EFFECT OF FLUORIDE CONTAMINATION ON MICROBIAL ENZYMATIC ACTIVITY IN SOIL

The accumulation of environmental contaminant such as fluoride in wetlands especially rice fields is increasing drastically by the action fertilizers, pesticides, mining, waste disposal, and atmospheric pollution which Kuttanad, unique tropical wetland agro ecosystem not an exception. Accumulation excess F- environment poses serious burden to all organisms. Since soil microbial enzymes respond more quickly various conditions management practices than any other quality parameters thus used detect early changes health. In view this, activities involved biogeochemical cycles urease, protease, dehydrogenase, arylsulphatase, acid alkaline phosphatase were investigated. Result showed thatF- had inhibitory effect on activity studied possibly due adverse microorganisms.