussain. "Participatory sorghum varietal evaluation and selection in Pakistan." Acta Agronomica Hungarica 55, no. 1 (2007): 19–26. http://dx.doi.org/10.1556/aagr.55.2007.1.3.

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A number of improved pipeline varieties of sorghum including PARC SS-1, PARC SS-2 and PARC Ss-15 were planted in various agro-ecological zones of Pakistan for 2 years (2004 and 2005). The participatory Mother-Baby Trial methodology was used for the first time in Pakistan for varietal evaluation and selection. Six varieties of sorghum were evaluated along with the local checks. In general, the pipeline varieties developed at the National Agricultural Research Centre had a yield advantage of 15 to 20% over the local checks and other improved varieties included in the trial. The farmers were invo

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OMANYA, G. O., E. WELTZIEN-RATTUNDE, D. SOGODOGO, et al. "PARTICIPATORY VARIETAL SELECTION WITH IMPROVED PEARL MILLET IN WEST AFRICA." Experimental Agriculture 43, no. 1 (2007): 5–19. http://dx.doi.org/10.1017/s0014479706004248.

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A reconnaissance survey and participatory varietal selection trials (PVS) were conducted in four major pearl millet-growing countries of the Sahel between 2001 and 2003. The studies aimed to identify farmers' preferences in improved pearl millet varieties, increase awareness, test new varieties and enhance farmers' access to the improved varieties. Farmers selected five out of 10 tested varieties, with preferred characteristics, namely, maturity cycles of 80–90 d in the Sahel and 90–100 d in the Sudanian agro-ecozones, acceptable grain yield, compact and long (30–100 cm) panicles, a large numb

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Preston, S. R., J. H. Simons, and B. R. Taylor. "The Choice of Groundnut (Arachis hypogaea) Varieties by Smallholders in South-east Tanzania. I. Observations on Different Varieties." Experimental Agriculture 22, no. 3 (1986): 269–78. http://dx.doi.org/10.1017/s0014479700014447.

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SUMMARYSmallholders in south-east Tanzania grow the groundnut Red Mwitunde (Arachis hypogaea ssp. hypogaea), a long-season variety with seed dormancy, although earlier maturing varieties with no seed dormancy (ssp. hypogaea and fastigiata) usually yielded better in trials, particularly when late sown. Small-seeded, short-season varieties established better in the field than Red Mwitunde and other large-seeded varieties, especially under moisture stress. Trials with selective fungicides to estimate yield losses from leafspots (mainly Cercosporidium personatum) and rust (Puccinia arachidis), joi

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Lazovic, Biljana, Mirjana Adakalic, and Milan Markovic. "Reproductive physiology and sexual compatibility of the Spanish olive variety ‘Arbequina’ cultivated in Montenegro." Spanish Journal of Agricultural Research 20, no. 2 (2022): e0802. http://dx.doi.org/10.5424/sjar/2022202-18609.

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Aim of study: One of the newly introduced olive varieties in Montenegro is the Spanish olive (Olea europaea L.) variety ‘Arbequina’. The aim of this work was to study the changes in the reproductive physiology of the cultivar 'Arbequina' in conditions of Montenegro. Area of study: Comparative experimental plots were established in two areas in Montenegro, the coastal region of Ulcinj and the inland region of Podgorica. Material and methods: The research was conducted at four experimental sites (UL1 and UL2 in Ulcinj; PG1 and PG2, in Podgorica) over four years. Flowering phenophases

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Skvortsova, Yu G., Т. I. Firsova, N. G. Chertkova, and G. A. Filenko. "The features of primary seed production of winter bread wheat." Grain Economy of Russia, no. 5 (October 30, 2020): 80–85. http://dx.doi.org/10.31367/2079-8725-2020-71-5-80-85.

