Control methods of bacterial perforation in peach

Peach bacterial perforation is a common disease of peach, which is not only harmful to peach, but also harmful to fruit trees such as cherry, plum and apricot. Some varieties are seriously affected, such as Birthday Bun with Bean Paste Filling and sea honey. The pathogen mainly harms peach leaves as well as fruits. Warm overcast and rain is the hotbed of disease. Such diseases must be prevented and treated as soon as possible. Let's learn about the harmful characteristics of the bacteria, the performance after the damage, and the methods of prevention and control.

I. germs, transmission

The disease is only caused by Xanthomonas brevis. Bacteria in diseased branches overwintering, wind and rain, insects can spread, from the natural orifice, wound infection. Rainy season disease, spring begins, drought stops, summer rainy season relapses, red spider, closed orchard, aggravate the disease. The incubation period of whether the bacteria show or not. Generally affected by temperature and tree potential, the incubation period is about a week to a month ago. The lower the temperature, the longer the incubation period, the better the tree potential, the longer the incubation.

Symptoms and symptoms

First from the leaf infection, from the leaf vein infection, the beginning is the flooding of small spots, gradually expanding, the shape is round or irregular. There is a yellow halo, and the disease spot dries up and falls off into a cavity on a sunny day. If the disease spot is even harmful, the leaves will fall. Damage to the fruit, the first appearance of small brown spots, then blackened, spread to a series of pieces, and then the pericarp cracked.

III. Prevention

It is best to use stone sulfur mixture or Bordeaux liquid protective agent before the onset of the disease, spray once a month or two months, can not spray multiple times, no disease and affect growth. When building a garden, don't build it in low-lying land or rice fields. Pay attention to clearing the garden at any time, often cutting dead branches and old leaves. Trim the interior, adjust the growth structure and space, and always maintain the best natural tree shape.

IV. Treatment

When the disease is mild, naphthylacetic acid is used to regulate and inhibit the bacteria. Or use microbial drugs to eliminate germs, generally these agents should be sprayed with water into 400 liquid, when the disease is serious, reduce the amount of water spraying, generally spray about 4 times, once a week or so. After spraying, it is necessary to cut off the diseased branches, leaves and diseased fruits in time, and so on. Collect and burn, and the ground should be sprayed. The trench is set up with a good drainage channel and the drainage is smooth. It is necessary to apply fertilizer to strengthen the tree and enhance its resistance.

Peach bacterial perforation disease, which affects the tree potential and harms the fruit, is a common harmful disease, which directly affects the quality, the damaged fruit can not be sold, and the income of fruit farmers will also be affected. Therefore, we should pay attention to prevent diseases and ensure tree potential, yield and quality.