China is a big cotton producing country. We all know that we can’t live without cotton. It mainly makes all kinds of clothes and many household products. But in the process of cotton planting, we will encounter many diseases, which will affect the quality and yield of cotton. Xiaomianqinnong net will bring you common cotton diseases and insect pests and control methods.
Common cotton diseases and insect pests and control methods
1. Fusarium Wilt of cotton
Cotton Fusarium wilt is the most common and main disease of cotton. It occurs all over the world, causing serious damage to cotton production and great losses. Cotton Fusarium wilt mainly damages the seedlings of cotton. There are many forms when the disease occurs. Some leaves appear yellow reticulation, and finally the leaves wither. Some leaves turn yellow or purple, but eventually the leaves wither and the plants die.
Control method: the pathogen of Fusarium wilt can survive the winter safely in soil and chemical fertilizer. As new plants continue to spread in the next year, the seeds, soil and chemical fertilizer should be sterilized before planting. In the early stage of the disease, carbendazim can be diluted and then irrigated or sprayed.
Common cotton diseases and insect pests and control methods
2. Verticillium Wilt of cotton
There is only one word difference between Cotton Verticillium Wilt and Fusarium wilt. We can get from the name that when cotton Verticillium wilt occurs, the leaves lose water, and yellow patches appear on the leaves. With the spread of the disease, the disease spots gradually expand. After long-term drought and rainstorm, the leaves suddenly withered and then fell off.
Control methods: choose varieties with strong disease resistance, avoid continuous cropping, and it is better to rotate with other crops to reduce the occurrence of diseases. Spray growth regulators such as suojiean in budding stage, and regularly spray pesticides such as mancozeb or methylthio thiram to prevent diseases.
Common diseases and insect pests of cotton and their control methods
3. Cotton aphid
Cotton aphids mainly harm cotton seedlings. Aphids suck sap from seedling leaves, causing seedling leaves to shrink, resulting in abnormal growth and development, affecting flowering and boll stage, resulting in late maturing and yield reduction.
Control method: spray insecticides with less harm to plants.
Common cotton diseases and insect pests and control methods
4. Cotton bollworm
Cotton bollworm mainly damages the bud and boll stage of cotton. Cotton bollworm gnaws on the bud, boll and tender stem of cotton, resulting in flowering failure, bract shedding, Boll Rot and other phenomena, and ultimately affecting the quality and yield of cotton.
Control method: spraying insecticides with less harm to plants.
Common cotton diseases and insect pests and control methods
The above is the pro agricultural network for you to bring common cotton diseases and insect pests and control methods, I hope this paper can be helpful to planting or want to plant cotton friends, prevention of cotton diseases and insect pests is the key to achieve high yield and high yield of cotton.