Resultados de búsqueda - "field experiment"

Reducing greenhouse gas emissions and grain arsenic and lead levels without compromising yield in organically produced rice por Faiz-ul Islam, Syed, Neergaard, Andreas de, Sander, Björn Ole, Jensen, Lars Stoumann, Wassmann, Reiner, Groenigen, Jan Willem van

“…This study tested the effect of early AWD (e-AWD) versus continuous flooding (CF) water management practices on grain yields, GHG emissions and grain arsenic levels in a split-plot field experiment with organic fertilisers under organic management. …”
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Influence of simultaneous intercropping of maize-bean with input of inorganic or organic fertilizer on growth, development, and dry matter partitioning to yield components of two l... por Suárez, Juan Carlos, Anzola, José Alexander, Contreras, Amara Tatiana, Salas, Dina Luz, Vanegas, José Iván, Urban, Milan Oldřich, Beebe, Stephen E., Rao, Idupulapati M.

“…A randomized complete block design (RCBD) with 3 replications was used in a nested trifactorial arrangement in split-plot scheme. The field experiment was conducted in two seasons under conditions of acid soils and high temperatures in the western Amazon region of Colombia. …”
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Innovative agroecological practices can restore degraded farmlands and revive crop yields por Ntamwira, Jules Bagula, Ocimati, Walter, Blomme, Guy, Lubobo, Antoine Kanyenga, Mwarabu Lolonga Pyame, Dieudonne, Dhed’a Djailo, Benoit

“…Restoration of degraded lands is crucial to prevent incursions into virgin and marginal lands. A field experiment was carried out over a four-year period on two degraded sites, to assess and compare the effect of the common practices of: (i) burning crop residues and weeds by resource-poor farmers (T1) and (ii) burning crop residues and weeds followed with application of manure and/or NPK as external inputs (T2) by resource-endowed farmers with (iii) an innovative agroecological package (T3) on soil physical, chemical and biological attributes, and crop yields. …”
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Women’s empowerment, agricultural extension, and digitalization: Disentangling information and role model effects in rural Uganda por Lecoutere, Els, Spielman, David J., Van Campenhout, Bjorn

“…We conduct a gendered field experiment among maize-farming households in eastern Uganda to test whether video-enabled extension messaging affects outcomes related to maize cultivation. …”
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Mix and manage: Cultivar mixtures can maintain yield under high wheat blast disease pressure por Krupnik, Timothy J., Md. Harun-Or-Rashid, Dinabandhu Pandit, Islam, Rabiul, Hossain, Md. Khaled, Cunha Fernandes, Jose Mauricio, Roy, Krishna Kanta, Kabir, Muhammad Rezaul, Stuerz, Sabine, Singh, Pawan Kumar, Faruq, Golam

“…During three cropping seasons, blast symptoms and yield were determined in a field experiment for the highly blast-susceptible variety BARI Gom 26, the moderately susceptible BARI Gom 30, the resistant BARI Gom 33, and seven mixture combinations of the three varieties using artificial inoculation to increase disease pressure. …”
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Effects of Intercropping ‘Orange-Fleshed’ Sweetpotato with Onion on the Level of Weevil Damage por Kapalamula, C.

“…Unavailability of acceptable improved varieties, high incidence of pests and diseases, and poor cultural practices are also the main causes of low yields. A field experiment was carried out in Dedza (Malawi) from April to November 2013 to assess the “effects of intercropping orange-fleshed sweetpotato with onion on the level of weevil damage” with the objectives of developing a biological efficient onion intercropping for orange-fleshed sweetpotato (OFSP) production and determining the agronomic productivity of the intercrop systems. …”
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Identification of drought tolerant inbred lines and assessment of combining ability in maize (Zea mays L.) por Shailaja, D.S., Lohithaswa, Hirenallur Chandappa, Sowmya, M. S., Mallana Gowdra Mallikarjuna, Banakara, Santhoshkumari, Likhithashree, T. R., Kirankumar, R., Basanagouda, G., Patne, Nagesh, Vivek, Bindiganavile S.