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The current paper has presented the features of primary seed production of winter bread wheat in the Rostov region and highlighted the main methods of varietal renewal, which make it possible to obtain high-quality seed material with strict preservation of their purity, biological and productive traits, in the amounts that meet the needs of the farms. The purpose of the research was to organize primary seed production of new and commercial varieties of winter bread wheat, which allows maintaining varietal purity and providing the required number of seeds of higher reproductions. There have bee

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FLINTHAM, J. E., A. BÖRNER, A. J. WORLAND, and M. D. GALE. "Optimizing wheat grain yield: effects of Rht (gibberellin-insensitive) dwarfing genes." Journal of Agricultural Science 128, no. 1 (1997): 11–25. http://dx.doi.org/10.1017/s0021859696003942.

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Four sets of near-isogenic lines carrying different combinations of the alleles Rht-B1b, Rht-D1b and Rht-B1c for gibberellin-insensitive dwarfism in hexaploid wheat (Triticum aestivum L.) were compared with tall controls in a series of yield trials in eastern England and central Germany. In all four varietal backgrounds the effects of Rht-B1b and Rht-D1b were similar (plant height ≈ 86 and 83% of tall controls respectively) and in combination reduced plant height to c. 58%. The Rht-B1c allele caused more severe dwarfism (c. 50%) and, when combined with Rht-D1b, reduced plant height still furth

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Lacoste, Myrtille, Robert Williams, William Erskine, Harry Nesbitt, Luis Pereira, and Armandina Marçal. "Varietal Diffusion in Marginal Seed Systems: Participatory Trials Initiate Change in East Timor." Journal of Crop Improvement 26, no. 4 (2012): 468–88. http://dx.doi.org/10.1080/15427528.2011.651775.

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Yadav, Shubh Pravat Singh, Sujan Bhandari, Netra Ghimire, et al. "Varietal trials and yield components determining variation among okra varieties (Abelmoschus esculentus L.)." Journal of Agriculture and Applied Biology 4, no. 1 (2023): 28–38. http://dx.doi.org/10.11594/jaab.04.01.04.

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Yield analysis is necessary to test the overall performance of different okra varieties. For this, field experiments were performed during the summer season to assess the yield or production of different okra varieties under open field conditions. The experiment comprised four treatments with seven replicas in an RCBD. The treatments included four different varieties of okra: Arka Anamika, Chiranjeevi F1, Gunjan, and JK 1666. The experimental results showed that the average mean yield of four okra varieties was 98.30 gm per plant. Overall, it was further revealed that Arka Anamika gave the hig

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Yanyshina, A. A. "Peculiarities of propagation of varietal admixture of oilseed flax in sparse crops of fiber flax in the conditions of the North-Western region of the Russian Federation." Agrarian science 1, no. 10 (2023): 106–10. http://dx.doi.org/10.32634/0869-8155-2023-375-10-106-110.

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Relevance. In course of the varietal identification of fiber flax seeds lots produced in research institutions of the Russian Federation, plants atypical for the varieties tested were periodically identified. Their belonging to a mechanical varietal impurity (rogue) was confirmed, in some cases, by the results of the progeny check. The purpose of the work is to clarify the indicator of varietal purity of flax seeds of the categories «original seeds» (OS) and «elite seeds» (ES) in GOST R 52325-2005.Methods. Trials were carried out on sod-podzolic medium loamy soil in the Tver region. The study

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Pavithra, V., K. V. Ashalatha, B. Swathi, H. T. Vinay, and Shridhar Ragi. "Grouping of Disease Resistant Sorghum Genotypes Based on Cluster Analysis Multivariate Tool." International Journal of Environment and Climate Change 13, no. 9 (2023): 1843–49. http://dx.doi.org/10.9734/ijecc/2023/v13i92415.

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Sorghum ranks as the fifth leading cereal grain globally in terms of both production and cultivated area, following wheat, rice, maize, and barley. Disease incidence is a significant limiting factor for sorghum production, directly impacting crop yield. This study utilizes secondary data collected from the All India Co-ordinated Research Project (AICRP) on Sorghum, Dharwad Centre. A total of forty-four genotypes were assessed in Initial Advanced Hybrid Trials, and forty-three genotypes were evaluated in Varietal Trials to study disease incidence, specifically Downy mildew, Charcoal rot, and Ru

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Millawithanachchi, M. C., D. P. P. Liyanage, B. N. Samaranayake, and A. P. Bentota. "Assessment of agricultural biodiversity through participatory approach." Tropical Agriculturist 167, no. 1 (2019): 41–54. https://doi.org/10.4038/ta.v167i1.67.

