Effect of Tillage Practices and Fertility Levels on Growth, Yield Attributes and Yield of Wheat in Rice- Wheat Cropping System

Abstract

This study was conducted at Agronomy Research Farm, CSAUAT, during rabi 2021-22 and 2022-23. The experiment was laid out into Split plot design with3 replication. Two levels of tillage viz. (1) Conventional tillage Two ploughing followed by sowing), (2) Reduce tillage (one ploughing followed by sowing were randomly allotted to main plot while ten 10 fertility levels. Basis on the pooled data the results of the study revealed that in case of tillage practices among the growth parameters; maximum plant height at 30, 60, 90 DAT and at harvest is 26.25, 46.26, 87.43, and 92.38 cm respectively, number of leaves plant-1 at 30, 60, 90 DAT and at harvest is 5.47, 16.51, 19.34 and 20.18 respectively, leaf area index at 30, 60, 90 DAT and at harvest is 0.553, 3.13, 4.48 and 5.05 respectively, relative growth rate at 30, 60, 90 DAT is 24.33, 14.48 and 3.82 g day-1 respectively, among the yield attributing characters maximum ear length (11.07 cm) , number of grain ear-1 (41.08), grain weight ear-1 (1.54 g) and 1000 grain weight (36.93 g) and among the productivity parameters; maximum grain yield (51.31 q ha-1), straw yield (67.21 q ha-1), biological yield (118.52 q ha-1) and harvest index (43.22 %) were recorded under the conventional tillage. Similarly in case of fertility levels growth parameters, yield attributing characters and productivity parameters were associated with 125 % RDF + chloromequate chloride.