Mango gray spot disease typically affects older leaves, causing irregular brown spots along the leaf margins. This condition is particularly common during the seedling stage. In severe cases, the affected leaves may fall off entirely, and in extreme situations, the entire plant can die. The disease tends to occur more frequently when the plants are lacking essential nutrients, experiencing water stress, or growing in poor soil conditions.
To manage this disease effectively, proper cultural practices are crucial. First, improve overall tree health by providing adequate fertilization and consistent watering, which helps enhance the tree's natural resistance. Second, promptly remove and destroy infected leaves to prevent the spread of the pathogen. Third, apply a suitable fungicide—such as a 70% chlorothalonil solution diluted at 500–1000 times, or a 1% Bordeaux mixture. These treatments are most effective when applied at the early stages of infection.
In addition to these measures, it's important to ensure good air circulation around the trees and avoid over-crowding, as high humidity can promote disease development. Regular monitoring of the mango plantation will help detect any signs of the disease early, allowing for timely intervention. By combining proper care with targeted treatments, farmers can significantly reduce the impact of mango gray spot disease on their crops.
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