Resultados de búsqueda - "marginalism"

Cassava agronomy research in Asia: Has it benefitted cassava farmers? por Howeler, Reinhardt H.

“…Yield stagnation or declines, inspite of widespread adoption of higher yielding varieties, is partly due to displacement of cassava to more marginal regions, and partly a result of the deterioration of the soil resources due to erosion and inadequate or unappropriate fertilizer use. …”
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Cassava breeding and agronomy research in Malaysia during the past 15 years por Tan, Swee Lian

“…Agronomy research has given attention to: (a) reduction of production costs, (b) maximization of profits, and (c) expansion of cassava production into marginal areas. Strategies to reduce costs include the use of machines in field operations to reduce labor requirements, especially for planting and harvesting; development of a computer software package to diagnose major nutrient insufficiencies and to recommend fertilizer rates instead of using blanket fertilizer rates; decreasing the fertilizer recommendations and frequency of application when growing the early variety MM 92 on drained peat. …”
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Pre-planting removal of host-plant residues to reduce African root and tuber scale infestations in cassava fields in Cameroon por Tindo, M., Hanna, R., Wijnans, L., Nolte, C., Goergen, Georg E., Nguekam, A., Ngeve, J.M.

“…We conducted an experiment in 18 farmer fields in two villages in the Forest Margins Benchmark Area of Cameroon to test the hypothesis that removal from fallows of known host-plant residues prior to field establishment will reduce subsequent ARTS infestation on cassava. …”
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An assessment of the potential efficiency and profitability of valueaddition and marketing innovations involving smallholder farmers under a pilot system in Tanzania por Abass, A., Abele, S., Mlingi, N., Rweyendela, V., Ndunguru, G.

“…Sourcing fresh cassava either on-farm or in the local market during the last quarter of the year was potentially difficult and very expensive. Trade margins of fresh cassava were significantly higher in markets with obvious scarcity, but relatively low in higher volume markets. …”
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Options for cogongrass ((Imperata cylindrica) control in white guinea yam (Dioscorea rotundata) and cassava (Manihot esculenta)1 por Chikoye, David, Ellis-Jones, J., Kormawa, P.M., Udensi, U.E., Ibana, S., Avav, T.

“…In both crops, hoeing alone or followed by sowing velvetbean was more costly than chemical control. The highest margin over hoeing was obtained from plots that received glyphosate alone. …”
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Uncovering the economic value of natural enemies and true costs of chemical insecticides to cotton farmers in China por Huang, Jikun, Zhou, Ke, Zhang, Wei, Deng, Xiangzheng, Werf, Wopke van der, Lu, Yanhui, Wu, Kongming, Rosegrant, Mark W.

“…Using insect sampling and household survey in an integrated bio-economic analysis framework, this paper studies farmers' crop management practices in cotton in the North China Plain, and estimates the marginal value of natural enemies and costs of chemical insecticides to farmers. …”
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Profitability of cassava production: comparing the actual and potential returns on investment among smallholders in southern Nigeria por Ojiako, I.A., Tarawali, G., Okechukwu, R.U., Chianu, J., Ezedinma, C.I., Edet, M.

“…Results revealed N277400 (about US$1,840) as the baseline gross revenue, but this could have risen by over 114% to N596000 (about US$3947), if farmers adopted the package of practices recommended under the project. The gross margin, calculated as N150536 (US$1003.57) could have increased by about 120% to N330536 (or US$2189). …”
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General contextual effects on neglected tropical disease risk in rural Kenya por Glanville, William A. de, Thomas, Lian F., Cook, Elizabeth A.J., Bronsvoort, B.M. de C., Wardrop, N., Wamae, C.N., Kariuki, S., Fèvre, Eric M.

“…The neglected tropical diseases (NTDs) are characterized by their tendency to cluster within groups of people, typically the poorest and most marginalized. Despite this, measures of clustering, such as within-group correlation or between-group heterogeneity, are rarely reported from community-based studies of NTD risk. …”
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Métodos y normas para evaluar el uso sostenible de los recursos suelo y agua en el trópico por Lal, Rattan

“…En estas regiones, la mayoría de la tierra potencialmente disponible es marginal, inaccesible o se encuentra en ecorregiones ecológicamente muy sensibles, tales como el bosque húmedo tropical, laderas con pendientes del 100% o más, o en regiones muy susceptibles a la desertificación.…”
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La cadena de cítricos en Colombia: una mirada global de su estructura y dinámica 1991 - 2005 por Ministerio de Agricultura y Desarrollo Rural - Observatorio Agrocadenas Colombia

“…Colombia es un actor marginal como productor de cítricos en el mundo, aunque su participación muestra una dinámica interesante en el contexto internacional. …”
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Manejo de agua en el cultivo de arroz bajo riego. por Palacio Saldarriaga, M.H.

“…Con esta práctica de manejo el requerimiento de agua fue 552.3 kg de agua/kg de materia seca, y se obtuvo la mayor tasa marginal de retorno, con un requerimiento de riego de 10.012 m3/ha cosecha y una eficiencia de uso de agua de 6.65 kg de grano/mm de agua…”
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Caracterización de la producción porcina en Colombia 1999

“…Esto perrnite establecer que la producciOn porcIcoia se puede dividir en dos grandes componentes: Ia explotación tradicional marginal no catalogabic corno actividad empresarial y Ia que podrIamos denominar Ia industria porcIcola. …”
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Simulación de sistemas de engorde de bovinos en pastoreo en el trópico húmedo de Costa Rica en función de carga animal, nivel de maleza suplementaria y época del año por Hernández Anguizola, José Daniel, Ramírez, Alberto, Pezo, Danilo, Villanueva, Cristóbal, Quiroz, Roberto

“…Another scenario evaluated was the effect of fluctuating prices on the purchase and sale of fattened cattle throughout the year. The maximum gross margin per animal was for February (US$ 621), the minimum for March (US$ 445), and the annual mean was US$ 544. …”
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Comportamiento financiero de la inversión en sistemas silvopastoriles en fincas ganaderas de Esparza, Costa Rica por Gobbi, José A., Casasola Coto, Francisco

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Influencia de la fertilización nitrogenada en la interferencia de Digitaria sanguinalis sobre maracuyá por Santos, B.M.

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Parken som guldgruva? : en studie av lokala aktörers syn på turism i Söderåsens nationalpark por Appelgren, Linn

Walking the tight rope of local conservation practices por Hussen, Mahamoud Hussein

“…Yet, although the community has strong norms of not killing wildlife, its conservation practices marginalize some subsections of the society. In addition, it does not have a legally recognized system of governance with formal rules that regulate the resource sustainably. …”
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Beech provenance trail in Sweden por Vanícek, Lukás

“…The aim of this manuscript was to distinguish the differences in growth and timber quality features between European beech (Fagus sylvatica L.) provenances at its natural northern European margin – in southern Sweden. Data was obtained from a provenance experiment established in 1995 in Rånna to evaluate the growth and timber quality features of 36 European beech provenances. …”
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Fruits of knowledge por Carlander, Fennia, Lothigius, Karin

“…The Kenyan mango production has increased during the last decade but due to market losses for the producer, the small-scale farmers‟ profits have not improved. The farmers' margins are low and losses of profit and produce strikes them hard. …”
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Svensk fartygsimport av fasta trädbaserade biobränslen – en explorativ studie por Olsson, Johan

“…Med rätt förutsättning torde det vara möjligt att importera även rundved som sönderdelas i Sverige med positiv marginal. Däremot är det inte lönsamt att använda sig av vanliga bulkfartyg för att importera stamvedsflis. …”
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