Mango gray spot disease typically affects older leaves, causing irregular brown spots along the leaf margins. This condition is more common during the seedling stage and can lead to severe damage if left untreated. In advanced cases, the affected leaves may fall off completely, and in extreme situations, the entire plant may die. The disease tends to occur more frequently when the plants are deficient in nutrients, lack sufficient water, or are grown in poor soil conditions.
To manage this disease effectively, proper agricultural practices should be implemented. First, improve overall tree health by increasing fertilizer application and ensuring adequate irrigation. This helps strengthen the tree's natural resistance. Second, promptly remove and destroy any infected leaves to prevent the spread of the disease. Third, apply fungicides such as 70% chlorothalonil diluted at a ratio of 500 to 1000 times or use a 1% Bordeaux mixture. These treatments have been proven to be highly effective in controlling the disease when applied at the early stages.
Regular monitoring and timely intervention are essential for long-term management of mango gray spot disease. By maintaining good cultural practices and using appropriate chemical controls, growers can significantly reduce the impact of this disease on their mango crops.
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