Because blight and stagnation are one of the most common pests and diseases of plants, they all damage the stem base of plants, and the symptoms of plants are similar and difficult to distinguish. Blight and rickets are two major diseases in vegetable seedlings, mainly affecting vegetables such as cucumber, tomato and eggplant. Therefore, the differences between the two diseases and the pesticide control methods are introduced as follows to avoid misjudgment.
First, the difference between the blight and the disease
1. Symptoms: Pull up the seedlings, and when it is wet, you can see the light brown spider silky mold, and the disease of the disease is white floc.
2. Symptoms: The more prominent feature is that standing blight is standing and dying, and the disease is that the seedlings fall and die. The blight began to produce elliptical irregular dark brown lesions. Later, the lesions expanded, and the stems were wrapped around the stem. The diseased part collapsed and the leaves eventually died.
3, onset time: çŒ ç—… 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般 一般
4, the onset temperature: 15 ° C below the triggering of the disease, 20-24 ° C conditions are not easy to occur blight.
Second, the prevention and treatment of blight and rickets
Because the pathogens caused by these two diseases are different, the pesticides selected in the prevention and treatment are also different. First remove the diseased diseased seedlings, take them out of the field for deep burial or burning, and then spray drugs to prevent and cure.
1, blight: optional 50% inactivated WP 600 times solution, or 5% Jinggangmycin water 1000 times solution plus 70% methyl thiophanate 1000 times solution, or 50% Leica The wet powder 600 times liquid is used for prevention and treatment.
2, tripping disease: optional 90% Phytophthora WP 500 times solution, or 72.2% Frost mold water agent 600 times solution, or 72.2% Plex water 600 times solution, or 30% carbaryl water 600 times solution, spray on water.
Spray control, choose to do sunny, spray some grass ash after spraying, reduce soil moisture, rational rotation, create an environmental condition that is not conducive to the disease.
More pesticide knowledge , please pay attention to China Pesticide Network
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