Control of Powdery Mildew Disease of Tamarind Seedlings

Five chemicals namely Bavistin, Calixin, Karathene, Morestan, Rogor each at 0.05 and 0.1% concentrations and sulphur as dust, were tested in the forest nursery against powdery mildew of tamarind (Tamarindus indica Linn.) caused by Oidium Sp. These chemicals were applied three times at an interval of 15 days. Sulphur dust was most effective followed by Karathane (0.1%) and Calixin(0.1%). Though the Karathane and Calixin were effective at 0.0.5% level but disease index was more compared to at 0.1% level. Morestan, Bavistin and Roger were not effective. The percentage disease indices in sulphur dust, Karathane (O.l%) and Calixin (0.1%) were 0, 6.60 and 6.60 respectively whereas in control plot it was 93.20, Sulphur dust, Karathane and Calixin can be used for controlling powdery mildew disease of tamarind.