How to identify and control ginger blight when planting ginger?

Farmers who have planted ginger should have heard of ginger plague, which can be described as the "cancer" of ginger. Once ginger is infected with this disease in the process of planting, it will lead to a 35%~70% reduction in production or even no harvest, which will have a serious impact on farmers' economy.

As such a common devastating disease, how should we farmers who grow ginger prevent it?

Today, I want to tell you how to prevent and treat ginger plague. Let's have a look!

1. What is ginger blight?

2. The cause of ginger blight

3. Measures to control ginger blight

What is ginger blight?

Ginger blast is a bacterial disease, which can harm the stems, leaves and roots of ginger plants. The peak of ginger plague is mainly in August-September. After ginger plants are infected, the stems and roots will be yellowish brown at first. With the aggravation of the disease, the stems and leaves on the ground will gradually become abnormal (the stems are dark purple and the leaves are wilting), accompanied by rot and odor until the whole ginger dies.

Causes of ginger blast

The cause of ginger blast is complicated, which is one of the reasons why it is difficult to control ginger blast. Sometimes it's not that farmers don't know how to prevent ginger blight, but that they accidentally infected Jiang Miao. Here I mainly talk about several reasons why ginger may be infected with ginger blight. I hope everyone will try to avoid planting ginger.

First of all, the occurrence of ginger blast is related to the climate and environment. The climate here refers to temperature and rainfall. As mentioned above, the peak of ginger blight is from August to September, when the temperature is relatively high. Usually, the higher the temperature, the faster the disease spreads, and rainy weather will lead to ginger blight in a large number of plants in a short time.

Secondly, the pathogen of ginger blight can lurk in the soil for the winter. Generally speaking, ginger blight can survive for 2 years in the soil, so some farmers grow ginger, but they don't know that there are germs in the soil, so ginger plants are infected.

Finally, it is affected by the water source. Farmers plant ginger, in order to facilitate water diversion and irrigation, it will be close to the water source, but the pathogen of ginger blast will spread with the water source, making the plants sick, especially in the plots with poor drainage system, the incidence rate will reach about 75%.

Measures to control ginger blight

I believe that after reading the above causes of ginger plague, you will feel that ginger plague is really hard to prevent, and plants will get sick if they are not careful. So what measures can help ginger reduce the infection of ginger plague? And how to prevent ginger blight when infected.

Prevention: In order to reduce the risk of ginger blast, we have to choose good ginger seeds, and at the same time, we should investigate the soil when planting, avoid planting in the soil with pathogenic bacteria, and the irrigation system must be done well, and the water source must be clean when irrigation. When the weather is dry, you can't flood with water, so you need to control the amount of water.

Prevention and control: ginger and fields can be treated with chemicals before planting to reduce the infection mode in later planting. The method is as follows: using potassium permanganate to sterilize ginger; Sterilize the soil with 50% deionized water. In the process of planting, once infected plants are found, they should be pulled out immediately and not left behind. You know, this pathogen spreads very fast.

Generally speaking, when ginger seedlings grow three branches, they can be controlled by drugs. There are many kinds of special drugs: agricultural streptomycin sulfate, Bordeaux mixture, neophytomycin and so on. , and the dosage should be determined according to the actual situation. Taking agricultural streptomycin sulfate wettable powder as an example, it is usually sprayed with 4000 times solution on ginger plants once every other week for three times in a row to achieve the purpose of prevention and control.