Response of Maize hybrids of contrasting duration to graded levels of Nitrogen

Author's Name: Sridhara.S, Santosh Kumar.T.V, Geetha.K.N, Suresh Naik.K.P & Krishnamurthy.N
Subject Area: Life Sciences
Subject Agricultural
Section Research Paper


Maize, Nitrogen, Hybrids, yield, yield components.


In order to study the effects of nitrogen graded levels on yield and yield components of maize hybrids, a field experiment was conducted at College of Agriculture, Navile, Shimoga during kharif 2012under rainfed conditions on sandy loam soil.The experiment was laid out in Factorial Randomized Complete Block Design with three replications. There were twelve treatment combinations comprised of two maize hybrids and six nitrogen levels. Results indicated that nitrogen levels had significant effects on yield and yield components of maize hybrids. Higher number of grains per cob, number of grains per row, cob length, plant height, total dry matter and LAI was recorded at the application of 250 kg N ha-1 and it was on par with application of 200 kg N ha-1. Among the differenthybrids, LDH recorded maximum plant height, number of grains rows per cob, cob length, number of grains per cob, test weight and grain yield compared to SDH. The interaction effect of maize hybrids and nitrogen levels found to be non-significant with respect to yield and yield parameters.

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