RESTORING SOIL FERTILITY IN SUB - SAHARAN AFRICA : Technical and Economic Issues
نویسنده
چکیده
BACKGROUND: While recognizing the economic obstacles that currently block widespread use, many concerned with improving agricultural productivity and food security in Sub-Saharan Africa (SSA) are focusing on fertilizer as a remedy for declining soil quality and stagnant yields. Some have suggested that SSA needs to increase fertilizer use from 9 to at least 30 kg/ha during the next decade. Others fear that increased use will have undesirable environmental impacts (soil acidification, water pollution) that could outweigh the benefits. The evidence -both technical and economic -underlying these arguments needs to be understood by those designing policies to promote agricultural productivity and to reverse declining trends in SSA soil quality.
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تاریخ انتشار 1998