“…The analysis of variance in the pot and field experiments indicated significant genotypic differences among the inbreds and genotype × treatment interaction for different traits considered. …”
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Potential of conservation agriculture modules for energy conservation and sustainability of rice-based production systems of Indo-Gangetic Plain region por Nandan, Rajiv, Poonia, Shish Pal, Singh, Sati Shankar, Nath, Chaitanya Prasad, Kumar, Virender, Malik, Ram Kanwar, McDonald, Andrew, Hazra, Kali Krishna

“…The present study aimed to assess the different CA modules in rice-based cropping systems for energy conservation, energy productivity, and to define energy-economic relations. A field experiment consisted of four different tillage-based crop establishment practices (puddled-transplanted rice followed by (fb) conventional-till maize/wheat (CTTPR-CT), non-puddled transplanted ricefbzero-till maize/wheat (NPTPR-ZT), zero-till transplanted ricefbzero-till maize/wheat (ZTTPR-ZT), zero-till direct-seeded ricefbzero-till maize/wheat (ZTDSR-ZT)), with two residue management treatments (residue removal, residue retention) in rice–wheat and rice–maize rotations were evaluated for energy budgeting and energy-economic relations. …”
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Impact of conservation tillage in rice–based cropping systems on soil aggregation, carbon pools and nutrients por Nandan, Rajiv, Singh, Vikram, Singh, Sati Shankar, Kumar, Virender, Hazra, Kali Krishna, Nath, Chaitanya Prasad, Poonia, Shishpal, Malik, Ram Kanwar, Bhattacharyya, Ranjan, McDonald, Andrew

“…Consequently, crop productivity has declined over the years demonstrating the need for sustainable alternatives. Given that, a field experiment was conducted for six years to assess the impact of four tillage based crop establishment treatments [puddled transplant rice followed by conventional tillage in wheat/maize (CTTPR–CT), non–puddled transplant rice followed by zero–tillage in wheat/maize (NPTPR–ZT), zero–till transplant rice followed by zero–tillage in wheat/maize (ZTTPR–ZT), zero–tillage direct seeded rice followed by zero–tillage in wheat/maize (ZTDSR–ZT)], two residue management treatments [residue removal, residue retention (~33%)], and two cropping systems [rice–wheat, rice–maize] on soil aggregation, carbon pools, nutrient availability, and crop productivity. …”
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Nitrogen fertilizer fate after introducing maize and upland-rice into continuous paddy rice cropping systems por Fuhrmann, Irabella, He, Yao, Lehndorff, Eva, Brüggemann, Nicolas, Amelung, Wulf, Wassmann, Reiner, Siemens, Jan

“…To test these hypotheses, we traced the fate of a 15N-urea pulse in a field experiment in the Philippines with three different crop rotations: continuous paddy rice, paddy rice – dry rice, and paddy rice – maize for two years. …”
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Evaluation of long-term conservation agriculture and crop intensification in rice-wheat rotation of Indo-Gangetic Plains of South Asia: Carbon dynamics and productivity por Samal, S.K., Rao, K.K., Poonia, S.P., Kumar, Rakesh, Mishra, J.S., Prakash, Ved, Mondal, S., Dwivedi, S.K., Bhatt, B.P., Naik, Sushanta Kumar, Choubey, Anup Kumar, Kumar, V., Malik, R.K., McDonald, Andrew

“…In the context of deteriorating soil health, stagnation of yield in rice-wheat cropping system (RWCS) across Indo- Gangetic plains (IGP) and environmental pollution, a long term field experiment was conducted during 2009–2016 taking four crop scenarios with conservation agriculture (CA), crop intensification and diversified cropping as intervening technology aiming to evaluate the sustainability of the systems. …”
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Physical and chemical properties of a sandy loam soil under irrigated rice-wheat sequence in the Indo-Gangetic Plains of South Asia por Gathala, M.K., Jat, M.L., Saharawat, Y.S., Sharma, S.K., Yadvinder, S., Ladha, J.K.

