Analiza la potencialidad y los límites que tiene la propuesta de aumentar la producción en base a un incremento de la productividad de los predios lecheros; considera las características de la tecnología disponible; y expone el enfoque teórico y metodológico a utilizar, el cual implica la especif...
Many types of analysis require rainfall data, which must often be generated to overcome limitations in the historical record. The ability to model outlying rainfall years satisfactorily is particularly important in risk studies. We describe a rainfall generator with this ability, based on a third...
Jones, Peter G.
,
Thornton, Philip K.
,
[Spatial and temporal variability of rainfall related to a third-order Markov model]
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Spatial and temporal variability of rainfall related to a third-order Markov model
This paper undertakes an ex ante economic analysis of research on how resistance to trypanosomosis - a dominant livestock disease in Africa - can be maintained and enhanced while retaining and reinforcing characteristics of economic importance to farmers, and on how 'trypanotolerance' can be impa...
Falconi, C.A.
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Omamo, S.W.
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D'Ieteren, G.D.M.
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Iraqi, F.A.
,
[An ex ante economic and policy analysis of research on genetic resistance to livestock disease: Trypanosomiasis in Africa]
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An ex ante economic and policy analysis of research on genetic resistance to livestock disease: Trypanosomiasis in Africa
This study modeled the introduction of new early cultivars of millet and cowpea, higher cowpea densities, and various fertilization strategies. Model results were then compared with farmer behaviour before and after the availability of these new technologies. The model correctly identified the tw...
Shapiro, Barry I.
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Sanders, J.H.
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Reddy, K.C.
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Baker, T.G.
,
[Evaluating and adapting new technologies in a high-risk agricultural system - Niger]
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Evaluating and adapting new technologies in a high-risk agricultural system - Niger
Plant density and tiller cunts were done in several Sahelian rangelands in Mali, under a variety of soil, rainfall and grazing situations. Numeric models were developed to explain the dynamic relationship between grass tillering and herb density. Tests of application of these models to the plant ...
Hiernaux, Pierre H.Y.
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Leeuw, P.N. de
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Diarra, L.
,
[Modelling tillering of annual grasses as a function of plant density: Application to Sahelian rangelands productivity and dynamics]
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Modelling tillering of annual grasses as a function of plant density: Application to Sahelian rangelands productivity and dynamics
Examines the influence of breed, sex, live-weight and time & place of sale on small ruminant prices in six southwest Nigerian markets. Assesses the relationship of prices between markets and the degree of integration between them. Includes a brief description of the structure of small-ruminant ma...
Research dedicated to rare endemic plants is usually focused on one given aspect. However, holistic studies, addressing several key issues, might be more useful, supporting management programs, while unravelling basic knowledge about ecological and population level processes. A more comprehensive...
Silva, L.
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Furtado Dias, E.
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Sardos, J.
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Brito de Azevedo, E.
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Schafer, H.
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Moura, M.
,
[Towards a more holistic research approach to plant conservation: the case of rare plants on oceanic islands]
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Towards a more holistic research approach to plant conservation: the case of rare plants on oceanic islands
