Simranjit Singh2017-04-242017-04-242012http://krishikosh.egranth.ac.in/handle/1/5810010028A field experiment entitled, "Growth, yield and quality of soybean (Glycine max L. Merrill) as influenced by organic, inorganic and bio-fertilizers" was conducted at Punjab Agricultural University, Ludhiana during Kharif 2011. The soil of experimental site was loamy sand in texture having pH 7.3, low organic carbon, low in available nitrogen, medium in available phosphorus and medium in available potassium. The experiment included five nitrogen management treatments as main plots comprising control, recommended nitrogen (31.25kg N/ha), recommended nitrogen with Rhizobium, recommended nitrogen with FYM (10 tonnes/ha) and recommended nitrogen with FYM and Rhizobium, while four phosphorus management treatments were kept in sub plots comprising control, recommended phosphorus (60 kg P2O5/ha), 75 per cent recommended phosphorus (45 kg P2O5/ha) with phosphate solubilizing bacteria and 50 per cent recommended phosphorus (30 kg P2O5/ha) with phosphorus solubilizing bacteria. The experiment was laid in split plot design with three replications. Application of recommended nitrogen (31.25 kg N/ha) along with FYM and Rhizobium resulted in significantly higher seed yield of 21.4 q/ha but was statistically at par with treatments where nitrogen was applied along with either Rhizobium (19.6 q/ha) or FYM (19.2 q/ha). Among phosphorus management treatments, application of recommended phosphorus (60 kg P2O5/ha) recorded highest seed yield (20.5 q/ha) which was statistically at par with application of 75 per cent recommended phosphorus along with application phosphate solubilizing bacteria (20.1 q/ha), thereby resulting in 25 per cent saving of phosphorus. The nitrogen and phosphorus management treatments utilized higher amount of nitrogen and phosphorus recorded higher nodule count and weight, better growth (plant height, dry matter accumulation and leaf area index) and yield attributes (pods/plant) which was reflected in higher seed yield. The combined use of organic, inorganic and bio-fertilizers increased the microbial count and nutrient status of the soil. However, quality parameters like oil and protein content in seed were not affected significantly by any of nitrogen and phosphorus treatments. Interaction among different nitrogen and phosphorus treatments was also found to be significant for seed yield. Combination of recommended nitrogen along with Rhizobium and FYM and recommended phosphorus resulted in higher seed yield but remained statistically at par with application of recommended nitrogen with FYM, Rhizobium and 75 per cent recommended phosphorus along with phosphate solubilizing bacteria.ennullThesis