Effects Of Textile Industrial Waste Water And Uptake Of Nutrients On The Yield Of Rice

Abstract

An experiment was conducted at Mouchack textile industrial area of Gazipur for two consecutive years (1999-2000) to study the effects of use of industrial waste water on the yield, nutrient content, and uptake of Boro rice. The experiment was laid out in a randomized complete block design (RCBD) with three replications. The six treatments in this study were: T 1 : uncontaminated field + fresh water, T 2 : uncontaminated field + mixed water, T 3 : uncontaminated field + contaminated water for non-contaminated field, and T 4 : effluent contaminated field + fresh water, T 5 : effluent contaminated field + mixed water, T 6 : effluent contaminated field + contaminated water for contaminated field. Among the six treatments, uncontaminated field + fresh water (T 1 ) showed the best positive effect on rice. The N, P. K, and S contents and uptake were higher in T 1 , but Zn, Mn, Fe, Cu, and Pb were higher in T 6 treatment. The treatment T 1 , gave the highest grain yield (5.23 t / ha in 1999 and 5.40 t/ha in 2000), followed by mixed water (4.19 t/ha in 1999 and 4.24 t/ha in 2000) in both the growing seasons. Keywords: Industrial waste water; heavy metal; textile waste water; yield; nutrient content; uptake; rice.