Author(s):

SJ Vaghela, JC Patel, DG Patel, BL Yadav and JS Dabhi

Abstract: A field experiment was conducted during the years 2011-12 and 2012-13 to study the effect of different cropping systems on yield, nutrient content and uptake by different crops in North Gujarat Agro-climatic condition on loamy sand soils of Agronomy Instructional Farm, Chimanbhai Patel College of Agriculture, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar. The experiment was laid out in randomised block design with four replications comprising ten treatments viz., T₁ : Castor sole, T₂ : Greengram + castor (2:1), T₃ : Cowpea + castor (2:1), T₄ : Groundnut + castor (2:1), T₅ : Sesamum + castor (2:1), T₆ : Greengram-rabi castor, T₇ : Castor-summer pearl millet, T₈ : Castor-summer greengram, T₉ : Castor-summer sesamum and T₁₀ : Castor-summer mothbean. Among cropping systems, castor sole and groundnut + castor inter cropping system produced significantly higher seed and stalk yield of castor than that of other treatments. Maximum content of nitrogen by castor crops as well as inter/sequence crops was recorded in castor + groundnut intercropping system while, phosphorus content by castor seeds was recorded with castor-summer pearl millet. Significantly maximum potassium content by castor seed was recorded under treatment T₉ (Castor-summer sesamum) while, significantly higher potassium content by castor stalk was recorded with treatment T₃ [cowpea + castor (2:1)]. Significantly maximum potassium content by seeds, stalk of castor and seed and straw/haulm of inter crop/sequence crop was recorded when groundnut was sown as inter crop. Significantly the highest sulphur content of seeds and haulm of groundnut was obtained when, it grown as groundnut + castor (2:1) inter cropping system. Castor-summer pearl millet system recorded maximum uptake of N, P₂O₅ and K₂O while groundnut + castor recorded maximum uptake of sulphur.

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