Effect of Different Levels of Vermicompost and Potassium on Soil Health and Productivity of Soybean [Glycine max (L.)]
Loading...
Date
2024
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
MPUAT, Udaipur
Abstract
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).
Description
Keywords
Citation
Singh P. and Meena S.C.