Document Type : Research Paper



This experiment was carried out on the effect of deficit irrigation and zinc foliar application on chase and challenger sweet corn hybrids in Arak, Islamic Azad University, Agriculture Research Station as a split-plot factorial experiment based on randomized complete block design with three replications during 2014 and 2015. Different levels of water irrigation included full irrigation (control), every furrow irrigation and alternative furrow irrigation were measured assigned to main plot and foliar treatment included non-application of zinc (water sprayed (control), application of drop zinc sulfate (2/1000 lit. ha-1) and fast zinc sulfate (2/1000 lit. ha-1) and two sweet and super sweet corn hybrids by factors in sub plot. Results showed that irrigation patterns, application of the zinc and hybrids and their interaction were significant at 1% of probability in grain yield, grain protein, grain oil content, grain moisture content and proline content in leaves. The highest leaf proline content was observed in every furrow irrigation by 30.21 mg/g which it had 39.86% significant difference with full irrgiation by 21.60 mg/g. The highest grain content was observed in zinc fast foliar application by 28.50 mg/g, while in none zinc spray (control), this amount was reduced to 18.09 mg/g by 57.54% reducing. According to research, alternative irrigation and fast zinc spray on Challenger hybrid is recommendable in deficit water conditions.


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