What are the dangers of red edged light moth to cowpea? What are the prevention and control measures

Drill heartworm is one of the most common pests in the growth process of carob, common beans include white carob, purple carob, cowpea and so on. In particular, cowpea itself is slender, and after maturity, there is an invasion of tender beans in the pod, and the adults of the carob borer are scattered and hidden, and the carob borer is a general term for two borers, three borers, corn borers, sugarcane two-point borers, etc., and the carob borer is also called cowpea borer, which is one of the main pests of carob. The adult cowpea borer is scattered and hidden, and the range of flying and spawning is large, and the amount of eggs is large, and it is not easy to spray and kill or trap.

Fly oviposition range is larger, the amount of eggs is more, it is not easy to kill or trap, adult eggs are wilted in the young leaves of the young shoots of the plant, the leaves are yellow and the branches are wilted or the beans are abnormal plants, push or pull the main stem to break off the insect plant, cut down or sawed down after the two insects moth bean horn is bored by the heartworm will have the following characteristics, the heartworm usually borers from the middle of the pod, and the larvae eat the seeds in the pod, and the weight of the damaged seeds is hollowed out, only the seed stalk is left, and the light one is bored into a lack of shell, and almost cannot be used as seeds. The borers inside the pod excrete feces, and the trunk is dissected or burned in a centralized manner. In order to completely remove the insect-eaten trunk of the beans, concentrate on burning or soaking in water, do not leave the young leaves in the future, and the incubation period is 5-7 days.

The larvae over 3 instars burrow into the pods and eat, and it is difficult to kill them by spraying. <>

Therefore, the control of the insect should be strengthened with fertilizer water, the insect grows yellow, up to the posterior thoracic end. Antennae pale yellowish-brown with 5 segments. The lateral angle of the dorsal plate of the prothorax is short, the anterior edge of the black spot in the service area of the dorsal plate of the dorsal plate can reach the anterior edge of the dorsal plate of the prothorax, and there are no obvious anchor-shaped light-colored spots at the end of the small shield, and there are two small round spots with yellow and white smooth at the base corner of the small shield.

Corn and rice are one of the most common pests, and the favorite of the heartworm is to eat some sweets, such as cowpea, old and white, cloud beans, are the favorite of the heartworm, what are the characteristics of the beans drilled by the heartworm? And how can we prevent it? After planting their own beans, they drill out of the cowpeas.

This pest reproduces quickly, covers a wide area, and is difficult to spread.

It mainly harms vegetables such as cruciferous, beans and green onions. The larvae eat the leaves. The first instar larvae are swarmed and dispersed after the third instar, and the leaves can be eaten into nicks, and the leaves can be eaten up in severe cases. (1) Plough and plough in time after vegetables are harvested to eradicate weeds.

2) Use a black light to trap and kill adults.

3) Timely pick out at the peak of eggs or the initial hatching stage of larvae, and destroy them intensively.

4) In the peak stage of young larvae, spray with 2000 times of dimetrical emulsifiable concentrate, 2000 times of kung fu emulsifiable concentrate, 2000 times of 5% anti-Taibao emulsifiable concentrate, 3000 times of 15% andah emulsifiable concentrate, 1000 times of Yunda Anzhi emulsifiable concentrate, 1000 times of 50% phoxanthion emulsifiable concentrate, 2000 times of dimetrical emulsifiable concentrate, 2000 times of 20% rapid killing of butadiene emulsifiable concentrate, 48% Lesben emulsifiable concentrate or 48 days of chlorpyrifos 1500 times.

After hatching, the larvae of R. rubrum first bite the lower epidermis and mesophyll of the leaves, leaving the epidermis and veins, and mottled dead spots appear on the affected leaves. After the 3rd instar, the leaves are eaten and bitten into notches. Crawls quickly.

The larvae have the habit of being a pest. The larvae of the red edge light moth swarmed after hatching, and dispersed after the third instar. Young larvae are agile.

Control methods of red-edged lamp moth: 1. Plough the land to eliminate the overwintering larvae in the topsoil or dead leaf residues. 2. Spray 500 600 times of 25% chlorpyramide No. 3 suspension solution, or 3000 times of 40% fenvalerate emulsifiable concentrate, or 2000 times of kung fu emulsifiable concentrate, or 20% emulsifiable concentrate, 3000 times of Wang Xing emulsifiable concentrate, or 20% green horse emulsifiable concentrate.

If not treated in time, it will eat all the leaves, seriously affecting the yield, usually pay attention to eradicating weeds in time, if there are eggs or larvae have been found, they should be administered in time for specific conditions.