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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.Sanders, J.H.Reddy, K.C.Baker, T.G.[Evaluating and adapting new technologies in a high-risk agricultural system - Niger]Evaluating and adapting new technologies in a high-risk agricultural system - Niger

Double-cropping of soybeans and wheat is often promoted by extension personnel. This paper seeks to explain how the decision to adopt double-cropping is made, using a Tobit regression model. Tobit makes use of more of the information in the data set than do logit or probit and explains not only t...


Shapiro, Barry I.Brorsen, B.W.Doster, D.H.[Adoption of double-cropping soybeans and wheat]Adoption of double-cropping soybeans and wheat

A study was conducted in two woredas, Addis Alem and Wolmera, to investigate (1) the level of farmers' awareness and adoption of recommended and demonstrated technologies; (2) the extent and intensity to which farmers have adopted these technologies; and (3) the objective and subjective factors a...


Yirga, C.Shapiro, Barry I.Demeke, M.[Factors influencing adoption of new wheat techniques in Wolmera and Addis Alem areas of Ethiopia]Factors influencing adoption of new wheat techniques in Wolmera and Addis Alem areas of Ethiopia

In semiarid West Africa, inorganic fertilizer use and sustainability objectives are complementary. With increasing population pressure and low levels of purchased inputs, crop yields in many regions are declining. Moderate use of inorganic fertilizer is required for increasing yields in a sustain...


Shapiro, Barry I.Sanders, J.H.[Fertilizer use in semiarid West Africa: Profitability and supporting policy]Fertilizer use in semiarid West Africa: Profitability and supporting policy

Per capita consumption of milk and meat products in developing Asia (including China) grew by 2.4 percent and 5 percent respectively between 1975-79 and 1990-94. This growth can be attributed to high growth rate in income and rapid urbanization. For Latin America, per capita milk and meat consump...


Ehui, Simeon K.Li Pun, H.H.Mares, V.Shapiro, Barry I.[The role of livestock in food security and environmental protection]The role of livestock in food security and environmental protection

This article proposes strategy for agricultural technology development for semi-arid West Africa. The strategy evaluation consists of two aspects: a) a review of the successes in the region; and b) analysis with mathematical programming of the potential impacts and constraints to various new tech...


Sanders, J.H.Shapiro, Barry I.Ramaswamy, S.[A strategy for technology development for semi-arid sub-Saharan Africa]A strategy for technology development for semi-arid sub-Saharan Africa

When shortages of dairy products became severe in Kenya early in 1992, prices of dairy products were de-controlled to improve the incentives to producers. The impact of that policy change is examined using the Policy Analysis Matrix (PAM) methodology. A case study of the marketing chain involving...


Staal, Steven J.Shapiro, Barry I.[The effects of recent price liberalization on Kenyan peri-urban dairy. A case study using the policy analysis matrix approach]The effects of recent price liberalization on Kenyan peri-urban dairy. A case study using the policy analysis matrix approach

Two critical factors that explain low crop productivity in the Sahelian agro-ecozone are inadequate moisture and poor soils, particularly phosphorus (P) deficiency. The purpose of this long-term study was to explore the use of both local phosphate rock (PR) and inorganic P on yields and risk of...


Yamoah, CFBationo, B. AndréShapiro, Barry I.Saidou, K[Use of rainfall indices to analyze the effects of phosphate rocks on millet in the Sahel]Use of rainfall indices to analyze the effects of phosphate rocks on millet in the Sahel

The ‘Mycoplasma mycoides cluster’ comprises the ruminant pathogens Mycoplasma mycoides subsp. mycoides the causative agent of contagious bovine pleuropneumonia (CBPP), Mycoplasma capricolum subsp. capripneumoniae the agent of contagious caprine pleuropneumonia (CCPP), Mycoplasma capricolum subsp....


Fischer, A.Shapiro, Barry I.Muriuki, C.Heller, M.Schnee, C.Bongcam-Rudloff, E.Frey, J.Jores, Joerg[The origin of the Mycoplasma mycoides cluster coincides with domestication of ruminants]The origin of the Mycoplasma mycoides cluster coincides with domestication of ruminants

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