Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 15, Issue 4, 2013; Page No.(673-678)

CHANGES IN SOIL ENZYME ACTIVITIES UNDER THE INFLUENCE OF COTTON GINNING INDUSTRY EFFLUENTS

K. VENKATESWAR REDDY , T. VIJAYALAKSHMI , KODAPARTHI ASHWITHA AND E. PRATHIBHA SHALINI

Abstract

Release of cotton ginning industry effluents on to the agricultural lands causes an indicative change in nutrient cycling and organic matter processing. In the present study, cotton ginning industry effluent discharged soil (test) and undischarged soil (control) were collected from the surrounding areas of cotton ginning industry. The physicochemical, biological properties and soil enzyme activities such as amylase, protease, cellulase and urease were examined. The experimental results indicated that, most of the physicochemical properties such as silt, clay, electrical conductivity, water holding capacity, organic matter and total nitrogen, phosphorous and potassium, microbial population and selected enzyme activities were significantly higher in the test sample than in the control. Additionally, activities were increased with increasing the incubation period up to 21 d over 0 d, however, activities were adversely affected at 28 d. Furthermore, relatively higher activities were observed in soil incubated in the presence of substrate than in the absence of substrate.

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