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DRIP-FERTIGATION – A MEANS FOR REDUCING FERTILIZER NITROGEN TO SUGARCANE

Published online by Cambridge University Press:  01 February 1999

K.F. Ng Kee Kwong ,
J.P. Paul  and
J. Deville
K.F. Ng Kee Kwong
Affiliation:
Mauritius Sugar Industry Research Institute, Réduit, Mauritius
J.P. Paul
Affiliation:
Mauritius Sugar Industry Research Institute, Réduit, Mauritius
J. Deville
Affiliation:
Mauritius Sugar Industry Research Institute, Réduit, Mauritius
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Abstract

The extent by which fertilizer nitrogen (N) may be reduced by the use of drip-fertigation in sugarcane was determined using 15N-labelled fertilizer in a field experiment in Mauritius. The data showed that, under the soil and climatic conditions that prevailed at the study site, fertilizer N could be reduced by 30%. Indeed, with 80 kg N ha−1 a−1 by drip-fertigation, total or fertilizer N recovered, growth pattern (as reflected by tiller density and leaf area development) and sugarcane yields were not inferior to those obtained with the standard practice of burying 120 kg N ha−1 a−1 along the cane rows. Applying more N than needed by the sugarcane in anticipation of a higher yield with drip irrigation would be wasteful of fertilizer N resources.

Type
Research Article
Information
Experimental Agriculture , Volume 35 , Issue 1 , February 1999 , pp. 31 - 37
Copyright
© 1999 Cambridge University Press

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