Browsing by Author "PUSHPENDRA SINGH"

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    Effect of Different Levels of Vermicompost and Potassium on Soil Health and Productivity of Soybean [Glycine max (L.)]
    (MPUAT, Udaipur, 2024) PUSHPENDRA SINGH; S.C. Meena
    The present investigation entitled, “Effect of different levels of vermicompost and potassium on soil health and productivity of soybean (Glycine max L.)” carried out during kharif season, 2023 at Instructional farm, Rajasthan College of Agriculture, Udaipur (Rajasthan). The field experiment was laid out in a split plot design with sixteen treatments and three replications. The main plot treatment comprises of four treatments of vermicompost viz., Control (V1), 3 t ha-1vermicompost (V2), 5 t ha-1 vermicompost (V3), 7.5 t ha-1 (V4) and the subplot treatment comprise of four treatments of potassium levels. viz., application of 0 Kg ha-1 (K1), 25 kg ha-1 (K2), 50 kg ha-1 (K3), 75 kg ha-1 (K4). The recommended dose (20:40:00 kg NPK ha-1) of fertilizers was applied as per treatment after soil test. The sowing was done by dibbling. Experimental results revealed that among different levels of vermicompost 7.5 t ha-1 shows significant effect on growth parameters, yield attributes, nutrient content and uptake, organic carbon, WHC, microbial population and quality parameters i.e., maximum plant height (56.45 cm), number of pods plant-1 (109.68), number of seeds pod-1, test weight (111.73 g), dry matter accumulation (31.69 g plant-1), seed yield (2123.40 kg ha-1), haulm yield (3690.49 kg ha-1), biological yield (5813.88 kg ha-1) and harvest index (36.52%).In soil properties significant result shown with application of 7.5 t ha-1 with maximum EC (0.23 dSm-1), organic carbon (0.49 %), WHC (39.73%) and soil available N (272.80 kg ha-1), P (29.81 kg ha-1), K (740.82 kg ha-1), S (18.85 kg ha-1) and micronutrients Zn (1.091 ppm), Fe (5.824 ppm), Cu (2.499 ppm) and Mn (4.050 ppm) and highest microbial population i.e., bacteria (66.08 × 107 cfu g-1), fungi (27.57 × 105 cfu g-1), Actinomycetes (27.87 × 106 cfu g-1) and dehydrogenase enzyme (17.72 μg TPF g-1 soil ha-1). Quality parameters also show significant results with 7.5 t ha-1 in protein and oil content i.e., 42.10% and 19.77%. The highest gross return (₹ 106189.13 ha-1) and net returns (₹ 43322.61 ha-1) found in vermicompost at the rate 7.5 t ha-1. But highest B-C ratio is observed in vermicompost at the rate 0 t ha-1(V1). Potassium levels also show significant results with 75 kg ha-1 in growth parameters, yield attributes and soil properties i.e., highest available potassium in soil (726.08 kg ha-1) and similar results with other nutrients and micronutrients. Highest nutrient content and uptake with 75 kg ha-1 in seed and haulm in all nutrients except copper. Protein and oil content also shows highest i.e., 41.10% and 19.37%. The highest gross return (₹ 92923.68 ha-1) and net returns (₹ 42344.58 ha-1) found in potassium at the rate 75 kg ha-1. But highest B-C ratio is observed in potassium at the rate 50 kg ha- 1(K3). Since best results are with vermicompost (7.5 t ha-1) and potassium (75 kg ha-1).