Sorghum is often attacked by various pests and diseases during the growth process, which will affect the yield and quality of sorghum, and even lead to the failure of the harvest. Therefore, it is very important for sorghum growers to understand and master the control methods of sorghum pests and diseases.
1. Sorghum smut.
Sorghum smut is a common disease that turns sorghum ears black, affecting the yield and quality of sorghum. The disease is mainly transmitted through infected sorghum seeds, but it can also be transmitted through soil and irrigation water.
Prevention and control methods: 1Choose sorghum seeds of disease-resistant varieties.
2.Before sowing, the seeds are sterilized, such as soaking them in warm water or dressing them with fungicides.
3.Avoid planting sorghum in severely affected areas.
4.Implement a crop rotation system to reduce the occurrence of diseases.
2. Sorghum rust.
Sorghum rust is a fungal disease that causes rust-colored spots to appear on sorghum leaves, and in severe cases, it will cause the leaves to wither and fall off, affecting the yield and quality of sorghum. The disease is mainly transmitted by airstreams.
Prevention and control methods: 1Strengthen field management, remove diseased and dead leaves in a timely manner, and reduce the spread of pathogenic bacteria.
2.Choose sorghum seeds of disease-resistant varieties.
3.In the early stage of the disease, spray fungicides in time for prevention and control.
3. Sorghum aphids.
Sorghum aphids are a common pest that can cause serious damage to sorghum, causing sorghum leaves to curl, shrivel, and even cause the whole plant to die. The insect is mainly transmitted through migration and reproduction.
Prevention and control methods: 1Carry out pesticide control in time at the seedling stage to avoid the proliferation of aphids.
2.Yellow plate booby traps or natural enemies are used for control.
3.Strengthen field management, remove weeds and dead leaves in a timely manner, and reduce the breeding grounds of aphids.
Fourth, sorghum red spider.
Sorghum red spider is a common pest, which can cause serious damage to sorghum, causing yellow-white spots or overall yellowing of sorghum leaves, and in severe cases, it will cause the leaves to wilt and fall off. The insect mainly reproduces in high temperature and dry environments.
Prevention and control methods: 1Strengthen field management, timely watering and moisturizing, and improve the growth environment of plants.
2.In the early stage of insect infestation, spray insecticides in time for control.
3.Biological control using natural enemies.
To sum up, for the common pests and diseases of sorghum and the control methods, growers should strengthen field management, select sorghum seeds of disease-resistant varieties, find and improve pests and diseases in time, and take scientific and reasonable preventive measures to ensure the yield and quality of sorghum.