Symptoms: Large patches of depigmentation and whitening occur on the sunny side of the fruit, distinct from the surrounding healthy parts. The surface was shiny, with a clear, leathery depression. The diseased part turned white and thin. Different fruit lesions vary in size and shape. In later stages, the diseased body became slightly yellow, wrinkles sometimes appeared on the surface, and the skin became dry and shrunk. The flesh became necrotic and turned brownish.
Etiology: The fruit was burned due to excessive temperature in direct sunlight.
1. There are dewdrops on the fruit in the morning. If the sun shines directly on the dewdrops, the dewdrops will collect light and absorb heat, and they will burn the fruit.
2. If the tomato is too thin or pruned, the toppings are too heavy, or the leaves are too much, the fruit is exposed outside the leaves and leaves are burned due to direct sunlight.
3. It is easy to aggravate the condition of the weather, dry soil, or water after rain, resulting in a lot of sunburn.
Control methods:
1. Suitable for planting density. The density of summer and autumn in the open field should not be too small and should be closely planted.
2 timely, moderate pruning, snoring, the top of the fruit to leave more than two leaves shade.
3. Pay attention to the direction of the plant. Generally, the north-south line will be lighter to the sunburn.
4. When straddling, try to arrange the ears on the inside of the tomato rack.
5. When the temperature of greenhouses and greenhouses is high, timely ventilation will be conducted to reduce the temperature of the fruit surface and the leaf surface, and timely watering will be conducted to reduce the body temperature of the plants through transpiration.
6. Spray 85% of the long-term solution at a concentration of 2000-3000 mg/L to increase the heat resistance of the plant.
7. In the summer heat season, shade nets can be used to shave fruits, and it can also effectively avoid the occurrence of sun-burning fruit.
Etiology: The fruit was burned due to excessive temperature in direct sunlight.
1. There are dewdrops on the fruit in the morning. If the sun shines directly on the dewdrops, the dewdrops will collect light and absorb heat, and they will burn the fruit.
2. If the tomato is too thin or pruned, the toppings are too heavy, or the leaves are too much, the fruit is exposed outside the leaves and leaves are burned due to direct sunlight.
3. It is easy to aggravate the condition of the weather, dry soil, or water after rain, resulting in a lot of sunburn.
Control methods:
1. Suitable for planting density. The density of summer and autumn in the open field should not be too small and should be closely planted.
2 timely, moderate pruning, snoring, the top of the fruit to leave more than two leaves shade.
3. Pay attention to the direction of the plant. Generally, the north-south line will be lighter to the sunburn.
4. When straddling, try to arrange the ears on the inside of the tomato rack.
5. When the temperature of greenhouses and greenhouses is high, timely ventilation will be conducted to reduce the temperature of the fruit surface and the leaf surface, and timely watering will be conducted to reduce the body temperature of the plants through transpiration.
6. Spray 85% of the long-term solution at a concentration of 2000-3000 mg/L to increase the heat resistance of the plant.
7. In the summer heat season, shade nets can be used to shave fruits, and it can also effectively avoid the occurrence of sun-burning fruit.
Matcha Tea Kit,Matcha Tea Private Label,Matcha Powder Private Label,Matcha Private Label
SHAOXING ROYAL TEA VILLAGE CO.,LTD , https://www.yccmatcha.com