Resultados de búsqueda - "field experiment"

Agronomic biofortification of genetically biofortified wheat genotypes with zinc, selenium, iodine, and iron under field conditions por Ram, Hari, Naeem, Asif, Rashid, Abdul, Kaur, Charanjeet, Ashraf, Muhammad Y., Sudeep Singh Malik, Aslam, Muhammad, Mavi, Gurvinder S., Yusuf Tutus, Yazici, Mustafa A., Govindan, Velu, Cakmak, Ismail

“…The effect of soil-applied Zn (at the rate of 50 kg ha−1 as ZnSO4·7H2O) and foliar-applied Zn (0.5% ZnSO4·7H2O), I (0.04% KIO3), Se (0.001% Na2SeO4), and a foliar cocktail (F-CT: combination of the above foliar solutions) on the grain concentrations of Zn, I, Se, and Fe of high-Zn wheat genotypes was investigated in field experiments over 2 years. The predominantly grown local wheat cultivars in both countries were also included as check cultivars. …”
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Addition of clay based soil ameliorants to light textured soils to reduce nutrient loss and increase crop productivity por Berthelsen, S., Noble, A.D., Ruaysoongnern, Sawaeng, Webb, M., Hengfu, H., Jiexiang, Y.

“…This paper reviews results from field experiments designed to assess the efficacy of bentonite (high-activity clay with a high CEC) additions on improving crop productivity and reducing nutrient loss. …”
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Response of maize to phosphorus in sole maize and maize-pigeonpea cropping system in semi-arid areas of Tanzania por Mkoma, A.

“…To address this gap, field experiments were carried out to establish phosphorus (P) fertilizer rates and identify the effective P source for semi-arid areas of Kongwa and Kiteto districts in a sole maize and maize-pigeonpea cropping system. …”
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Breeding early and extra-early maize for resistance to biotic and abiotic stresses in sub-Saharan Africa por Badu-Apraku, Baffour, Fakorede, M.A.B.

“…Products of the selection cycles and 14 experimental cultivars derived from them were evaluated in several field experiments. Under Striga grain yield improvement was 70.6 kg ha 1 (6.3%) cycle 1 for TZE-Y Pop DT STR and 352.5 kg ha 1 (58.0%) cycle 1 for TZE-W Pop DT STR. …”
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Mesophyll conductance modulates photosynthetic rate in cotton crops exposed to heat stress under field conditions por Mercado Álvarez, Kelly, Bertero, Héctor Daniel, Paytas, Marcelo Javier, Ploschuk, Edmundo L.

“…The objectives were to: i) test whether heat stress impacts during the reproductive stage on photosynthesis are due to instant temperature effects or to acclimation produced during the heat stress period, ii) evaluate the role of stomatal and mesophyll conductance on net photosynthetic rate and iii) identify possible interactions between heat stress and different source/sink ratios during the reproductive period. Two field experiments were carried out in 2016 (Exp. 1) and 2017 (Exp. 2). …”
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Temperature and growth regulator effects on growth and development of strawberry (Fragaria x ananassa Duch.) por Kirschbaum, Daniel Santiago

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Insådd fånggröda och vårplöjning por Aronsson, Erica

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Assessing the impact of high-input management for reducing soybean yield gaps on high-productivity farms por Di Mauro, Guido, Salvagiotti, Fernando, Gambin, Brenda L., Condori, Alicia Adelina, Gallo, Santiago, Pozzi, Ricardo, Boxler, Miguel, Rotundo, Jose Luis

“…We carried out 27 on-farm field experiments comparing a conventional management system versus a novel high-input treatment across the Central Pampas of Argentina. …”
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Morphological and physiological plasticity in seedlings of Araucaria angustifolia and Cabralea canjerana is related to plant establishment performance in the rainforest por Olguin, Flavia Y., Moretti, Ana Paula, Pinazo, Martin Alcides, Gortari, Fermín, Vera Bahima, José, Graciano, Corina

“…However, no studies that evaluate the degree of coincidence between plasticity indexes were applied in pot and field experiments. The aim of this work is to determine the importance of species acclimation and plasticity to the establishment of planted trees for rainforest restoration. …”
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Effect of organic amendment on soil carbon dynamics in agricultural ecosystems por Hamamoto, Toru

“…We conducted two field experiments using different organic amendments in sandy loam soils and loamy sand soils in Zambia. …”
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Efficiency of mineral and organic fertilizers across two continents por Hijbeek, Renske, Loon, Marloes P. van, ten Berge, Hein FM, Gram, Gil, Vonk, Wytse, Waldow, Luise, Ittersum, Martin K. van

“…Second, we compare the performance of mineral versus organic fertilizers for cereal cultivation on two continents (Europe and sub-Saharan Africa) based on large number of field experiments. Finally, we assess whether and how N-AE of mineral N fertilizer can be improved when combined with organic amendments. …”
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Combining manure with mineral N fertilizer maintains maize yields: evidence from four long-term experiments in Kenya por Laub, M., Corbeels, Marc, Ndungu, S.M., Mucheru-Muna, M., Mugendi, D., Necpalova, M., Broek, M. van de, Waswa, W., Vanlauwe, Bernard, Six, Johan

“…Objective To address this knowledge gap, this study analysed maize yield trends in four long-term (31–37 cropping seasons) field experiments in Kenya with contrasting soil textures and under different climates. …”
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Genome-wide association analysis of phenotypic traits in Bambara groundnut under drought-stressed and non-stressed conditions based on DArTseq SNP por Odesola, K.A., Olawuyi, O.J., Paliwal, R., Oyatomi, O., Abberton, M.

