Control Methods for Sunscald in Spring Watermelons
Symptoms: Watermelon fruits exposed to the blazing sun have a very high surface temperature, and the fruit tissue is scorched and necrotic, forming a dry scar. Causes: Sunscald is related to variety; varieties with dark rind color are prone to it. Secondly, in hilly areas the soil is relatively poor, plant vegetative growth is weak, there are few vines and leaves, and it occurs more often when the fruit is exposed...
Symptoms: Watermelon fruits exposed to the blazing sun have a very high surface temperature, and the fruit tissue is scorched and necrotic, forming a dry scar.
Causes: Sunscald is related to variety; varieties with dark rind color are prone to it. Secondly, in hilly areas the soil is relatively poor, plant vegetative growth is weak, there are few vines and leaves, and it occurs more often when the fruit is exposed.
Control measures: Apply more nitrogen fertilizer in the early stage to promote growth, and cover the fruit surface with grass to protect it from the sun.