Resultados de búsqueda - "field experiment"

Landform and phosphorus effects on nitrogen fixed by annual clovers and its contribution to succeeding cereals in the Ethiopian highlands por Haque, I., Lupwayi, N.Z.

“…The effects of soil drainage and P supply on N fixation by annual trifolium species and their residual value to succeeding crops was investigated in field experiments on Vertisols at Addis Ababa and Ginchi. …”
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Management of Meloidogyne incognita in yambased cropping systems with cover crops por Claudius-Cole, A.O., Fawole, B., Asiedu, Robert, Coyne, Danny L.

“…From both pot and field experiments, nonematode damage was observed on yam tubers that were intercropped with Aeschynomene histrix,Crotolaria juncea, and Tagetes erecta. …”
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Yield effects of tissue culture bananas in Kenya: accounting for selection bias and the role of complementary inputs por Kabunga, N., Dubois, T., Qaim, M.

“…TC banana plantlets, which are free from pests and diseases, have been introduced in East Africa since the late 1990s. Although field experiments show significant yield advantages over traditional banana suckers, a rigorous assessment of impacts in farmers’ fields is still outstanding. …”
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Advanced plant disease diagnostic training: an international short course por Miller, S.A., Lapaire Harmon, C., Arévalo, M., Beed, Fenton D., Kinyua, Z.M., Tolin, S.A., Xin, J.

“…Lecture topics were supported by hands-on laboratory and field experiences. A two-day trip to the USDA Animal and Plant Health Inspection Service (APHIS) laboratories in Riverdale, MD, allowed participants to meet with APHIS researchers and learn about the structure and function of the organization. …”
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Effect of mound height and cassava cultivar on cassava performance under a fluctuating water table por Mohamoud, Y.

“…Field experiments were conducted at Ibadan and Bida in Nigeria, west Africa, to investigate the effect of mound height and cassava cultivar on cassava performance (tuber yield, top yield, tuber length, and plant height). …”
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Population simulation model of Sitophilus zeamais (Coleoptera: Curculionidae) in grain stores in West Africa por Meikle, W.G., Holst, N., Markham, R.H.

“…Simulation model output was compared with S. zeamais density observed in field experiments before and after the introduction of Prostephanus truncatus (Horn) to West Africa. …”
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Effect of plant density, spatial arrangement and plant type on weed control in cowpea and soybean: Conference Conference Proceedings of a conference held at the IITA, Ibadan, Niger... por Nangju, D.

“…Since herbicides are not widely used in cowpea and soybean at the present time, cultural and manual methods are important means of weed control in the tropics. Field experiments were conducted at Ibadan (in western Nigeria) to evaluate the effect of plant density, spatial arrangement and plant type on weed control in cowpea (Vigna unguiculata) and soybean. …”
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Predation of 'Aonidiella aurantii' (Maskell) crawlers by phytoseiids por Urbaneja, Alberto, Juan-Blasco, María, Verdú, María J.

“…On the other hand, T. phialatus and A. swirskii completed their development, from egg to adult preying exclusively on this prey. In the semi-field experiments, several doses of A. swirskii were tested. …”
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Genetic resources of Cedrela odorata L. and their efficient use in Mesoamerica por Navarro Pereira, C.M.

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Economic evaluation of different irrigation systems for wheat production in Rechna Doab, Pakistan por Bakhsh, A., Ashfaq, M., Hussain, M., Rasool, G., Haider, Z., Faraz, R.H.

“…These issues were the main factors affecting their land and water productivity. Field experiments were conducted at the above mentioned sites. …”
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Do grassroots interventions relax behavioural constraints and improve adoption of nutrition-sensitive food production systems? por Alvi, Muzna, Ward, Patrick S., Makhija, Simrin, Spielman, David J.