“…This study elucidates the associations between sequencing-based diversity array technology (DArTseq) and phenotypic character as well as differing indices related to drought tolerance in one hundred accessions of Bambara groundnut. Methods: The field experiments were conducted at IITA research stations in Kano and Ibadan between 2016 and 2018 planting seasons. …”
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Landscape and micronutrient fertilizer effect on agro-fortified wheat and teff grain nutrient concentration in Western Amhara por Manzeke-Kangara, Muneta G., Amede, Tilahun, Broadley, Martin R., Lark, R. Murray, Haefele, Stephan M., Alemayehu, Beamlaku, Amare, Tadele, Desta, Gizaw, Sida, Tesfaye S., Agegnehu, Getachew, Asrat, Tadesse G., Desta, Mesfin K., Tirfessa, Dereje, Mossa, Abdul W., Bailey, Elizabeth H., Wilson, Lolita, Gameda, Sam

“…Trotter) grown under different landscape positions and with different micronutrient fertilizer application methods in the western Amhara region of Ethiopia. Field experiments were established in three landscape positions at three sites, with five treatments falling into three broad categories: (1) nitrogen (N) fertilizer rate; (2) micronutrient fertilizer application method; (3) sole or co-application of Zn and Se fertilizer. …”
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A robust DayCent model calibration to assess the potential impact of integrated soil fertility management on maize yields, soil carbon stocks and greenhouse gas emissions in Kenya por Laub, M., Necpalova, M., Broek, M. van de, Corbeels, Marc, Ndungu, S.M., Muchere-Muna, M.W., Mugendi, D., Yegon, R., Waswa, W., Vanlauwe, Bernard, Six, J.

“…Here, we present a robust calibration of DayCent to simulate maize productivity under ISFM, using data from four long-term field experiments. The experimental treatments consisted of the addition of low- to high-quality organic resources to the soil, with and without mineral N fertilizer. …”
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Assessing the effects of plant density and nitrogen on millet yield in Southern Niger using the CERES‑millet model por Garba, M., Kamara, A.Y., Mohamed, A.M.L., Tofa, A.I., Mahamane, S.A., Salissou, H., Kapran, B.I., Abdoulaye, T., Garba, I.I.

“…Methods In this study, we calibrated and validated the CERES-Millet model using data from field experiments. Seasonal analysis (1984–2020) was carried out in 18 selected sites across the three agroecological zones (AEZs) to test the effects of plant density and N fertilization on grain yield. …”
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Modeling integrated soil fertility management for maize production in Kenya using a Bayesian calibration of the DayCent model por Laub, M., Necpalova, M., Van de Broek, M., Corbeels, M., Ndungu, S.M., Mucheru-Muna, M.W., Mugendi, D., Yegon, R., Waswa, W., Vanlauwe, B., Six, J.

“…Here, we present a Bayesian calibration of DayCent, using data from four long-term field experiments in Kenya in a leave-one-site-out cross-validation approach. …”
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Effect of organic and inorganic phosphate fertilizers and their combination on maize yield and phosphorus availability in a yellow earth in Myanmar por Aye, Tin Maung, Hedley, MJ, Loganathan, P, Lefroy, Rod D.B., Bolan, NS

“…The purpose of this study is to determine maize yield response to different forms of P fertilizers on an acidic (pH 4.9) P deficient (Olsen-P 8 mg kg-1) Yellow Earth (Acrisol) in Southern Shan State, Myanmar and to establish relationships between soil Olsen-P test values (0.5 M sodium bicarbonate extracted P) and maize yield. Field experiments were conducted during two cropping seasons. …”
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Millet nutrient use efficiency as affected by natural soil fertility, mineral fertilzer use and rainfall in the West African Sahel por Fofana, B., Wopereis, Marco C.S., Bationo, B. André, Breman, H., Mando, A.

“…Field experiments were designed to investigate the effectiveness of integrated soil fertility management (ISFM), comparing fertilizer use efficiency and its impact on millet, cultivated close to the homestead ( infields ) and away from the homestead ( outfields ). …”
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Remediation of soil acidification by form of nitrogen fertilizer on grass swards of Australia and Thailand por Armour, J. D., Berthelsen, S., Ruaysoongnern, Sawaeng

“…Subsoil acidity is often difficult to correct using conventional applications of liming products. Field experiments with pastures on Acrisols in Northeast Australia (two sites) and Northeast Thailand (one site) compared the rates of alkalisation or acidification from N applied as nitrate or as urea (Australia) or ammonium sulphate (Thailand). …”
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