Effect of nutrient management and cropping system on productivity under different rice based cropping systems

Abstract

A field experiment was conducted during 2010-11 to 2012-13 at Jabalpur (Madhya Pradesh) to study the effect of nutrient management and cropping system on productivity under different rice based cropping systems. The 4 different cropping systems (CS1- Green manuring Sunhemp – Rice – Wheat; CS2 – Rice – Chickpea –Sesame; CS3 – Rice – Berseem; CS4 – Rice - Vegetable pea - Sorghum) and three nutrient managements M1- 100% Organic (1/3 N through each of FYM, Vermicompost and Neem oil cake), M2 - 100% Inorganic (100% NPK through fertilizers), M3 - INM (50% NPK through fertilizer + 50% N through organic sources) with 3 replications were conducted in Strip Plot Design. The soil of the experimental field was sandy clay loam in texture, neutral in reaction (7.3), normal EC (0.52), low in OC (0.72%), medium in available N (264.05 kg ha-1) and P (12.8 kg ha-1) and high in K (285.2 kg ha-1). The highest weed intensity of (352.6 m-2), weed biomass (1183 kg ha-1), rice equivalent yield (69.35 q ha-1) and production efficiency (22.07 kg ha-1 day-1) during kharif, rabi and summer season in 100 per cent inorganic nutrient management and Rice-Berseem cropping system.