Ecology, Environment and Conservation Paper

Vol.10, Issue 04, 2004; Page No.(431-441)

ARBUSCULAR MYCORRHIZAL FUNGI AND SOIL AMENDMENTS IN RESTORATION AND REVEGETATION OF COALMINE OVERBUR- DEN DUMPS OF MARGHERITA COA!BELT ASSAM

P. Hazarika, N.C. Talukdar and Y.P. Singh

Abstract

Influence of Arbuscular Mycorrhizal fungal (AMF) inoculurn, farm-yard manure (FYM), lime and topsoil of revegetated 10-year-old overburden dump was studied on growth and biomass production of Mimosa pudica L. and (rota/aria striota DC grown in coalmine overburden spoils in pot culture experiment.AMF inoculuation enhanced plant-growth in different OBD spoils of varying ages. Growth stimulation by AMF was least in 5-year-old OBD spoil as the physico-chemical properties of which were not congenial.Addition of lime and FYM caused 2 and 4 folds increased in plant growth in 1- and 5-year-old OBD spoils.The addition of 100g soils from 10-year-old overburden dump improved growth of the plants both in 1- and 5-year-old OBD spoils.The results of the study indicated positive role of AMF, lime, FYM and 10-year-old OBD soil in revegetation of coalmine spoils. Plant biomass production was better in application of lime and FYM with AMF.

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