Study on the Effect of Pendimethalin with or without Inorganic, Organic Fertilizers in Relation to the Availability of Macro (NH4+ -N2, P, K) and Micro Nutrients in Bulandshahr Soil

Abstract

A net house study was conducted to investigate the effect of pendimethalin  with different concentrations  (500, 1000 and 1500 gai.) with  inorganic, organic fertilizers (NPK and vermicompost) on the availability of  ammonium nitrogen, phosphorus, potassium ( NH₄⁺ -N₂ , P, K) and Cu, Mn, Zn and Fe in Bulandshahr  soil. Pots were filled with recommended rates of NPK and vermicompost under wheat plants. Among the herbicide concentrations pendimethalin @1000 gai. proved most  beneficial as compared to other two doses. Pendimethalin @ 1500 gai. proved deleterious for soil nutrients as compared to other two concentrations. It is well known that generally fertility of soil is realated to soil nutrient status. The use of NPK and vermicompost proved better in enhancing the nutrients ,  which may have exerted a positive effect on wheat yield as compared to herbicide use only. Vermicompost increased the micronutrients the most.