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Small, irregular yellow or brown spots first appear on leaves.
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These spots spread and deep surround the whole leaves.
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Even on the fruit, these spots produce small dark blacks which spread slowly.
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Pink spores are formed in the middle of these spots in wet weather.
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To avoid this disease, treat with Carboxin 37.5 + Thiram 37.5 [Vitavax power] @ 2.5 gm/ kg seed.
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Spray Mancozeb 75% WP [M45] 500 gm or Kasugamycin 5% + Copper Oxychloride 45% WP [Conika] @ 250 gm per acre in 200 liters of water at an interval of 10 days.
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For biological treatment, spray of Trichoderma viride [Rizocare] @ 500 gm/acre or Pseudomonas fluorescens [Monas Curb] @ 250 gm/acre can be done.
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