Evaluation of different cropping systems for alfisols at different fertility levels on an operational scaleJ KKimemiaauthorA number of different cropping systems are practiced by farmers in the semi-arid tropics. Research has been carried out on individual cropping systems for some time. This present study was taken up to compare the various cropping systems possible under alfisol situation...Soil Science1983Andhra Pradesh Agricultural University;Department of AgronomyThesis