How to treat leafy vegetable disease?

Leafy vegetables are a necessary source of vitamins in daily life, and many people grow leafy vegetables, so how to treat leafy vegetable diseases?

There are many kinds of leafy vegetable diseases, such as anthracnose, downy mildew, black spot, etc., different disease control methods are not exactly the same, can be treated with symptomatic chemicals plus field management.

I. anthrax

The crop suffers from anthracnose, the specific symptoms are: the leaf spot is white in the center, the edge is brown, the later stage is easy to break perforation, petiole disease brown, sunken.

Control methods: azoxystrobin, zinc benzoate + difenoconazole or difenoconazole + prochloraz can be used in the initial stage. In addition, the field should also pay attention to timely drainage, ventilation.

2. Downy mildew

The specific symptoms of downy mildew are as follows: light yellow nearly round to polygonal spots are formed on the leaf surface at the initial stage of the disease, which is easy to be complicated with angular spot disease. When the air is moist, the back of the leaf produces a frost-like mildew layer, which can sometimes spread to the leaf surface. In the later stage, the disease spot withered and died, showing yellowish brown, and in severe cases, all the outer leaves withered and died.

Methods of prevention and treatment: when the disease was mild, the HILOT cream was diluted and sprayed once every 5-7 days; when the disease was serious, HILOT cream was sprayed once every 3 days, and the specific times were determined according to the condition.

III. Black spot

The specific symptoms of black spot disease are as follows: reddish brown to purplish brown spots appear on the leaf surface at the initial stage of the disease, and gradually expand into a round or amorphous dark black spot, with a yellow halo around the spot, with a radial edge and a diameter of about 3-15 mm. In the later stage, there are small black spots on the lesion.

Prevention and control methods: mancozeb + bromopropionitrile, carbendan + puthulide, thiram + isocarbamide and other agents can be used for control.