Summer is the peak management period for growing green onions. According to the occurrence patterns of different types of pests and diseases, prevention should be carried out in advance to avoid the burden of management after the pests and diseases become serious in the later stage, and the effect of the use of drugs will be greatly reduced.
Green worms are common pests in green onion fields in summer. If they are not controlled well in the early stage of pests, as the green worms gradually grow up, their biting ability will increase rapidly, and they can eat through the leaves and crawl into the green onion leaves, which is what we call green onion tubeworms.
Onion tubeworms are a common agricultural pest that mainly harms allium plants, such as onions, green onions, garlic, etc. The adult is small in size, usually white or light yellow, and the eggs are oval. The larval stage is more harmful to German crops.
Green onion tubeworms can crawl into the green onion leaves and become green onion tubeworms. At least they have reached the 4th instar stage. It is much more difficult to solve the green onion tubeworms at this stage by spraying pesticides than in the egg and larval stages.
Many onions are attacked by onion tubeworms in summer. Last year, many people stayed up late with headlamps to catch insects in the fields. Even so, onion tubeworms still come one after another and cannot be eliminated.
Because the onion tubeworms' resistance to pesticides is increasing year by year, the cost of using onion tubeworms is also increasing year by year, but they have to be treated because the onion tubeworms are really harmful to onions and reproduce quickly. When you see onion tubeworms crawling around with your naked eyes, tens of thousands of onion tubeworms have already been rampant in the onion fields, and the onion leaves are almost eaten bare. If this continues, it is obvious that the yield and quality will be reduced.
You can use chlorantraniliprole. Among all lepidopteran insecticides, chlorantraniliprole has particularly good systemicity. The strong systemicity of chlorantraniliprole enables it to be absorbed by crops, and onion tubeworms will still be poisoned and die after eating leaves. Therefore, chlorantraniliprole must be added when spraying pesticides.