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Agricultural biodiversity provides food, animal feed, fuel woods, shelter, medicine and cultural requirements and the aesthetic beauty for the life style of a particular community. Hence, knowledge on on-farm agricultural biodiversity is important in many aspects to determine the level of management required on biological resources for the better utilization and conservation for future use. Assessment of the agricultural biodiversity of three villages of Thanamalvila Divisional Secretariat, Mahaweva, Kahakurullanpellessa and Sooriyaara in Sri Lanka were carried out using participatory tools su

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Jestin, L. "Some aspects of adaptation and adaptability of barley in European conditions." Netherlands Journal of Agricultural Science 33, no. 3 (1985): 195–213. http://dx.doi.org/10.18174/njas.v33i3.16836.

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After a review of different approaches found in the literature to problems of adaptation and adaptability of barley, attention is paid to the ecophysiological reasons which may explain the recent extension of winter barley cultivation in NW Europe. A brief account is given of cooperative trials carried out in Europe to define spring barley varietal adaptability ("ESBAN" and "JESBT" trials). A general view of current statistical procedures to analyse adaptability and genotype environment interaction patterns is presented. Some indications are given of the use that the breeder can make of ecophy

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Kaliba, Aloyce R. M., Hugo Verkuijl, and Wilfred Mwangi. "Factors Affecting Adoption of Improved Maize Seeds and Use of Inorganic Fertilizer for Maize Production in the Intermediate and Lowland Zones of Tanzania." Journal of Agricultural and Applied Economics 32, no. 1 (2000): 35–47. http://dx.doi.org/10.1017/s1074070800027802.

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AbstractThis paper examines factors influencing the adoption of improved maize seeds and the use of inorganic fertilizer for maize production by farmers in the intermediate and lowland zones of Tanzania. The results indicate that availability of extension services, on-farm field trials, variety characteristics and rainfall were the most important factors that influenced the extent of adopting improved maize seeds and the use of inorganic fertilizer for maize production. Farmers preferred those varieties which minimize field loss rather than maximizing yields. Future research and extension poli

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Vergara, Georgina V., Sinath Srey, Rica Joy Flor, et al. "Enabling Adoption of Stress-Tolerant Rice Varieties and Associated Production Management Technologies by Smallholder Farmers in Cambodia." Asian Journal of Agriculture and Development 20, no. 1 (2023): 53–70. http://dx.doi.org/10.37801/ajad2023.20.1.4.

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Smallholder rice farmers in four target provinces surrounding Tonle Sap Lake in Cambodia face problems of crop failures and low yields due to biotic and abiotic factors and a lack of suitable seeds and technologies. This paper reviews the status of rice production in the four areas and discusses the approaches to foster wide-scale dissemination and adoption of high-yielding, stress-tolerant rice varieties (STRVs) with resistance to biotic factors and tolerance to drought or floods. Baseline and endline surveys were conducted as well as extensive linkages with stakeholders, capacitybuilding act

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Weerasinghe, W. D. P., A. P. Bentota, B. G. D. S. Weerasinghe, et al. "Bw312: A new high yielding early maturing red rice variety For general cultivation In Sri Lanka." Tropical Agriculturist 168, no. 3 (2020): 45–54. https://doi.org/10.4038/ta.v168i3.59.

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There is an increasing demand for high yielding rice varieties maturing within 85-90 days in Sri Lanka. In addition, availability of red rice varieties is limited in the short maturity duration group. A promising red rice variety was identified in the short duration rice variety improvement program at the Regional Rice Research and Development Center (RRRDC), Bombuwela. The advanced rice breeding line Bw 11-3403 was a superior line as it performed well in station yield trials and it was nominated for testing in National Coordinated Rice Varietal Trials (NCRVT), Variety Adaptability Trials (VAT

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Ramsey, A. Ford, and Roderick M. Rejesus. "Bayesian Hierarchical Models for Measuring Varietal Improvement in Tobacco Yield and Quality." Journal of Agricultural and Applied Economics 53, no. 4 (2021): 563–86. http://dx.doi.org/10.1017/aae.2021.25.

