Phosphorus-use efficiency of cassava/maize/egusi-melon and economics of phosphorus fertilizer application on Alfisols of Ekiti State, South-Western Nigeria

被引:0
作者
Oluleye, Anthony K. [1 ]
Akinrinde, Ezekiel A. [1 ]
机构
[1] Univ Ibadan, Dept Agron, Ibadan, Nigeria
来源
JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT | 2010年 / 8卷 / 02期
关键词
Cassava-based crop mixtures; fertilizer-use efficiency; organo-mineral fertilizer; partial budget analysis;
D O I
暂无
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Potentials of rock phosphate (PR) and PR-fortified organic wastes (OW) as fertilizers are currently being explored. Three-year investigation was conducted on two Alfisols in South-Western Nigeria to evaluate their effects on P-Use Efficiency (PUE) and P balance (PB) in cassava/maize/egusi-melon mixtures. Melon/maize were planted @20,000 plants ha(-1) and cassava @ 10,000 plants ha(-1) (1(st) year) but maize was @20,000; 25,000 and 35,555 plants ha(-1) in 2(nd) and 3(rd) years. PUE decreased with increased fertilizer rates while PB was highest in PR plots. Yields with PR were higher than those of other treatments and partial budget analysis indicated higher marginal rate of returns for PR treatment (10.1) than for OW (5.1) relative to SSP. PUE for PR and OMF were higher than for SSP, confirming that these materials could be substituted for SSP in cassava/maize/melon mixtures in the experimental locations.
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页码:594 / 598
页数:5
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