SYMPTOMS 1 Off colored patches on upper surface of older leaves 2 Patches appears like flour or powder dusted on them 3 In severe infection whole plant turns purplish yellow CAUSES 1 Dry arid condition 2 Water scarcity 3 Late season moisture PRECAUTIONARY MEASURES 1 Use atleast 800 kg Bone Meal per acre 2 Give adequate irrigation 3 Avoid over head irrigation 4 Prunning older leaves to maintain better air circulation. 5 Use Silicon or Potassium silicate at an interval of 15 days 6 Give H202 with Nano Silver at 20 days interval 7 Burn earlier crop residues 8 Fertigation should be maintain such that Potash level should be on higher side from flowering CONTROL MEASURES 1 Fungicides like Sulphur, Myclobutanil, Tebuconezole,Hexaconezole, Tetraconezole, Azoxystrobin are much effective 2 Use Potassium carbonate with above chemicals for better results 3 Potassium salt of Phosphorus acid + Tebuconezole is the best combination. This combination literally burns spores of PM 4 Use more water in sprays (1.5 times) 5 Sprays of milk shown fruitful results 6 Root application of sulphate of Potash & carrying fungicidal spray after 24 hours shown best results 7 In Biological control using Trichoderma, Pseudomonas & Amplilomysis are gaining popularity
Skin looks like burnt and branches are dying And there are spots on the leaf
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