Xu, Zhiying; Guan, Zhengfei; Jayne, Thomas S.; Black, J. Roy - Department of Agricultural, Food and Resource … - 2009
Fertilizer use remains very low in most of Africa despite widespread agreement that much higher use rates are required for sustained agricultural productivity growth. This study estimates maize yield response functions in agro-ecological Zone IIA, a relatively high potential zone of Zambia, to...