Response of wheat triticum aestivum l to tillage and nutrient management practices under rice wheat system in himalayan tarai

Abstract

Field experiments entitled Response of wheat (Triticum aestivum L.) to tillage and nutrient newlinemanagement practices under rice-wheat system in Himalayan tarai were conducted in the D-2 newlineblock of Norman E. Borlaug Crop Research Centre, G. B. Pant University of Agriculture and newlineTechnology, Pantnagar (Uttarakhand) during the rabi season of 2020-21 and 2021-22. The objectives of newlineinvestigation were to study the effect of tillage and nutrient management practices on the growth and newlineproductivity of wheat, nutritional and quality parameters, energy consumption and economics of newlinedifferent treatments. newlineThe experiment was laid out in a split-plot design with three replications. Treatments were newlineconsisted of three tillage practices viz. zero, reduced and conventional tillage and whereas, in sub-plots, newlinefive nutrient management practices viz. RDF (N 120:P2O5 60:K2O 40 kg/ha), RDF + FYM at5 t/ha, newlineRDF + ZnSO4 at25 kg/ha, 75% RDF + FYM at10 t/ha and 75% RDF + FYM at5 t/ha) + ZnSO4 at12.5 newlinekg/ha. newlineThe investigation revealed that tillage did not significantly influence growth parameters, yield newlineattributing characters and yield but economics was significantly influenced in both years of study. Zero newlinetillage recorded comparatively higher grain yield over reduced and conventional tillage practices. Zero newlinetillage recorded 10.25 % and 11.52% higher net returns than conventional tillage, in 2020-21 and 2021- newline22, respectively. The lowest energy competition was recorded under zero tillage as well as significantly newlinehigher net energy and energy efficiency was achieved by zero tillage over reduced and conventional newlinetillage in both years. newlineThere was a significant impact of nutrient management practices on various parameters. newlineAmong the nutrient management practices, NM5 treatment recorded significant response to all the newlinegrowth parameters at various growth stages which resulted in higher yield attributes (spike/m2, fertile newlinespikelets/spike and grain weight/spike), N, P, K and Zn, total uptake and net return compared to NM1, newlineNM2 and NM3. Significantly higher grain an