Soybean cultivation: what is soybean heart-eating insect? How to prevent and cure

What is a soybean heart borer? How to prevent and cure it? Please introduce the soybean heart borer, also known as the small red worm, which belongs to the family Lepidoptera, commonly known as soybean pod moth. The soybean heart borer larvae are divided into 4 instar, yellowish at the first birth, milky white after peeling into the pods, the body length of the end larvae is 8 mm 10 mm, the mature larvae are red and slightly barrel shaped, and the adults are reddish brown with a body length of 5 mm 6 mm, the male moth is lighter and the female moth is darker. Soybean heart borer mainly harms soybean seeds by larvae. the larvae eat into the pods and eat the beans, the light ones eat into the rabbit's mouth, and the heavy ones can eat more than half of the beans to form a broken petal, and in serious cases, the beans are eaten up. The insect feeding rate in general years is about 10%, and in severe years it can reach 34%-40%, or even more than 80%, resulting in a serious reduction in yield and a decline in soybean quality. Soybean heart borer control methods: 1. Select insect-resistant varieties. 2. Chemical control. In the case of better ridge sealing during the adult outbreak period, 80% dichlorvos EC is used to make poison sticks, inserted every 4 rows, fumigation control; pyrethroid pesticides can also be used for spray control (if 2.5% deltamethrin EC is used at 30ml per mu, 30kg spray with water). The key period for the control of soybean heart borer is before the larvae are eaten into the pods. Click to get more soybean planting technology click to get more grain and oil crop planting technology