Resultados de búsqueda - "field experiment"

Yield stability of selected rice breeding lines and donors across conditions of mild to moderately severe drought stress por Torres, Rolando O., Henry, Amelia

“…Although mild to moderately severe drought stress may have less of an effect on rice grain yield than severe drought stress during reproductive stage, its prevalence across rice farmers’ fields at the global level may be more economically significant. In this study, field experiments were conducted on selected genotypes with known tolerance to severe reproductive-stage drought in order to identify those that would produce high and stable grain yield across seasons and soil moisture conditions varying from well-watered to mild and moderately severe drought stress. …”
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Effects of planting pattern and cultivar on weed and crop growth in aerobic rice system por Mahajan, Gulshan, Chauhan, Bhagirath S.

Materias: “…field experimentation…”
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Physiological and biochemical characterization of NERICA-L-44: a novel source of heat tolerance at the vegetative and reproductive stages in rice por Bahuguna, Rajeev N., Jha, Jyoti, Pal, Madan, Shah, Divya, Lawas, Lovely M.F., Khetarpal, Sangeetha, Jagadish, Krishna S.V.

“…Hence, to identify and characterize novel heat‐tolerant donors for both the vegetative and reproductive stages, 71 rice accessions, including approximately 75% New Rice for Africa (NERICAs), were phenotyped across field experiments during summer seasons in Delhi, India, and in a controlled environment study at International Rice Research Institute, Philippines. …”
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Yield and phosphorus transformations in a rice-wheat system with crop residue and phosphorus management por Gupta, R.K., Yadvinder-Singh, Ladha, J.K., Bijay-Singh, Singh, Jagmohan, Singh, Gurpreet, Pathak, H.

“…Deterioration of soil and air quality due to straw burning is also a concern. Field experiments were conducted to determine the effects of straw and P management strategies on yield, P balance, and P transformations in soil in a rice–wheat system. …”
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Combining field and simulation studies to improve fertilizer recommendations for irrigated rice in Burkina Faso por Segda, Z., Haefele, S.M., Wopereis, M. C. S., Sedogo, M.P., Guinko, S.

“…Development of improved fertilizer recommendations entirely based on field experiments is time‐consuming and costly. We employed a combination of two simulation models and selected field data to develop alternative fertilizer recommendations (AFR) for irrigated rice (Oryza sativa L.) in Bagré, Burkina Faso. …”
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Using leaf color charts to estimate leaf nitrogen status of rice por Yang, Woon-Ho, Peng, Shaobing, Huang, Jianliang, Sanico, Arnel L., Buresh, Roland J., Witt, Christian

“…The objectives of this study were to (i) compare three different types of LCC in estimating leaf N status, (ii) determine if specific leaf weight (SLW) affects the estimation of dry weight–based N concentration (Ndw) by LCC, and (iii) determine the relationship between LCC scores and SPAD values. Two field experiments were conducted in the Philippines with different N rates and cultivars grown during 2000 wet season and 2001 dry season. …”
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Nitrogen dynamics and balance in intensified rainfed lowland rice-based cropping systems por Tripathi, B.P., Ladha, J.K., Timsina, J., Pascua, S.R.

“…Such information is essential to improve the efficiency of N fertilizer, an input based on a nonrenewable energy resource and whose oxidized products pose hazards to human health and the environment. Field experiments at an experimental farm on an Inceptisol and in two farmers' fields, one with an Inceptisol and one with a Vertisol soil, quantified (i) NO‐3‐N and NH+4‐N in different soil layers in relation to water‐filled pore spaces (WFPS), (ii) N balance, and (iii) systems‐level N efficiencies in several cropping patterns. …”
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Possibility of Increasing Yield Potential of Rice By Reducing Panicle Height in the Canopy. II. Canopy Photosynthesis and Yield of Isogenic Lines por Setter, T.L., Conocono, EA, Egdane, JA

“…Effects of different panicle height in the canopy were evaluated in glasshouse and field experiments using isogenic lines with elongated upper internodes (EUI lines) from two cultivars. …”
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Genomic prediction of zinc-biofortification potential in rice gene bank accessions por Rakotondramanana, Mbolatantely, Tanaka, Ryokei, Pariasca-Tanaka, Juan, Stangoulis, James, Grenier, Cécile, Wissuwa, Matthias

“…Accessions from the aus sub-species had the highest predicted grain Zn concentrations and these were confirmed in additional field experiments, with one potential donor having more than twice the grain Zn compared to a local check variety. …”
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Stacking beneficial haplotypes from the Vavilov wheat collection to accelerate breeding for multiple disease resistance por Jingyang Tong, Tarekegn, Zerihun T., Jambuthenne, Dilani, Alahmad, Samir, Periyannan, Sambasivam, Lee T. Hickey, Dinglasan, Eric, Hayes, Ben

“…By adopting haplotype-based local genomic estimated breeding values, derived from an integrated set of 34,899 SNP and DArT markers, we established a novel haplotype catalogue for resistance to the six diseases in over 20 field experiments across Australia and Ethiopia. Haploblocks with high variances of haplotype effects in all environments were identified for three rusts, and pleiotropic haploblocks were identified for at least two diseases, with four haploblocks affecting all six diseases. …”
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Development and adaptation of RIICE tool for Cote d'Ivoire por Mathieu, Renaud, Dossou-Yoyo, Eliott, Holecz, Francisco, Murusegan, Deiveegan, Quicho, Emma, Satapathy, Sushree, Akpoffo, Marius, Gatti, Luca, Ouedraogo, Mathieu

“…The study leveraged multi-source remote sensing data, including Sentinel-1, Sentinel-2, PlanetScope, and SAOCOM, to improve the accuracy of rice area detection and yield predictions. Field experiments were conducted to calibrate and validate crop models, focusing on dominant rice varieties and their response to different fertilizer applications in irrigated ecosystems. …”
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Environmental impact and phenotypic stability in potato clones resistant to late blight Phytophthora infestans (Mont) de Bary, resilient to climate change in Peru por Gastelo, M., Bastos, C., Ortiz, R., Blas, R.

