Factors explaining the low and variable profitability of fertilizer application to maize in Zambia

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Input subsidy programs in sub-Saharan Africa: a synthesis of recent evidence

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Factors influencing the profitability of fertilizer use on maize in Zambia

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Soil quality and fertilizer use rates among smallholder farmers in western Kenya

(2009) Paswel P. Marenya et al.   AGRICULTURAL ECONOMICS

Smallholder market participation under transactions costs: Maize supply and fertilizer demand in Kenya

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Nitrogen use efficiency of 15N-labelled sheep manure and mineral fertiliser applied to microplots in long-term organic and conventional cropping systems

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