Xu, Zhiying; Guan, Zhengfei; Jayne, Thomas S.; Black, J. Roy - Department of Agricultural, Food and Resource … - 2009
-ecological Zone IIA, a relatively high potential zone of Zambia, to determine the profitability of fertilizer use under a range of … proximity to roads and markets, substantially affected the profitability of fertilizer use on maize. Fertilizer use on maize …