Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

A. Nagaraju ¹, K. S. S. Prasad ¹

Affiliations
1 Department of Geology, Sri Venkateswara University, Tirupati-517 502 (A.P), IN

Abstract

The accumulation of elements in different organs of three plant species, viz., Azadirachta ladica, Ficus racemosa, Ficus hyspida and their associated surface soils occurring in the Nellore mica pegmatite belt were studied. Large amounts of Sr, Ba and B were noticed in the vegetation of the Nellore mica belt . Among these plant species, Azadiruchta indica (neem) has accumulated large amounts (2230 ppm) of Sr. Selectivity is the key factor for the uptake and accumulation of elements by plants. Species to species variation in the accumulation and tolerance was observed in the plants growing around mica mines. In their surrounding soils, large concentrations of Al, Fe, and La were noticed.

Keywords

Biogeochemistry, Nellore Mica Belt, Andhra Pradesh.

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S. Reginald ¹, A. Nagaraju ¹

Affiliations
1 Division of Biogeochemistry, Department of Geology, S.V. University, Tirupati -517 502, IN

Abstract

Biogeochemical characteristics, primarily involving the interaction of uranium, and certain other associated trace elements, in banana (Musa sapientum), are compared between the uranium mineralized Tummalapalle area in the Cuddapah District and nonmineralized Tirupati area in Andhra Pradesh. For this, multi-element analysis was carried out for Cu, Pb, Zn, Ni, Co, Cd, Li, Rb, Cs, Sr, Ba, Cr, Ag, and U for ischolar_main, pith, layers, leaf, flower, peduncle, and fruitlets of banana plant. In the Tummalapalle area, uranium is found only in the ischolar_main of the plant whereas it is not detected in any part of the banana plant of Tirupati. Further, the biogeochemical data may be employed to monitor the pollution levels of environment, and nutritional status of an area.

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