Effect of Integrated Nutrient Management on Soil Fertility after Kharif Rice (Oryza sativa L.)

Abstract

The present investigation entitled “Effect of integrated nutrient management on soil fertility after Kharifrice (Oryza sativa L.)” was conducted at farmer’s field, Devaryamjal village, near Hakimpet, Rangareddy district, Telangana during Kharif season 2014 to evaluate the use of inorganic fertilizers and organic manures on growth & yield.The experiment was laid out in randomized block design (RBD) with 11 treatments, each replicated 3 times. The treatments consisted of control (T₁), 100% RDFN (T₂), 75% RDFN + 25% N through VC, PM and FYM (T₃, T₆, T₉), 50% RDFN + 50% N through VC, PM and FYM (T₄, T₇, T₁₀), 100% RDN through VC, PM and FYM (T₅, T₈, T₁₁).  Soil analysis revealed that treatment T₂ (100% RDFN) recorded lower values of Organic Carbon, available Nitrogen, Phosphorus and Potassium when compared to treatments which received 100% RDN through organic manures (T₅, T₈ and T₁₁). Among all the treatments, treatment T₅  (100% RDN – VC) recorded highest values of Organic Carbon (0.64%), available Nitrogen (285.8 kg ha^-1), Phosphorus (31.6 kg ha^-1) and Potassium (326.2 kg ha^-1)