December 2012

If a brownish coat appears on the knife then add more lime solution. Keep repeating the procedure till the brown coat no longer forms on the knife. Presence of free copper is injurious to plants, hence to test for the excess copper if any, After preparing the solution it is advisable for farmers to use it immediately as it loses its efficacy with lapse of time. However, if mixture is to be preserved for the next days add 50 to 100 g sugar or jaggery into the 100 litre solution. Drenching of diseased coconut palms with one per cent borax solution thrice a year is effective in reducing the intensity of Thanjavur wilt disease. Drench the pits with one per cent bordeaux mixture before planting coconut seedlings. Bordeaux paste consists of the same ingredients as those of bordeaux mixture but it is in the form of a paste. It is generally made by dissolving 100 gms of copper sulphate and 100 gms of quick lime each in 500 ml of water separately.

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