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AbstractWe measure the economic impact of varietal improvement and technological change in flue-cured tobacco across quantity (e.g., yield) and quality dimensions under a voluntary quality constraint. Since 1961, flue-cured tobacco breeders in the United States have been subject to the Minimum Standards Program that sets limits on acceptable quality characteristics for commercial tobacco varieties. We implement a Bayesian hierarchical model to measure the contribution of breeding efforts to changes in tobacco yields and quality between 1954 and 2017. The Bayesian model addresses limited data f

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Mikyška, A., V. Psota, and M. Hrabák. "Brewing trials with spring and winter barley varieties." Czech Journal of Food Sciences 30, No. 1 (2012): 27–34. http://dx.doi.org/10.17221/145/2010-cjfs.

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The effects of a set of barley varieties on the brewing process and quality of beer production intermediaries were studied in trial brews (40 l) prepared using the two-mash decoction process. The varieties included in the trial were selected based on the starch granule size distribution determined previously. A significant effect of the varieties on the saccharification time of both mashes was determined. The highest saccharification rate in brews was achieved with the variety Jersey; the saccharification time of the 1<sup>st</sup> and 2<sup>nd</sup> mash with the varie

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Titarenko, A. V., I. V. Rylkov, and U. A. Presnyakova. "The present set of winter bread wheat varieties in the Voronezh region according to their species." Grain Economy of Russia, no. 3 (July 9, 2020): 21–25. http://dx.doi.org/10.31367/2079-8725-2020-69-3-21-25.

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The current paper has presented the analysis of the structure of sown areas under winter bread wheat in the Voronezh region in 2016–2018, and there has been established a recent increase the share of the varieties lutescens L. In order to substantiate the present tendency, there have been also used the study results of the varietal set of the Eryshevsky State Varietal Plot of the Voronezh region. The field trials on the Plot to study winter bread wheat productivity were carried out according to the Method of the State Variety Testing for Agricultural Crops (1989), grain quality was estimated b

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Barnwal, Manoj Kumar, Ajay Kumar, Naresh Prasad Yadav, Arjun Kumar Agarwal, Nalini Asur, and Binay Kumar Agarwal. "Epidemiological Evaluation and Varietal Screening of Alternaria Blight of Linseed." Journal of Scientific Research and Reports 31, no. 2 (2025): 443–53. https://doi.org/10.9734/jsrr/2025/v31i22865.

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Linseed (Linum usitatissimum L.) is a crucial oilseed crop with significant economic and health implications. The study investigated the impact of sowing dates and environmental factors on Alternaria blight disease development and grain yield. Field trials were conducted during the Rabi season 2022-23 at Birsa Agricultural University, Ranchi, using the linseed variety ‘T 397’. Sowing dates were staggered at seven days interval from 4th November to 16th December, and subsequently disease severity and environmental parameters recorded. Early sowing on 4th November resulted in the lowest disease

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B, Swathi, Rajasekhar Y, Sreenivas G, Srinivas Rao M, Sandhya Rani Y, and Chitti Babu G. "Evaluation of Roselle (Hibiscus sabdariffa L.) Varietal Responses to Foot and Stem Rot Caused by Phytophthora parasitica var. sabdariffae." Archives of Current Research International 25, no. 2 (2025): 288–94. https://doi.org/10.9734/acri/2025/v25i21086.

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Mesta or Roselle (Hibiscus sabdariffa L.) is one of the most important commercial fibre crops after Cotton and Jute. Foot and stem rot is one of the major devastating diseases affecting mesta plants caused by the fungus Phytophthora parasitica var. sabdariffae. Field trials were conducted at the Agricultural Research Station, Amadalavalasa for two consecutive years during Kharif 2022-23 and 2023-24 to evaluate Advanced Varietal Trial (AVT) entries against foot and stem rot in roselle under sick plot conditions. Same Six set of entries were screened under Advanced Varietal Trial (AVT I) during

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Hassan, Syed I. U., Arifa Khan, Rana A. Iqbal, et al. "Evolution of an indigenously developed climate-resilient potato variety “Kashmir” in Punjab, Pakistan." International Journal of Agricultural Extension 12, no. 2 (2024): 173–81. https://doi.org/10.33687/ijae.012.002.5198.