“…There are, however, few studies on assessing the effect of RCTs on physical and chemical properties of soil under RWS. A field experiment on a sandy loam soil was conducted on RWS for two years at Modipuram, India involving six treatment combinations of three tillage and crop establishment methods in rice, (i) conventional puddled transplanted rice (CT-PTR), (ii) conventional dry tillage followed by direct seeding of rice (CT-DSR), and (iii) zero tillage followed by direct seeding of rice (ZT-DSR), and two green manuring options (with and without intercropping of Sesbania aculeata, -S or +S). …”
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Enhancing the productivity of high-magnesium soil and water resources in Central Asia through the application of phosphogypsum por Vyshpolsky, F.F., Qadir, Manzoor, Karimov, Akmal A., Mukhamedjanov, K., Bekbaev, U., Paroda, R., Aw-Hassan, Aden A., Karajeh, F.

“…In participation with the local farming community, we carried out a 4-year field experiment in Southern Kazakhstan to evaluate the effects of soil application of phosphogypsum?…”
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Cropping systems strategy for effective management of Fusarium wilt in safflower por Nageswara Rao V, Sastry RK, Craufurd, Peter Q., Meinke, Holger, Parsons, D., Rego TJ, Rathore A

“…In many parts of India intensive cultivation of safflower on Vertisols appears to have aggravated the problem of Fusarium wilt in safflower due to the soil borne fungus, Fusarium oxysporum Schlecht f. sp. carthami Klisiwiez and Houstan (FOC). In a long-term field experiment at Patancheru, India, we evaluated four diverse dryland cropping systems that each included safflower for their effectiveness in controlling Fusarium wilt in safflower. …”
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Response of chickpea (Cicer aritienum L.) to sulphur and zinc nutrients application and rhizobium inoculation in north western Ethiopia por Shewangizaw, B.

“…In an effort to find out possible correction, a field experiment was carried out on-farm, during 2016/17 growing season, at Gondar Zuria woreda in Tsion and Denzaz Kebeles to evaluate the effect of Rhizobium inoculation, S and Zn application on yield and yield parameters, nodulation, N and P uptake on chickpea. …”
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The critical period for grain yield in chia (Salvia hispanica) por Diez, Josefina, Anuch Tiranti, Juan Valentín, Sadras, Victor Oscar, Acreche, Martin Moises

“…The objective of this study was to determine the critical period for grain yield in chia. A field experiment was conducted under well-watered conditions during four growing seasons, using sequential shading periods of 7–10 days during the season. …”
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Thermal time and extreme weather events determine the emergence of Amaranthus palmeri por Ledda, Alejandra Rosa, Yanniccari, Marcos, Castro Franco, Mauricio, Sobrero, María T.

“…Objective: The work was aimed to detect the influence of meteorological variables and extreme weather events on the emergence of A. palmeri under field conditions. Methods: A field experiment was carried out in order to record seedling emergence of A. palmeri in two growing seasons, 2017/2018 (S1) and 2018/2019 (S2), in Argentina. …”
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Biomass Decomposition and Phosphorus Release from Residues of Cover Crops under No-Tillage por Varela, María Florencia, Barraco, Miriam Raquel, Gili, Adriana Anahí, Taboada, Miguel Angel, Rubio, Gerardo

“…The dynamics of biomass and P in CC residues was evaluated through the litterbag method during two annual periods in a long-term field experiment. Exponential decay models were fitted to each variable. …”
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Spectral indices from aerial images and their relationship with properties of a corn crop por Farrell, Mauricio Aníbal, Gili, Adriana Anahí, Noellemeyer, Elke

“…The purpose of the study was to calibrate different vegetation indices regarding their capacity to identify water and nitrogen availability for rainfed corn crops in the semiarid Pampas of Argentina. A field experiment with corn with a control without fertilization (N0), and fertilized with 120 kg ha−1 of nitrogen (N120) was used. …”
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Pollen‐mediated gene flow from a commercial potato cultivar to the wild relative S. chacoense Bitter under experimental field conditions in Argentina por Capurro, Mauricio Antonio, Camadro, Elsa Lucila, Masuelli, Ricardo Williams

Materias: “…Field Experimentation…”
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