Fertilizer Impacts on Soils and Crops of Sub-Saharan Africa

Michigan State University, Department of Agricultural, Food, and Resource Economics, Food Security International Development Papers 01/1999;
Source: RePEc


This paper aims to summarize the rationale and objectives of the Crop Marketing Authority and the possible consequences of adopting the proposed legislation. We also identify where the proposal, in its current form, requires additional specificity in order to evaluate its ability to meet Government’s objectives of enhancing food security and sustainable crop marketing.

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    • "Numerous studies have shown that increasing fertilizeruse rates and the efficiency of its application can significantly increase agricultural yields. In an effort to increase fertilizer use, Ghana's Ministry of Food and Agriculture (MoFA) launched a fertilizer and seed subsidy program in 2008 (Yanggen et al. 1998; Weight and Kelly 1999; Ersado, Amacher, and Alwang 2003; Kyle 2004). Since then, the government of Ghana has continued the subsidy program with the objective of increasing fertilizer application rates to at least 20 kg/Ha by 2015 (Banful 2010). "
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    DESCRIPTION: Current maize yields in Ghana average only one-third of their estimated potential, but this yield gap can be reduced by intensifying the use of fertilizer and inputs. Recently, Ghana introduced a fertilizer subsidy program to help increase fertilizer-use rates, however, little work has been done to examine the viability of this program to increase yields in Ghana. This paper (1) determines the marginal effects of inorganic fertilizer on maize output, (2) determines the profitability of fertilizer at the subsidized and unsubsidized prices. We find that fertilizer use has a positive and significant effect on maize yields in all models that we consider; despite this positive correlation, however, we find that fertilizer is not sufficiently profitable for the average Ghanaian farmer to incentivize additional application.
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    ABSTRACT: The objectives of this paper are: to present in synthesis form key conclusions and recommendations of the FSRP/FAO-SFI studies on fertilizer profitability in Rwanda; and to incorporate information and comments obtained from participants in the December 15, 1999, MINAGRI Fertilizer Profitability Workshop conducted to present and validate the preliminary findings of the two studies.
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    ABSTRACT: One of the Government of Rwanda’s key post-war policy objectives has been to increase agricultural productivity and ensure food security by promoting a transition from semi-subsistence production and marketing practices to intensive production and highly commercialized agricultural markets. The government wants farmers to increase land and labor productivity through the use of modern inputs, thereby generating substantial surpluses which can be sold to pay for inputs and generate increases in farm incomes.
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