Control methods of cornfield tiger

Ground tiger, also known as soil silkworm, soil silkworm, is not only a common underground pest, but also an important pest in the seedling stage of all kinds of crops in China. So how to control the cornfield tiger? Let's get to know it.

1. Harmful symptoms of ground tiger

After sowing corn in spring, it is the time when the adults of the ground tiger look for hosts to lay eggs, and they will choose other vegetables and weeds in addition to corn. Before corn sowing, weeds are the breeding place of ground tiger. before corn sowing, the larvae now feed in the heart leaves of weeds, and then transfer to the heart leaves of corn after corn emergence. At this time, there will be a lot of translucent spots on corn. When the larvae grow up a little, they will transfer from the ground to the underground, hide during the day, get at night, bite off the base of the stem, and the ground tiger also has the habit of transferring seedlings to harm, that is, when the injured seedlings die, they will be transferred to other seedlings to continue the harm.

2. Agricultural prevention and control

Before sowing, it is necessary to dig deep into the soil, eliminate weeds, reduce the number of eggs laid by ground tigers, and kill newly hatched larvae. Adults can be trapped and killed by insecticidal lamps, black lights, sweet and sour water, and so on. Recommend intercropping of many kinds of crops, increase conditional plant species, maintain ecological diversity, and protect the natural enemies of ground tigers. the main natural enemies of ground tigers are parasitic wasps, step beetles, tiger beetles and so on. Local tigers begin to eat stems, or when the larvae are hidden during the day, manual control is better. Look for withered and wilted seedlings in the field, pick up the surrounding soil, and dig out a large number of larvae and kill them.

3. Chemical control

In the initial stage when the ground tiger harms corn, poisonous soil, bait and spraying powder and liquid can be applied on the ground. Early detection and early control is the key to control the harm of the ground tiger. In the initial stage of the harm of the ground tiger, not only the individual is small, but also moves on the ground day and night, it is a good time to use medicine. when the damage rate of heart leaves of seedlings reaches 5%, spraying chemical control has the best effect, not only on corn, but also on weeds. You can also spread poisonous soil and bait for control, and spread it along the ridge near the seedlings in the evening to poison the larvae. It is recommended to use green, low-toxic and efficient agents, such as cinnamon scale, trichlorfon, cyhalothrin and so on.

The above is the introduction of cornfield tiger control methods, hope to help you, want to know more related knowledge, please pay attention to us.