Recently, some farmers said that the peanuts in his family were sick. In fact, this is peanut stalk rot, which is a relatively common disease. It is easy to be infected during the growth of peanuts. If it is not prevented and prevented in time. It has a great impact on peanut production.
Under normal circumstances, after the disease is light, the yield is reduced by about 20%, and the weight can be more than half. The most serious cause is directly caused by the harvest. Therefore, it should be paid attention to by the agricultural people.
Peanut stem rot first invades the cotyledons, causing the leaves to be brown and rot, and then invading the stem base, which also causes the base of the stem to turn brown, and water-stained lesions appear, then the color turns black, eventually leading to the whole The peanuts of the plant are withered and looked like the peanuts are sunburned after harvesting.
The infection of peanut stalk rot is mainly caused by wind and rain, because the pathogen of stem rot will survive the winter in the field. When the next year begins to invade, the most susceptible to infection is the peanut seedling stage. At this time, the resistance is small, no Agree to resisting itself, and then the later result period, directly affecting the formation and fullness of peanut fruit, and thus affecting the output.
Under normal circumstances, peanut stalk rot is mainly prevention. If the prevention is not in place, after the infection has been infected, it is necessary to prevent it in time. The common methods are as follows:
1. Reasonable rotation
As mentioned above, the pathogen stays in the field, and the rotation is reasonable. Some bacteria can not invade other crops. After the rotation, peanuts are planted, which is good for avoiding the invasion of germs, such as corn, wheat, sorghum and other grasses. Crop rotation.
2, fertilization
If fertilizing, it is recommended to use decomposed fertilizer, which is what we call the manure, in order to change the fertilization situation in the field and achieve the purpose of preventing stem rot.
3, seed dressing before sowing
Seed dressing is a very good way to prevent peanut stalk rot. Commonly used agents are difenoconazole or rust rust, thiram, etc. This method is also one of the most commonly used in recent years, and the effect is good. I hope to prepare for planting. Peanut friends, remember not to forget.
4, chemical control
If the preventive measures are not in place, the peanut plants in the field are infected with stem rot, and the drugs are controlled in time. The earlier the time, the better the effect. The commonly used drugs are: methyl thiophanate, carbendazim, chlorothalonil, etc. The agent can also be compounded. If the plot is serious, it can't be done once, every other week or so.
The above content is a brief introduction to the peanut stalk rot that Xiaobian tells everyone. I hope that during the planting process, the crops will not be panicked. As long as the prevention and control is timely, the crop yield will be guaranteed!
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