Browsing by Author "Osman, K. T."

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Direct absorption of organic phosphate by rice and jute plants
(International Journal of Plant Nutrition, Plant Chemistry, Soil Microbiology and Soil-Borne Plant Diseases, 1979-10) Mandal, R.; Islam, A.; Osman, K. T.
Appreciable amounts of organic phosphate from calcium glycerophosphate, lecithin, sodium phytate and inosine-5-monophosphate were absorbed directly by rice plants and that from calcium glycerophosphate and lecithin by jute plants under sterile and non-sterile conditions. The plants absorbed phosphate both in organic and inorganic combinations and the deficit of one form in the media made the other 'more available' to the roots. Sterilization of jute roots with 0.r„ HgCl^ stopped the absorption of phosphate upto 4 days while the treatment mixture of CjHjOH and HtOj indicates inhibitory effects on roots of neither plants.
Distribution of organic phosphate compounds in some soil profiles of Bangladesh
(Bangl. J. Sci. Res., 1980) Mandal, R.; Islam, A.; Osman, K. T.
Inositol phosphate, phospholipid^ ribonucleic acid and deoxyribo nucleic acid along with their derivatives decreased gradually with depth in the profiles, while their variable amounts were jointly correlated with organic phosphate, total phospate, organic matter, total nitrogen, pH and clay content of the soil. However, individually inositol phosphate was significantly correlated with organic phosphate, organic matter, pH and clay at the 0,1% level, and ribonucleic and deoxyribonucleic acids and their derivatives with organic phosphate and organic matter at the 5 and 10% level respectively while phospholipids with none of the factors studied.