PJB-2018-1633
Impact of low-alternate furrow irrigation and zinc sulfate foliar application on grain yield and enrichment of sweet corn hybrids
Babak Peykarestan, Mehrdad Yarnia, Hamid Madani, Varahram Rashidi and Hossein Heidari Sharif Abad
Abstract
These experiments were carried out at the IAU research farm, Arak, Iran, in 2014 and 2015. Treatments involved two sweet corn (Zea mays L. convar cv.Chase and Chalenger) hybrid varieties and low water irrigation methods arranged in the main plots and zinc foliar application levels as factoraial in sub-plots. Irrigation (I) levels were complete furrows irrigation (CFI), fixed furrows irrigation (FFI), and alternating furrows irrigation (AFI) arranged in sub-plots and non-foliar application (control), application of Drop® Zinc sulfate (0.2%), Fast® zinc sulfate (0.2%). The results demonstrated the impact of irrigation methods, zinc spraying, hybrid plants and their interaction on the grain yield and other parameters was significant at the 1% probability level. The interactive effects of treatment indicated the highest canable grain yield in the AFI treatment with an application of zinc fast in the Challenger hybrid of 8873 kg.ha-1 had an increased yield of 45.03% compared to the least treatment. Most WUE (water use efficiency) in the AFI treatment with zinc fast application in the Challenger hybrid with a value of 0.62 kg.m-3 had twice the increase than in the least treatment. The highest grain zinc content in AFI and application of zinc fast in the Challenger hybrid had a 64.83% increase compared to the least treatment with a value of 28.22 mg.g-1. Based on the findings of this research, the application of zinc sulfate in the form of zinc fast with the AFI method decreased water consumption by 24% and caused the enrichment of grain zinc content of the Challenger hybrid by 64.83%, which is very necessary for fresh use, especially for the nutrition of children and teenagers.
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