Reprints
Permanent URI for this collectionhttp://localhost:4000/handle/123456789/1975
Browse
2 results
Search Results
Item Phosphorus fractions in relation to the genesis of some oxisols in Kerala(Kerala Agricultural University, 1987) Stella Jacob; Venugopal, V KA study was made on phosphorus fractions from six profile collected from laterite soil (Oxisols) series identified in different regions in Kerala. Fe-P formed the predominant among the active fractions on all the soils investigated except Nenmanda and Thonnackal series indicating their highly weathered nature. This was followed by Ca-P and AI-P respectively in the case ©f Anjur, Kanjikulam and Mannur series. In Kootala series, Fe-P was followed by AI-P and then Ca-P. Thonnackal series showed a predominance of Ca-P followed by Fe-P and then AI-P.Item Comparative chemical composition of soil and gravel in some oxisols(Kerala Agricultural University, 1987) Stella Jacob; Venugopal, V KA study was made on the comparative chemical composition of soil and coarse fragment gravel in some Oxisol series identified in different regions in Kerala. The chemical composition of gravel showed a depletion of SiO, and accumulation of constituents especially Fe20s and AI203. Between sesquioxides, accumulation of Fea03 appeared to be more compared to AI203. The mean values for the profiles showed the highest accumulation of Fe203 in Thonnackal series followed by Anjur, Kanjikulam, Mannur and Kootala. High gravel/fine earth ratios of the constituents have been observed for Fe2O3. AI203, MgO, P2O5 and Na20. The gravel from the upper layers of the profile showed accumulation of constituents to a greater extent than the lower layers.