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ThesisItem Open Access Effect of nutrient management in sunflower under irrigated condition(Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, 2012-05-16) Tate, Ujjvala Ashok; Gajbhiye, B. R.A field experiment was conducted on effect of nutrient management in sunflower under irrigated condition during the year 2010-11 at Oilseed Research Station, Latur. The experiment was laid out in randomizes block design with twelve treatments and three replications. The results of field study indicated that the growth and yield of sunflower were significantly influenced by nutrient management. The growth parameters, yield attributes and yield of sunflower influenced due to increased in application of nutrient NPK from 50 per cent to 150 per cent of RDF and the application of 150 % RDF (90:45; 45 NPK kg ha'1) significantly improved all growth parameters viz; height, number of leaves, leaf area, stem girth, head diameter, 50 % flowering and total dry matter of plant, yield contributing characters viz; number of filled seeds per plant and seed yield per plant. Uptake of nutrients at harvest stage of sunflower significantly recorded higher due to application of 150 % RDF followed by 60 kg N + 30 kg P2O5 + 30 kg K2O ha'1. Oil content, oil yield, protein content and protein yield of sunflower was also increased with fertilizer dose 90: 45: 45 kg ha'1 followed by 60 kg N + 30 kg P2O5 + 30 kg K2O ha'1. Soil chemical properties and available nutrient status of soil after harvest of sunflower crop were also improved due to application of fertilizer dose 90; 45:45 kg ha'1. Application of 150 % RDF (90:45:45 NPK kg ha'1) significantly increased available micronutrient status in soil after harvest of sunflower crop. Higher balance of available nitrogen, phosphorus and potassium was observed due to application of 150 % RDF.ThesisItem Open Access Combining ability and heterosis studies in Desi cotton (Gossypium arboreum L.)(Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, 2012-05-16) Jondhale, Pranita Santram; Gajbhiye, B. R.The experiment was carried out on “Influence of microbial decomposers on quality of compost using crop residues” during the year 2011-2012 at College of Agriculture, Latur. The experiment was laid out in factorial randomized block design with three replications consisting of four levels of decomposer species ( T viride, T. harzianum, pseudomonas, commercial composting culture) and two levels of cereal crop residues (sugarcane trash and pigeon pea straw). The composting samples were collected at different stages and analyzed for its physical, chemical and biological properties. The results indicated that the quality of compost was significantly influenced by decomposer species and crop residues. The chemical properties like EC, N, P, K and micronutrients were found to be increased progressively throughout the composting of crop residues. However, C:N ratio, organic carbon and pH of all the treatments were decreased significantly during an experiment. Among various biological properties, CO2 evolution, population density/CFU of the decomposer, mycelial dry weight, growth rate and colony characteristics were increased vigorously with time Compost obtained from sugarcane trash was rich in macro and micro nutrients as compared to pigeon pea straw. The quality of compost obtained from decomposer species Tricoderma viride was superior to all other decomposers.ThesisItem Open Access Nitrogen fractionation in relation to physico-chemical properties of soil from Ambajogai Tahsil of Beed district(Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, 2012-05-16) Jogdanad, Disha Jagannathrao; Dhamak, A. L.The present investigation was carried out to study the nitrogen fractionation in relation to physico-chemical properties of soil from Ambajogai tahsil of Beed district. For this purpose 125 representative soil samples were collected from different villages of Ambajogai tahsil. These soil samples were analyzed for physicochemical properties and status of available P, K, S, exchangeable Ca, Mg and nitrogen fractions of soil. The soils under the study were neutral to alkaline in reaction, safe in limit of electrical conductivity and moderately calcareous to calcareous in nature. These soils were low to high in content of organic carbon. The soil samples were low in available P and high in available K. while The exchangeable Ca and available S were in sufficient quantity, while exchangeable Mg ranged from low to high. Available N was in low quantity, while total N and other fractions also in low quantity. The pH and CaCOs showed negative and significant correlation with all the fractions of nitrogen where as organic carbon showed positive and significant correlation with different fractions of nitrogen. However, EC of soil did not established any relation with nitrogen fractions.