Wani, S P and Srinivasarao, C and Rego, T J and Pardhasaradhi, G and Roy, S (2007) On-farm nutrient depletion and buildup in vertisols under soybean (Glycine max) based cropping systems in semi arid Central India. Indian Journal of Dryland Agricultural Research and Development, 22 (1). pp. 69-73.
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