Effect of Vermicompost and Inorganic Fertilizer on Physico-chemical Properties of Soil on Cowpea (Vigna unguiculata)

Abstract

Keeping this in view on experiment is present with the following objective: To evaluate the effect of different doses of vermicompost with NPK on physico-chemical properties of soil. The soil of experimental area falls in order Inceptisol and soil texture was sandy loam (sand % 62.65, silt % 21.09 and clay % 16.26). The design applied for statistical analysis was carried out with randomized block design with three levels of @NPK 0, 50, and 100% ha-1 and three levels of @Vermicopost 0, 50 and 100% ha-1 respectively. The best treatment was effect on physical and chemical property of soil T9 (@100%NPK+ 100% Vermicompost) and yield Attributes T9 (@100%NPK+ 100% Vermicompost) of cowpea. The largest percentages of pore space (%) with depths of 0–15 cm and 15–30 cm, 46.22% and 45.39%, water holding capacity (%) of 42.28% and 43.34%, and organic carbon (%) of 0.40% and 0.38% were found in the post-harvest soil and pre- harvest plant. There were 299.43 kg ha-1 and 293.36 kg ha-1 of available nitrogen, 22.34 kg ha-1 and 21.67 kg ha-1 of available phosphorus, and 179.84 kg ha-1 and 176.43 kg ha-1 of available potassium. The combination of T9-(@100%NPK+100% Vermicompost) demonstrated non-significant differences in particle density (Mg m-3) of 2.45 and 2.47 Mg m-3, pH of 6.89 and 6.91, and EC(dS m- 1) in bulk density (Mg m-3) with depth 0-15 cm and 15-30 cm, which was 1.40 and 1.41 Mg m-3, particle density (Mg m-3) was 2.45 and 2.47 Mg m-3 pH was 6.89 and 6.91 and EC(dS m-1) 0.46 dS m-1 and 0.50 dS m-1.