Effect of Tannery Effluent and Domestic Wastewater Irrigation on Growth Parameter and Flower Yield of Marigold
Abstract
Pot culture and field experiments were conducted at the Common Effluent Treatment Plant (CETP), Dindigul, Tamil Nadu, India to study the effect of irrigating treated tannery effluent and domestic wastewater with amendments on growth characters and flower yield of marigold. The pot culture was laid out in a factorial completely randomized design and field experiment laid out in factorial randomized block design with four replications. The results revealed that the mixing proportion of 25% treated tannery effluent (TTE) + 75% domestic wastewater (DWW) recorded taller plant height, higher root length, dry matter production and flower yield compared to other mixing proportions. The yield reduction under 25% TTE + 75% DWW was 14.62% (pot culturre) and 15.85% (field experiment) compared to normal water. This yield reduction was lesser level when compared to other mixing proportion. Regarding amendments, addition of gypsum showed better performance compared to Vesicular arbuscular mycorrhiza (VAM) and control (without amendments). Hence, Irrigation of 25% TTE with 75% DWW (1:3 ratio) with gypsum application for marigold will help to effective exploitation of tannery effluent and wastewater through enhanced yield and minimizing environmental pollution compared to 100% TTE.
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References
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