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Climate change significantly challenges agriculture, impacting crop yields, water availability, pest attacks and soil health. Adaptation strategies like crop diversification, efficient mode of irrigation, and resilient crop varieties are the solution. In Pakistan, potato, a major food as well as cash crops, face climate change-related threats. “Kashmir” a high-yielding, early bulking, frost, and disease tolerant potato (Solanum tuberosum L.). variety was developed at the Potato Research Institute, Sahiwal, Pakistan. This is the result of a cross “FD 35-36 x SH-5” attempted at Potato Breeding S

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Kornacki, Andrzej, and Andrzej Bochniak. "The use of outlier detection methods in the log-normal distribution for the identification of atypical varietal experiments." Biometrical Letters 52, no. 2 (2015): 75–84. http://dx.doi.org/10.1515/bile-2015-0007.

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Abstract In this study the Akaike information criterion for detecting outliers in a log-normal distribution is used. Theoretical results were applied to the identification of atypical varietal trials. This is an alternative to the tolerance interval method. Detection of outliers with the help of the Akaike information criterion represents an alternative to the method of testing hypotheses. This approach does not depend on the level of significance adopted by the investigator. It also does not lead to the masking effect of outliers.

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Raper, Tyson B., Derrick M. Oosterhuis, and Edward M. Barnes. "In-Season Cotton Drought-Stress Quantification: Previous Approaches and Future Directions." Journal of Cotton Science 20, no. 3 (2016): 179–94. http://dx.doi.org/10.56454/tbkp2320.

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Cotton producers in the Mid-South and southeastern regions of the U.S. have two approaches to manage drought stress: irrigate or plant drought-tolerant cultivars. Still, timing irrigations and defining the amount to be applied have been challenging in humid regions. Additionally, little information is available on varietal drought tolerance. An index capable of quantifying drought stress at a given location could be used to compile yield responses across variety trials to give robust insight into varietal drought tolerance and define irrigation thresholds for irrigated fields or provide inform

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Soretire, Adeniyi, Olalekan Sakariyawo, Oyinkansola Yewande, et al. "Changes in microbial biomass and grain yield of rice varieties in response to the alternate wet and dry water regime in the inland valley of derived savanna." Journal of Agricultural Sciences, Belgrade 64, no. 3 (2019): 239–53. http://dx.doi.org/10.2298/jas1903239s.

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This investigation tested the hypothesis that the alternate wet and dry (AWD) water regime would increase soil microbial biomass carbon (MBC), microbial biomass nitrogen (MBN) and microbial count. Variations in MBC, MBN and grain yield could be due to varietal differences in a derived savanna. Experiments (both pot and field ones) were conducted at the Federal University of Agriculture, Abeokuta (Latitude 7? 12? to 7? 20? N and Longitude 3? 20? to 3? 28? E), Nigeria in 2015. In both trials, the treatments consisted of water regimes (continuous flooding [control] and AWD imposed on lowland rice

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van Etten, Jacob, Kauê de Sousa, Amílcar Aguilar, et al. "Crop variety management for climate adaptation supported by citizen science." Proceedings of the National Academy of Sciences 116, no. 10 (2019): 4194–99. http://dx.doi.org/10.1073/pnas.1813720116.

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Crop adaptation to climate change requires accelerated crop variety introduction accompanied by recommendations to help farmers match the best variety with their field contexts. Existing approaches to generate these recommendations lack scalability and predictivity in marginal production environments. We tested if crowdsourced citizen science can address this challenge, producing empirical data across geographic space that, in aggregate, can characterize varietal climatic responses. We present the results of 12,409 farmer-managed experimental plots of common bean (Phaseolus vulgarisL.) in Nica

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