How to control the latest sorghum bug
Sorghum bug, also known as sorghum bug, is distributed in most parts of China. It is mainly parasitic on sorghum, wheat, rice and other Gramineae plants. It harms adults and larvae and absorbs plant sap, resulting in yellowing leaves and slow growth. So how to control the sorghum bug? let's take a look at the detailed introduction.
1. Occurrence of symptoms
It is harmful to adults and larvae, adults generally harm in May-June, larvae generally harm in April and July, larvae gather in the leaves after hatching, constantly sucking the juice of mesophyll tissue. The feeding capacity of larvae is less, and that of adults is large, which will form a withered spot on the leaves in a short time. With the increasing area of withered spots, the leaves will gradually wither and die, resulting in slow plant growth and serious lack of water. Great harm.
2. Occurrence regularity
It can give birth to two generations a year, and the adults overwinter in the underground stem, leaf sheath or under the topsoil. After the temperature rises in spring, it begins to recover, begins to spawn in early April, reaches its peak spawning period in early May, and begins to differentiate in early May. The first generation larvae appear and can grow into adults in about one month. The adults mate and lay eggs in late June, and the second generation larvae appear in July. In September, the second generation adults begin to overwintering, and so on.
3. Prevention and control methods
To control sorghum bug bugs, physical control should be combined with chemical control. First of all, the field should be cleared before planting, the disease and residual plants of last year should be cleaned up, the soil should be turned deep, and the sun should be used to kill overwintering adults and reduce the source of insects. When the first generation larvae occur, it can spray 1000 times of 80% dichlorvos EC or 90% crystal trichlorfon, 75 kg per mu, and the effect is better.
The above is the introduction of how to control sorghum bugs. I hope you can have a good harvest every year. I hope it can help you. If you want to know more about it, please follow us.
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