Journal of Food, Agriculture and Environment
Vol 8,
Issue 2,2010
Online ISSN: 1459-0263
Print ISSN: 1459-0255
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Phosphorus-use efficiency of cassava/maize/egusi-melon and economics of phosphorus fertilizer application on Alfisols of Ekiti State, South-Western Nigeria
Author(s):
Anthony K. Oluleye,
Ezekiel A. Akinrinde *Recieved Date: 2010-01-12, Accepted Date: 2010-04-02
Abstract: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 (1st year) but maize was @ 20,000; 25,000 and 35,555 plants ha-1 in 2nd and 3rd 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.
Keywords:Cassava-based crop mixtures,
fertilizer-use efficiency, organo-mineral fertilizer, partial budget analysisJournal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 2
Category: Agriculture
Pages: 594-598
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