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RESPONSE OF MAIZE TO NITROGEN FERTILIZER UNDER DIFFERENT IRRIGATION FREQUENCY | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 15, Issue 1, 2010, Pages 0-0 | ||
| Author | ||
| A. H. A. Almaeini | ||
| Abstract | ||
| This experiment was conducted to study the response of maize to nitrogen fertilizer under different irrigation frequency. Completely randomized block design was used with four replicates in split-plots experiment. The main plots included three irrigation treatments: water applied after each 5 to 7 days as a control, after each 10 to 14 days (double irrigation frequency) and alternate irrigation ones after each 5 to 7 days and once after each 10 to 14 days. Sub plots included four nitrogen rates (0, 100, 150, 200 Kg /ha1-) added in splits casting. The study results showed that nitrogen addition significantly increase growth and grain yield for all irrigation treatments specially 100 kg N / ha1-. The response to the highest rate of N applied (200 kg N / ha1-) occurred only with conventional irrigation method (control) and adding of 100 to 150 Kg / ha1- was sufficient under double irrigation period and alternate irrigation which gives the best growth and grain yield. Also results showed that adding 20–25 kg N / ha1- with each 75–100 mm water to the corn seems enough in similar condition of this study | ||
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