The Wide extent to which Jonna and Korru crops are cultivated in the Cuddapah and Kurnool districts on account of their being the staple food crops of the area.amply justify the need for effect - ing improvement in the productive power of these crops.A detailed examination of the existing agronomic practices in the locality reveals that apart from the essential principles underlying the system of cultivation.there exist many differences in the several agronomic aspects of raising the crops.mainly due to soil and environmental variation.The several modifications of agricultural practices adopted in these two districts .with special refrence to time of sowing ,spacing ,seed-rate,- rotation and other factors,from an interesting subject of study to the agronomist.The many varieties of Jonna and Korra grown in the tract.though they are essentially."Pacha Jonnas" and "Sena Korras" differ in their charaters .with these variations in soil fertility and environmental factors.
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