Effect of Crop Residue and Potassium Management Practices on Growth and Yield of Wheat (Triticum aestivum L.)

Abstract

An investigation was carried out at ICAR-Indian Agricultural Research Institute
(IARI), New Delhi during rabi seasons of 2020-21, with the objective to determine
better crop residue and potassium management practices for growth parameters and
their impact on yield of wheat. The experiment was laid out in split-plot design with
three replications having three residue management treatments in main plot and five
potassium management practices [Control (no application of fertilizer, (K1), 50% of
RDK (K2), 100% of RDK (K3), 50% of RDK (½ basal + ½ top dress at 25 DAS, (K4) and
100% RDK (½ basal + ½ top dress at 25 DAS), (K5)] in sub-plot. Results indicated that
the higher values of all the growth parameters, grain, straw yield and harvest index of
wheat was recorded with the crop residue retention @ 3t ha -1 with the split application
of 100% recommended dose of potassium (½ at basal + ½ top dress at 25 DAS).