Author(s):

Kalpana PV, Jothimani P and G Umapathy

Abstract: To study the effect of different waste water irrigation on mulberry cultivation, different waste water samples were collected from Vadavalli, Thekkampatti and Ukkadam in Coimbatore district. The waste water samples were analyzed for the physico-chemical properties. The colour and odour of the tap water, paper mill waste water and sewage waste water were colourless and odourless but reeling waste water is grey colour with foul smell. The waste water samples consisting the major nutrients like nitrogen (N), phosphorus (P) and potassium (K) in tap water 12,84 mg/l (N), 0.89 mg/l (P), 20.04 mg/l (K), reeling waste water 13.57 mg/l (N), 1.15 mg/l (P), 22.68 mg/l (K), paper mill waste water 23.6 mg/l (N), 1.18 mg/l (P), 24.88 mg/l (K) and sewage waste water 18.46 mg/l (N), 1.68 mg/l (P), 20.33 mg/l (K). Minor nutrients like calcium (Ca), magnesium (Mg) and chloride (Cl) in tap water is 98.4 mg/l, 24 mg/l and 5.68 mg/l respectively, reeling waste water contains 109.6 mg/l, 37.44 mg/l and 28.4mg/l respectively, paper mill waste water is having 116.8 mg/l, 91.2 mg/l and 41.18 mg/l respectively and sewage waste water contains 548 mg/l, 221.6 mg/l, 46.86 mg/l respectively. So, utilization of waste water for the cultivation of mulberry is effective and ecofriendly.

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