Journal of Food, Agriculture and Environment

Vol 9, Issue 3&4,2011
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Economical and biological yield of corn (Zea mays L.) as affected by nitrogen fertilization under different irrigation interstices


Mehdi Dahmardeh

Recieved Date: 2011-07-02, Accepted Date: 2011-09-26


The present study was conducted during one season at the experimental station of Sistan in the University of Zabol, Iran. The study goal was to evaluate the yield characters of maize cv. S. C. 704 in reaction to different rates of N (150, 200, 250 and 300 kg ha-1) at varying irrigation interstices (7, 9, 12 and 15 days). The highest seed yield was obtained under irrigation interval of 9 days but the highest biological yield under irrigation interval of 7 days. Increasing rates of nitrogen fertilization up to 300 kg ha-1 significantly increased all the studied parameters of corn yield. The highest value of harvest index was obtained under irrigation interval of 9 days but no significant difference was found if compared with irrigation interval of 7 days. Harvest index increased with increase of N fertilizer levels, the highest value of harvest index was obtained at 300 kg ha-1 but there was no significant difference with rate of 250 kg ha-1. Generally, yield of corn plants was decreased by prolixing the irrigation interstice to 15 days. The obtained data verified the important role of N fertilization and irrigation frequency for growth of maize plant.


Corn, nitrogen fertilizer, irrigation interstices, yield

Journal: Journal of Food, Agriculture and Environment
Year: 2011
Volume: 9
Issue: 3&4
Category: Agriculture
Pages: 472-474

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