EFFECT OF DYEING FACTORY EFFLUENTS ON SEED-GERMINATION AND SEEDLING DEVELOPMENT OF GROUNDNUT (ARACHIS-HYPOGAEA)

Physico-chemical analysis of the dyeing factory effluents revealed high amounts of total, suspended and dissolved solids. Sodium, potassium, sulphate, nitrate and phosphate were also present in significant amounts. Diluted effluents (upto 50%) favoured seed germination, hyopocotyle development and seed vigour. In the higher concentrations, they were decreased; but the level was always higher than Seedling growth was also favoured by diluted effluents, Height of the seedlings, length of root system, leaf area and seedling biomass were increased by low concentrations of effluent But high concentrations seedling growth. The physiological components of the groundnut seedlings were also altered by dyeing factory effluents. While diluted effluents increased the chlorophyll, carbohydrate and protein content of the seedlings, the pure effluent decreased the amount of these physiological parameters.