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ThesisItem Restricted Effect of biofertilizers and organic fertilizers on soil health, growth and yield of green pea (Pisum sativum L.)(Punjab Agricultural University, Ludhiana, 2016) Harleen Kaur; Gosal, S.K.A field experiment was carried out to study the effect of biofertilizers and organic fertilizers on soil microbial dynamics, nutrient content of soil and plant, plant growth parameters and crop yield attributes. Significantly higher bacterial population (150 × 107 CFU/g of soil), PGPR population (218 ×105 CFU/g of soil) and soil dehydrogenase activity (2.291 μg TPF formed/g of soil/h) was observed in treatment having 50% FYM + 50% recommended dose of N and P +consortium biofertilizer while the maximum fungal population (20 ×103 CFU/g of soil), diazotrophic population (140 ×105 CFU/g of soil), PSB population (80 ×104 CFU/g of soil) and soil alkaline phosphatase activity (3.241 µg PNP formed/g of soil/h) was observed in treatment having 100% FYM +consortium. Actinomycetes population and urease activity showed varying trend as actinomycetes population (62 ×104 CFU/g of soil) was observed to be significantly higher in control and urease activity (399.33 μg urea hydrolysed/ g of soil/ h) in treatment having 100% FYM. Significantly higher soil organic carbon (0.35%) and available P (28.4 kg/ha) were observed in treatment having 100% FYM + consortium while available N (123.8 kg/ha) and K (121.9 kg/ha) were maximum in treatment having 50% FYM + 50% recommended dose of N and P +consortium. The maximum plant N uptake (598.2 kg/ha), P uptake (128.4 kg/ha) and K uptake (760.2 kg/ha) were recorded in treatment having combined application of FYM, inorganic and biofertilizers. Among plant growth parameters, root fresh and dry weight (5.67 g and 0.795 g respectively), shoot fresh and dry weight (147.221 g and 17.912 g respectively), shoot length (97.35 cm), number of pods/plant (12), pod weight/plant (29.39 g), seeds/pod (10), number of leaves (168) and number of branches/plant (31) were maximum in treatment having combined application of FYM, inorganic and biofertilizers. Pod length (9.9 cm) was the maximum in treatment having 100% recommended dose of N and P + consortium while nodule number per plant (32) was maximum in treatment having 100% FYM + consortium. Total pod yield (137.3 q/ha) was the maximum in treatment having 50% FYM + 50% recommended dose of N and P +consortium while stover yield (8.14 q/ha) was recorded maximum in treatment having 25% FYM + 75% recommended dose of N and P +consortium. NPK content of seed and straw were maximum in treatment having combined application of FYM, inorganic and biofertilizers. Significant positive correlation was observed between bacterial population and enzyme activities, soil properties, plant NPK content and yield. The results indicated that combined application of organic, inorganic and biofertilizers improved soil health and plant growth leading to increased yield.