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Assesses the performance of phosphate rock compared to other phosphates on cereals and feed crops, and the conditions under which it raises yield. Anayses its profitability.


Seyoum, E.McIntire, John M.[Etude bibliographique et analyse economique de l'effet des phosphates naturels sur certaines plantes cultivees de l'Afrique de l'Est]Etude bibliographique et analyse economique de l'effet des phosphates naturels sur certaines plantes cultivees de l'Afrique de l'Est

Examines fertilizer use in sub-saharan Africa, fertilizer response and economic returns and fertilizer subsidies with government budgetary constraints. Estimates fertilizer import demand.


McIntire, John M.[Constraints to fertilizer use in sub-Saharan Africa]Constraints to fertilizer use in sub-Saharan Africa

Outlines an economic evaluation of an improved surface drainage technology, using the broad-bed-maker (BBM) on-farm in four different vertisol areas of the Ethiopian highlands. Presents data on crops and number of areas covered for the on-farm drainage technology, on cost structure of the BBM, an...


Asamenew, G.Jutzi, S.C.Tedla, A.McIntire, John M.[Economic evaluation of improved vertisol drainage for food crop production in the Ethiopian highlands]Economic evaluation of improved vertisol drainage for food crop production in the Ethiopian highlands

Assesses the performance of phosphate rock compared to other phosphates on cereals and feed crops, and the conditions under which it raises yield. Anayses its profitability.


Seyoum, E.McIntire, John M.[Literature review and economic analysis of crop response to phosphate rocks in eastern Africa]Literature review and economic analysis of crop response to phosphate rocks in eastern Africa

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