As temperatures increase, peppers are highly susceptible to sunburn. One of the most common symptoms is rot on one side of the fruit. When humidity levels are high, the damaged area can become a breeding ground for bacteria, leading to full fruit rot. Sunburn typically affects smaller and medium-sized peppers more frequently.
The causes of sunburn in peppers are varied. If the plants are spaced too thinly or not properly managed, the fruits may be exposed to direct sunlight, causing localized overheating. Even when fruits are hidden under leaves, scattered light can concentrate on them, leading to similar damage. In the early morning, large dewdrops on the fruit can collect heat once the sun comes out, resulting in burns. Additionally, if the soil is dry during the hottest part of the day, a sudden rain can cause thermal shock and lead to sunburn.
To prevent and manage sunburn, it's essential to use shade nets to protect the fruits from direct sunlight. Regular and appropriate irrigation helps maintain soil moisture, reducing the risk of heat stress. Diseased fruits should be removed early to prevent the spread of bacterial infections. Applying foliar fertilizers like Yashan 120, along with essential micronutrients such as calcium, magnesium, boron, zinc, and molybdenum, can enhance the plant’s overall resilience. Proper nutrient management and timely interventions play a key role in ensuring healthy pepper growth and minimizing sunburn damage.
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