Browsing by Author "Regi P Mathews"
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ArticleItem Open Access Release of available phosphorus from rockphosphates and superphosphate during incubation under submergence(Kerala Agricultural University, 1985) Regi P Mathews; Jose, A I; KAUIncrease in the available P (Bray 1 and 2) content of the taterite and kari soils due to the addition of P fertilizers did not depend on the water solubility of the added P fertilizers. Increasing the level of application of P from 45 to 90 kg P20s/ha did not increase the available P (Bray 1 and 2) conspicuously in the laterite and kari soils.