The physico-chemical properties of effluent from Mohan Meakin Breweries Ltd, Ghaziabad, UP, India (MMBL) have been determined, and its effects, directly on fertile soil and indirectly on wheat Triticum aestivum and pea Pisum sativum crops, have been studied. The effluent was found to be acidic in nature, and had high BOD and COD due to the presence of large amounts of solids. The effluent was rich in ammonia-nitrogen, nitrate-nitrogen, phosphorus and potassium, so that its application to the soil increased the values of available nutrients in the soil. The upper soil had high values of N, P, K and organic matter compared with the lower soil in the pots used. The highest perturbance was observed in the available potassium of the soil, when 100% effluent was used for irrigation followed by 75%, 50% and 25%, and the values of organic matter, ammonia-nitrogen and phosphorus also increased significantly. The pH of the soil decreased gradually with increasing concentration of the effluent. Depletion was noted in the CaCO 3 content of the soil irrigated with 100% and 75% effluent, while it increased with 50% and 25% effluent. The germination of pea and wheat seeds was restricted to 80% and 90%, respectively, when 100% effluent was used for irrigation; whereas germination was quick with 50% and 25% effluent. The growth of the plants was slow with 100% effluent while it was enhanced by using 50% effluent for irrigation.
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