Scallion soft rot is one of the most important diseases of green onion. Soft rot is widely distributed in a wide range of areas. It can cause softening and decay of the base of leaf sheath, which causes the outer leaf to fold and directly affect the yield. This article, Xiaobian for everyone detailed the main points of prevention and control.
What is the cause of the soft rot of onion?
Regardless of any disease, only by finding the cause, we can prescribe the right medicine and recover the loss. So here, Xiaobian hopes that the friends of the agricultural people must have this idea. Then, the general impact of the onion on the soft rot is nothing more than the following: low moisture, plant length, continuous cropping and breeding of flies, cockroaches, cockroaches and other underground pests seriously affected. In the summer and autumn of the year, the years of high temperature and rain are serious.
What are the measures for prevention and control?
1 selection should be excellent: before seeding, our seeds should be disinfected.
2 The choice of land should be appropriate: Because the pathogen of soft rot is like wet, like high temperature, so when we choose the land, we should choose the environment is dry, well drained, well ventilated.
3 management should be enough: the so-called management is enough, it means that our agricultural friends should apply enough base fertilizer, and the other should be based on the planting schedule. Fertilizer should be applied with organic fertilizer, rationally combined with nitrogen fertilizer, re-application of phosphate fertilizer, potassium fertilizer, supplement the elements needed for growth of green onion, to achieve balanced fertilization, to meet the needs of green onions. In addition, rotation should be taken, and the effect of reducing the source of bacteria can also be achieved.
4 diseases to be treated: should always check whether the green onions have signs of illness, after seeing clues, it should be prevented in advance. Spray protection can be started at the beginning of the disease. Here Xiaobian recommended to everyone the hay. Bacillus licheniformis or 2% spring leimycin, the effect is quite good.
5 soil to be disinfected: For the plots that have been seriously affected for many years, it should be disinfected with dysentery in a timely manner. The dosage is 25 grams of water and 15 kilograms.
The emergence of the soft rot of the onion and the prevention and treatment measures are mentioned here. I hope to provide some help to the green onion growers, and more knowledge about the cultivation of green onions. Please continue to pay attention to the Hui Nong School!
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