Resultados de búsqueda - "marginalism"

Impact of soil depth and topography on the effectiveness of conservation practices on discharge and soil loss in the Ethiopian Highlands por Akal, Adugnaw T., Dagnew, D.C., Belete, M.A., Tilahun, Seifu A., Mekuria, Wolde, Steenhuis, Tammo S.

“…The results show that conservation practices marginally decreased direct runoff in both watersheds and increased base flow in the Tikur-Wuha watershed. …”
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Factors affecting adoption of legume technologies and its impact on income of farmers: The case of Sinana and Ginir Woredas of Bale Zone por Tegegne, Y.

“…Impact assessment of the marginal effect showed that farmers who had adopted improved technology could enhance their annual total income level by 2.8% and the crop income particularly from grain legume has been increased by 41%. …”
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Measuring and modeling the water balance of low rainfall cropping systems por Whitbread, Anthony M., Hoffmann, M.P., Davoren, C.W., Mowat, D., Baldock, J.A.

“…Simulated (n = 46) wheat grain production resulted in a root mean square error (RMSE) of 492 kg ha-1, which is only marginally smaller than that of other field studies that derived soil water limits with less detailed methods. …”
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Signatures of positive selection in African Butana and Kenana dairy zebu cattle por Bahbahani, Hussain, Salim, B., Almathen, F., Al Enezi, F., Mwacharo, Joram M., Hanotte, Olivier H.

“…These regions span genes and quantitative trait loci (QTL) associated with biological pathways that are important for adaptation to marginal environments (e.g., immunity, reproduction and heat tolerance). …”
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Characterization of cocoa production, income diversification and shade tree management along a climate gradient in Ghana por Abdulai, Issaka, Jassogne, Laurence T.P., Graefe, Sophie, Asare, Richard, Asten, Piet J.A. van, Läderach, Peter R.D., Vaast, Philippe

“…The medium shade system was more abundant in the dry region and associated to adaptation to marginal climatic conditions. The low shade system showed significantly higher yield in the wet region but no difference was observed between the mid and dry regions. …”
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Unlocking the profit potentials of an innovation: a case study of IITA hybrid plantains and bananas por Faturoti, B., Emah, G., Isife, B., Tenkouano, A., Adeniji, T.A., Lemchi, J.

“…The respondents as a result of the technology recorded a high profit margin of N37, 063 extra intome per t,pctare. The regression analysis· revealed that only two variables, plantain and banana constraints identification and number of innovation adopted had preductive values for the IITA hybrids adoptien (R= 0.87). …”
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Consistent response of vegetation dynamics to recent climate change in tropical mountain regions por Krishnaswamy, J., John, R, Joseph, S.

“…During the same period we found increasing trends in temperature but only marginal change in precipitation. The amplitude of the annual greenness cycle increased with time, and was strongly associated with the observed increase in temperature amplitude. …”
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Transformation in Practice: A Review of Empirical Cases of Transformational Adaptation in Agriculture Under Climate Change por Vermeulen, Sonja J., Dinesh, Dhanush, Howden, S. Mark, Cramer, Laura K., Thornton, Philip K.

“…The concepts of transformative and transformational adaptation have emerged in recent years to address the need for major, non-marginal transitions in sectors, such as agriculture in response to climate change. …”
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Manual Técnico del Cultivo de Maíz Amarillo Duro por Barandiarán Gamarra, Miguel Ángel, Dirección de Desarrollo Tecnológico Agrario, DDTA

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¿Cómo fueron las respuestas en el perfil de nodulación y rendimiento de distintas cepas de Bradyrhizobios en etapa de selección en Cnel. Suárez? por Piccinetti, Carlos Fabian, De Sa Pereira, Eduardo

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Estudio ecofisiológico y de componentes de rendimiento del cacao (Theobroma cacao L) en la región de Guamal (Meta) por Iglesias Sánchez, Pablo

“…En el INTRODUCION Y OBJETIVOS último quinquenio se ha presentado LAn signific:ativo interés por el cacao que ha redundado en un mejoramiento de los cultivos y en la ampliación de la frcJntera caca□tera" Este auge se debe~ en iJarte, a la necesi.dad de diver·sifica1~ 1~ producción aqric□la, con el fin de mejorar la estabilidad de les pr□-· ductores de café de la zona marginal (p□r- det1ajo de los 1300 msnm) que vienen siendo afectados por· la aparici.ón de la r□va (Hemileia vastatrix), que ocasiona ataques severos a estas altitudes, y~ al interés de generar excedentes par·a la expo1~taAdemás, el cultivo del cacao ha sido j_ncluido dentro del Plan Nacional de Rehabilitación (PNR), del cual se espera~ para los próximos aN□s, resultados importantes eri las zonas social·· mente deprimidas.…”
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Long-term effects of shade and input levels on coffee yields in the Pacific region of Nicaragua por López-Sampson, Arlene, Sepúlveda, Norvin, Barrios, Mirna, Somarriba, Eduardo, Munguía, Rodolfo, Moraga, Pedro, Ponce, Alejandro, Orozco-Aguilar, Luis, Navarrete, Elvin, Navarrete, Ledis

“…Proper shading is claimed to be one of the most promising practices to seek sustainability and better adapt coffee cultivation to climate change in marginal areas. This study recorded and compared coffee cherry yields over a ten-year period from shaded coffee (N-fixing-trees and timber trees) agroforestry systems under different management regimes (conventional vs. organic) in a suboptimal site. …”
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Shade versus intensification: Trade-off or synergy for profitability in coffee agroforestry systems? por Lanza, Gracia, Mercado, Leida

“…Diversification, particularly with high-value export avocados, marginally improves NPV, while other forms of diversification have limited economic impact. …”
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El uso múltiple de los suelos en America Tropical; problemas y perspectivas por Salas, G. de las

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Evaluación de los recursos físicos y económicos para la programación del desarrollo en la unidad de suelos Orotina-Esparta, Costa Rica por Iporre Bellido, J.

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Analise económica da fazenda unitária de cacau Lolita por Lopes Neto, Augusto S.

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Predators of Plutella xylostella in Nicaragua : feeding capacity and potential role in biological control por Larsson, Linda

“…No differences in feeding capacity were found between individuals of predators, belonging to the same groups, collected in field margins and in cabbage fields.…”

Synergies and trade-offs between REDD+ pilot project and communities’ livelihoods : case study in Nepal por Cubo, Priscilla

“…A special attention has to be given to vulnerable groups (marginalized, women, Dalits, indigenous and poorer people) when providing capacity building and decision-making, so that REDD+ is considered an opportunity rather than an impairment.…”

Growth and timber quality evaluation of 33 European beech (Fagus sylvatica L.) provenances from a site in Southern Sweden por Bergkvist, John

“…This study aims to shed more light on the differences in growth and timber quality characteristics between European beech provenances at its northern distribution margin. Data was collected from a provenance trial established in 1998 in southern Sweden to determine the growth and development of 33 provenances of European beech (Fagus sylvatica L.) originating from within Europe. …”

Grönt perspektiv på planering! por Brink, Maria

“…The aim is to not neglect and marginalize the green as a background to houses and roads, but to highlight the green structures just as important as the others.…”
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