There are two reasons why melon leaves spit "white water". One is the bacterial infection, and the white fungal pus occurs in the leaves, and the other is the salt damage caused by excessive soil salt. Although both of these diseases have a white liquid, they appear to be different, so they should be distinguished.
If a white liquid appears in the middle of the leaves or near the veins, and a round to irregular light yellow or translucent lesion appears on the leaves, the lesion is water-stained on the opposite side of the lesion, and there is no yellowish haze on the border between diseased and healthy leaves. The restriction occurred in the vicinity of the veins, and the lesions in the later stages were dark brown and dry and cracked. This situation is often referred to as bacterial leaf spot disease. Because many vegetable farmers do not observe these diseases carefully, and the use of drugs does not matter. Often, the drugs that control fungi and bacteria are mixed and treated together. Bacterial diseases are now taking place.
If a white liquid appears on the edge of the blade, it is generally considered that the concentration of the soil solution is too high. The reason why the concentration of soil solution is too high is due to the large amount of fertilizer used. According to the reporter, in recent years, the degree of soil salinization in the sheds has increased. It is precisely because of the large amount of organic manure such as chicken manure and rice husk manure that causes transport problems. Most of the farmers use a large amount of compound fertilizer and diammonium. Only with a small amount of commercial organic fertilizers, and in the later stages of melon growth, each watering will be flushed with some fertilizers, which leads to higher and higher concentrations of soil solution, melon leaves spit water, due to high salt content in water appears white.
In view of the current occurrence of bacterial leaf spot disease, ventilation can be increased to avoid condensation caused by excessive humidity in the greenhouse. At the same time, copper noble or DT (cupric acid copper copper) mixed with mettosole or phenylalkoxy (phenyl ether) can be used. Meconazole, etc., with chitin for prevention and treatment. For melon fertilizer, it is best to use biological bacterial fertilizer combined with high-quality compound fertilizer to improve the soil environment. Also pay attention to timely cultivating loose soil, increase soil permeability, and promote vegetable root growth.
If a white liquid appears in the middle of the leaves or near the veins, and a round to irregular light yellow or translucent lesion appears on the leaves, the lesion is water-stained on the opposite side of the lesion, and there is no yellowish haze on the border between diseased and healthy leaves. The restriction occurred in the vicinity of the veins, and the lesions in the later stages were dark brown and dry and cracked. This situation is often referred to as bacterial leaf spot disease. Because many vegetable farmers do not observe these diseases carefully, and the use of drugs does not matter. Often, the drugs that control fungi and bacteria are mixed and treated together. Bacterial diseases are now taking place.
If a white liquid appears on the edge of the blade, it is generally considered that the concentration of the soil solution is too high. The reason why the concentration of soil solution is too high is due to the large amount of fertilizer used. According to the reporter, in recent years, the degree of soil salinization in the sheds has increased. It is precisely because of the large amount of organic manure such as chicken manure and rice husk manure that causes transport problems. Most of the farmers use a large amount of compound fertilizer and diammonium. Only with a small amount of commercial organic fertilizers, and in the later stages of melon growth, each watering will be flushed with some fertilizers, which leads to higher and higher concentrations of soil solution, melon leaves spit water, due to high salt content in water appears white.
In view of the current occurrence of bacterial leaf spot disease, ventilation can be increased to avoid condensation caused by excessive humidity in the greenhouse. At the same time, copper noble or DT (cupric acid copper copper) mixed with mettosole or phenylalkoxy (phenyl ether) can be used. Meconazole, etc., with chitin for prevention and treatment. For melon fertilizer, it is best to use biological bacterial fertilizer combined with high-quality compound fertilizer to improve the soil environment. Also pay attention to timely cultivating loose soil, increase soil permeability, and promote vegetable root growth.
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