Effect of Rice Stubble and Irrigation Scheduling on Growth and Yield of Wheat Crop

A field experiment was conducted during the winter Rabi season of 2021 at Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar, in order to study the possibility of improving the growth and yield of wheat under the effect of rice stubble and irrigation scheduling. The experiment was laid out in split-plot design, having 5 main-plot treatment, viz., I₁, one irrigation at crown-root-initiation(CRI) stage; I₂, two irrigation at the CRI +booting stage; I₃, two irrigation at the CRI + milk stage; I₄, three irrigation at the CRI + late jointing +milk stage; I₅, four irrigation at the CRI + maximum tillering + flowering + dough stage and 3 subplot treatment, viz., R₁ (rice stubbles cut at a height of 5 cm); R₂ (rice stubbles cut at a height of 20 cm) and R₃ (rice stubbles cut at a height of 35 cm)with 3 replication. Resulted indicated that, the growth parameters and yield attributes viz., of plant height, number of tillers/mrl, no. of tillers/m², spike length, number of grains/ear, crop emergence (number of plants/m²), dry matter accumulation (g/m²) and crop growth rate (g/m²/day) were found to be maximum with I₅ irrigation level, which was significantly superior to I₁, I₂, and I₃ but statistically at par with I₄. 4 irrigations (I₅) and rice stubbles cut at a height of 20 cm (R₂) resulted in the highest growth and yield-attributing characters. The grain yield and straw yield were increased up to 4 irrigations (I₅). Treatment R₂ gave the highest grain and straw yields which was at par with R₁ treatment. The highest grain and straw yields were recorded with I₅R₂ treatment combination.