Two color spots on the bell pepper fruit

First, the symptoms of disease. The lesions are black in color and yellow in color. These two kinds of stains are all physiological diseases. They usually appear when the fruit starts to turn color. The lesions are round or nearly round, with a diameter of 2-6 mm. They are slightly concave, and their size and shape are basically the same. They are uniformly distributed on the surface of the fruit. To the flesh, the flesh is changed into a sponge, but it does not rot and does not spread. The reasons for the different colors are also different.

(1) Black lesions: Black lesions are caused by low temperatures, and the occurrence of melasma occurs when the bell peppers continue to cool at temperatures above zero degrees for many consecutive days. (2) Yellow lesions: Yellow lesions are known to occur very early in the fall, and yellow lesions are caused by insufficient light at high temperatures of 30-35Â°C, and nitrogen use is the main cause.

Second, disease prevention methods. (1) Select resistant varieties; (2) Black spots: Prevent low temperatures; (3) Yellow spots: Use shade nets to make the shades cool and cool, and to avoid over-coverage for a long period of time to form a low light environment; it is recommended to use nitrogen fertilizers reasonably and at the same time at high temperatures. The leaves are supplemented with boron and potassium.

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