“…In Odisha, India, using a series of laboratory‐in‐field experiments and survey instruments to elicit farmers' preferences for risk, agency and aspirations for themselves and their children, we find that respondents in villages where grassroots interventions were promoted showed significantly lower levels of risk aversion and higher aspirations for themselves and their children, along with improvements in production and consumption diversity. …”
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RIICE development in Cote d’Ivoire : AfricaRice report of 2024. Transforming Agrifood Systems in West and Central Africa Initiative (TAFS-WCA) por Yéo Yassongui, Serge-Alin, Kouadio, Kouamé Serge Alain, Elliott, Dossou-Yovo, Ouedraogo, Mathieu, Singh, Manjari

“…This report details activities conducted by AfricaRice in 2024 related to the adaptation and implementation of the RIICE tool in Côte d'Ivoire through field experiments, georeferencing of rice fields, and the collection of leaf area index (LAI) data as well as feedback from stakeholders to ensure the tool is co-designed, responds to the local needs and that challenges related to infrastructure requirements and capacity building are addressed in the road for institutionalization. …”
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Assessment of the technical competence and ethical behaviour of community-based animal health workers in Mwingi District, Kenya por Rubyogo, Jean-Claude, Murithii, PM, Agumbah, G.J.O., Obhai, G

“…However, it was also found that some areas of the current curriculum required more detailed input based on field experience. The CAHW system could serve as an alternative animal health care system in areas lacking veterinary services.…”
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Farmer seed networks make a limited contribution to agriculture? Four common misconceptions por Coomes, O.T., McGuire, S.J., Garine, E., Caillon, S., McKey, D., Demeulenaere, E., Jarvis, D., Aistara, G., Barnaud, Adéline, Clouvel, P., Emperaire, L., Louafi, S., Martin, P., Massol, F., Pautasso, M., Violon, C., Wencelius, J.

“…We challenge these misconceptions by drawing upon recent research findings and the authors’ collective field experience in studying farmer seed systems in Africa, Europe, Latin America and Oceania. …”
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Mitigating CH4 and N2O emissions from intensive rice production systems in northern Vietnam: Efficiency of drainage patterns in combination with rice residue incorporation por Tariq, Azeem, Duong Vu, Quynh, Jensen, Lars Stoumann, Tourdonnet, Stephane de, Sander, Björn Ole, Wassmann, Reiner, Van Mai, Trinh, Neergaard, Andreas de

“…Greenhouse gas (GHG) mitigation strategies are often constrained by rice farmers’ preferences, therefore an assessment of mitigation strategies taking farmers’ constraints into consideration, are important for their pos- sible adoption. The field experiments were conducted for two continuous rice-growing seasons in northern Vietnam, to evaluate the effectiveness of drainage patterns on methane (CH4) and nitrous oxide (N2O) emissions under farmers’ variable conditions. …”
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Grain hordein content and malt quality as affected by foliar nitrogen fertilisation at heading por Prystupa, Pablo, Peton, Andrés, Pagano, Eduardo, Ferraris, Gustavo Nestor, Ventimiglia, Luis Alberto, Loewy, Tomas, Gómez, Federico, Gutierrez-Boem, Flavio Hernán

“…The objective of this study was to assess the effects of fertilisation on grain protein, the content and composition of hordeins, and relationship to malt quality. In 25 field experiments in the Argentine Pampas, the effect of foliar nitrogen fertilisation at heading on the grain protein content was evaluated. …”
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Razas fisiológicas más comunes de la roya Uromyces phaseoli var. phaseoli en Costa Rica y evaluación de la resistencia de algunos cultivares de frijol a la roya por Christen, R., Echandi, E.

“…Greenhouse and field experiments were conducted in order to determine the most prevalent physiologic races of bean rust (Uromyces phaseoli (Pers.) …”
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Population dynamics of Typhlodromalus limonicus from Colombia, an introduced predator of the exotic cassava green mite in West Africa por Rogg, H.W., Yaninek, John S.

“…The Colombian biotype of 33 limonicus was evaluated as a biological control agent in Nigeria and Bénin by assessing its population response to selected abiotic and biotic factors. In field experiments, 73 limonicus temporarily survived forca. 19 generations during wet and dry seasons. 73 limonicus population densities were negatively correlated with that of M. tanajoa suggesting its prédation potential on M. tanajoa. …”
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Determining fertilizer phosphorus requirement of upland rice por Sahrawat, K.L.

“…The parameters, U0, Up, and FPR were determined in field experiments for the rice cultivars grown on an Ultisol under rainfed upland conditions. …”
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Modeling the response of crop emergence to sowing depth and soil water deficit in direct-seeded rice por Kanno, Noriko, Kumar, Virender, Kato, Yoichiro

“…Methods We combined data from three field experiments and one growth chamber experiment to collect emergence data for four rice cultivars (Dontokoi, Dular, Rc222 and Rc420). …”
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