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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 ) |
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