Production Potential of Crop Rotations under Varying Levels of Native and Applied Phosphate in a Typic Ustochrept

Production potential of rice-wheat, maize-wheat and pearl millet-wheat cropping sequences was studied under varying levels of native and applied phosphorus in a field study for three years. Rice-wheat rotation produced the highest grain yield and also removed maximum phosphorus from soil followed by pearl millet-wheat and maize-wheat rotations. Phosphate application was relatively more economical in the rice-wheat rotation. Available P status was lowered more in rice-wheat rotation where no P was applied. but application of P helped in maintaining soil P status.