“…The clones were planted in three field experiments in the 2021–2022 growing season. Two experiments with and without late blight chemical control in Oxapampa and Huánuco and one experiment under normal conditions of a potato crop in El Mantaro, Junin, using randomized complete blocks with three replications. …”
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Physiological basis for yield differences in maize (Zea mays L.) under varying nitrogen rates and planting windows in the savannas of Nigeria por Ahmad, N.M.

“…This study aimed to determine the physiological basis of differential yield response of some maize varieties under varying level of nitrogen and different sowing windows in Guinea and Sudan savannas of Nigeria and identify stress surrogate traits for yield improvement in maize. Field experiments were conducted at Bayero University, Kano (11058`38.63892N, 80 25`7.01868E), altitude 451m above sea level in the Sudan savanna and Zaria (11.16050610N, 7.64535890E) in Northern Guinea Savanna. …”
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Identification of drought and heat tolerant tepary beans in a multi‐environment trial study por Barrera, Santos, Berny Mier y Teran, Jorge C., Aparicio, Johan, Diaz, Jairo, Leon, Rommel, Beebe, Stephen, Urrea, Carlos A., Gepts, Paul

“…To better understand the phenotypic response of tepary bean to drought and heat stress in multiple environments and trials and to select highly adapted tepary beans, we conducted two field experiments. In Experiment 1, we compared the adaptation to drought stress of tepary bean ( n = 10), common bean ( n = 10), and Lima bean ( Phaseolus lunatus L.; n = 9) by assessing the reduction in grain yield under terminal drought compared to well‐irrigated conditions in two California locations with arid summer conditions. …”
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Assessing yield stability of pearl millet and rice cropping systems across West Africa using long-term experiments and a modeling approach por Kouadio, Louis, Fraser, Kristina, Ibrahim, Ali, Saito, Kazuki, Dougbedji, Fatondji, Senthilkumar, Kalimuthu

“…Long-term field experiments (LTEs) provide invaluable insights into temporal yield patterns of agronomic interventions. …”
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Defending rice crop from blast disease in the context of climate change for food security in Nepal por Khadka, Ram Bahadur, Manandhar, Hira Kaji, Shrestha, Sundar, Acharya, Basistha, Sharma, Pratiksha, Baidya, Suraj, Luu, Van Schepler, Joshi, Krishna Dev

“…We reviewed 40 years of research and development on rice blast in Nepal, analysing historical weather patterns and mapping the incidence and severity of the disease across the country based on empirical observations and field experiments. Using historical data on rice blast incidence and climate information, we show that rice blast pressure is increasing intensively and changing weather patterns are becoming more favourable for rice blast epidemics. …”
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Assessing the multidimensional impacts of agroecological practices in Southeast Asia. A review por Blundo Canto, Genowefa, Kangogo, Daniel, Castella, Jean Christophe, Bienabe, Estelle, Fauzi, Dimas, Van Der Meer Simo, Alexander

“…Comparative land use studies and field experiments each constituted one-third of the research records, with both approaches focused on the plot level. …”
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Mitigating climate change impacts on West African rice yields: evaluating APSIM-ORYZA and management practices por Guidigan, M. L. G., Dossou-Yovo, E. R., Ra-danielson, A. M., Akpoti, Komlavi, Tapily, A., Iboko, M. P., Balogun, A. A.

“…This study assessed the impact of climate change on rice yield and evaluated management practices to reduce associated yield losses in the derived savannah agroecological zone of West Africa. Field experiments were conducted on 22 farmers' fields across two irrigated schemes in central Cote d'Ivoire. …”
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An intermediate wheatgrass model for APSIM next generation por Innes, P. J., Newell, M. T., Pembleton, K. G., Hayes, R. C., Radanielson, A. M.

“…Perennial cereals, for dual purpose grain and forage production, are being considered as an alternative to annual cereals in many grazing and cropping enterprises. Field experiments in NSW Australia and elsewhere have identified candidate species, such as intermediate wheatgrass and mountain rye, which produce both grain and biomass over a two-to-three year period. …”
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Evaluating sunn hemp as a dead-end trap crop for sustainable management of the legume pod borer (Lepidoptera: Crambidae) por Yule, Sopana, Srinivasan, Ramasamy, Othim, Stephen Tarmogin Omburo

“…In contrast, cowpea and lablab beans equally supported complete larval and pupal development without significant differences in developmental parameters, pupal weight, or sex ratio. Field experiments demonstrated that sunn hemp effectively reduced pest infestation relative to untreated controls, showing comparable efficacy to chemical treatments. …”
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