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Evaluation of Fertilizer Placement Methods for White Yam (Dioscorea rotundata)

Published online by Cambridge University Press:  03 October 2008

S. C. O. Nwinyi  and
W. O. Enwezor
S. C. O. Nwinyi
Affiliation:
National Root Crops Research Institute, Umudike, PMB 1006, Umuahia, Nigeria
W. O. Enwezor
Affiliation:
National Root Crops Research Institute, Umudike, PMB 1006, Umuahia, Nigeria
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Summary

Four fertilizer placement methods (ring, sideband, broadcast and furrow) applied ten weeks after planting were compared in nine experiments to determine the best method for fertiliza- tion of white yam (Dioscorea rotundata). Significant yield differences due to the treatments were observed at Mbato, Umudike and Igbariam in 1980 and at Nsukka and Igbariam in 1981. Best yields overall were obtained with the sideband method, followed by broadcast, ring and furrow in that order. However, man-days taken to fertilize one hectare by ring, sideband, furrow and broadcast methods were 11.2, 10.9, 2.8 and 1.5, respectively, so that in this regard, broadcast is preferable to the other placement methods.

Type
Research Article
Information
Experimental Agriculture , Volume 21 , Issue 1 , January 1985 , pp. 73 - 78
Copyright
Copyright © Cambridge University Press 1985

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