Andhra Pradesh

Soils are generally low in organic carbon, deficient in P and medium to high in K status. Soil fertility index varies from 1.32 in Nellore and Anantapur districts to 2.49 in Adilabad. P index varies from 1.02 in Mahaboobnagar district to 2.01 in East Godavari, while K index varies from 1.62 in Kurnool dstrict to 2.84 in Ranagareddy. Available Zn ranges from 0.2 to 2.0 ppm in black soils and 0.2 to 1.6ppm in red soils. Zn deficiency is a serious problem in Nagarajunasagar command, Kurnool and Cuddapah canal areas and in all black and fine soils where drainage is impeded under submergence conditions(Table )