Singh, Vijay PalHanumant, Kalhapure Aniket2017-12-152017-12-152017-01http://krishikosh.egranth.ac.in/handle/1/5810037608A field investigation entitled “STUDIES ON NUTRIENT AND ROW SPACING MANAGEMENT UNDER DIFFERENT TILLAGE OPTIONS IN WHEAT (Triticum aestivum L.)” was conducted to study the performance of growth and yield of wheat to different options of tillage, nutrient and row spacing management at Norman E. Borlaug Crop Research Center of GB Pant University of Agriculture and Technology, Pantnagar during two consecutive rabi seasons of year 2014- 15 and 2015- 16. The experiment was laid out on silty loam soil in fixed plot for both the years with factorial strip plot design replicated thrice. Three tillage treatments viz. conventional tillage without chiseling, Chiseling followed by conventional tillage and Chiseling followed by rotavator were allocated to vertical main strip. Each vertical main strip was divided into two sub strips and two row spacing viz. 20cm and 15 cm were applied to them. Horizontal strip consist of three nutrient management treatments viz. recommended dose of fertilizer (RDF) NPK, RDF combined with application of FYM @ 15 t/ha and 125% RDF combined with FYM. Conventional tillage consists of two times disk harrowing whereas chiseling was done to the depth of 45cm with chisel plough. RDF applied for the crop was 150:60:40 kg/ha of NPK. The results of the experiment indicates that chiseling followed by either conventional tillage or rotavator produced significantly tallest plants, higher number of tillers, dry matter production, spike length, deeper root system, higher leaf chlorophyll content and NPK uptake by plant; which ultimately resulted into superior yield attributing characters and grain yield of wheat. All these growth and yield characters of wheat were recorded significantly higher in integrated application of 125% RDF along with FYM @15t/ha over rest of the treatments. Row spacing did not produced the significant effect on these parameters in wheat. Chiseling operation during the preparatory tillage and application of 125% RDF along with 15 t/ha FYM resulted in improvement in physico- chemical and biological properties of soil (viz. soil pH, organic carbon, available NPK content, dehydrogenage activity) along with higher input use efficiency and economic return.ennullThesis