Influence Of Moisture Conserving Polymer And Integrated Nutrient Management On Productivity Of Wheat Triticum Aestivum L Under Limited Irrigated Condition

Abstract

A field experiment was carried out at Students Instructional Farm, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (U.P.) during Rabi season of 2020-21 and 2021-22 to study the Influence of moisture conserving polymer and integrated nutrient management on productivity of wheat (Triticum aestivum L.) under limited irrigated condition . The experiment comprised of twenty four treatment combinations in split plot design with three replications. Experiment consisted of three irrigation schedules viz. One irrigation at CRI stage, two irrigations at CRI and late jointing stage, and three irrigations at CRI, booting and milking stage, in main plots, two moisture conservation practices viz. Pusa hydrogel 5 kg ha-1 and paddy straw mulch 5 t ha-1 in sub plots and four nutrient management practices viz. 100% RDF, 100% RDF + Azotobacter, 75% RDF + Azotobacter + FYM 5 t ha-1 and 75% RDF + Azotobacter + FYM 5 t ha-1 + ZnSO4 20 kg ha-1 were kept in sub-sub plots. Experiment resulted that, growth parameters such as plant height, number of tillers, fresh weight of plant, dry weight of plant and crop growth rate and yield attributes such as length of spike, number of spike, number of spikelet spike-1, number of grains spike-1, weight of spike, weight of grain spike-1, test weight, grain and straw yield were significantly higher recorded in three irrigation schedules followed by two irrigation schedules. In moisture conservation practices same all parameters as given above and higher water use efficiency was recorded significantly higher in the application of Pusa hydrogel 5 kg ha-1 than paddy straw mulch 5 t ha-1. Among the integrated nutrient management practices, same parameters as above given were recorded significantly higher with the application of 75% RDF + Azotobacter + FYM 5 t ha-1 + ZnSO4 20 kg ha-1, which followed by 75% RDF + Azotobacter + FYM 5 t ha-1 treatment. The higher net return and benefit cost (B:C) ratio were recorded in the combination of three irrigations, Pusa hydrogel 5 kg ha-1 and 100