Ecology, Environment and Conservation Paper

Vol 22, Issue 2, 2016; Page No.(667-672)

EFFICIENCY OF TREATED TANNERY EFFLUENT AND DOMESTIC WASTEWATER IRRIGATION WITH AMENDMENTS ON NUTRIENT UPTAKE, SOIL FERTILITY, YIELD AND ECONOMICS OF COTTON

N. Jagathjothi, M. Mohamed Amanullah, K.S. Subramanian and G. Balasubramanian

Abstract

Pot culture and field experiments were conducted at the Common Effluent Treatment Plant (CETP), Dindigul, Tamil Nadu during kharif 2011-12 to study the efficiency of irrigating treated tannery effluent and domestic wastewater with amendments on nutrient uptake, soil fertility, yield and economics of cotton. The mixing proportion of 1:3 ratio (25% treated tannery effluent + 75% domestic wastewater irrigation) recorded higher nutrient uptake and available soil NPK content compared to other mixing proportions. Similarly, seed cotton yield was also higher in 1:3 ratio with yield reduction around 15% compared to normal water irrigation. Regarding amendments, gypsum application further positively influenced the performance of irrigation source on soil characteristics and crop yield. With respect to economics, irrigation with 25% TTE + 75% DWW without amendments recorded higher benefit cost ratio compared to other mixing proportions.

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