Spodoptera frugiperda is a new pest in the seedling stage of summer corn, and has become a frequent pest of summer corn in Huanghuaihai area. It is the continuation of straw returning to the field and the accumulation of no-tillage sowing that has led to outbreaks of pests that seriously damage summer corn. The lighter ones cause the lack of seedlings and ridges, and severely lead to the destruction of the seeds. It is the key to prevention and control to prevent the occurrence of the insect. Disclaimer: Some articles of this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for processing. phone Biologics are drugs made from complex molecules manufactured using living microorganisms, plants, or animal cells.Anti-rabies Vacine for Human is a preparation of rabies fixed virus CTN-1V inoculated into Vero cell , which is used for the prevention of the rabies disease. Biological Product,Rabies Symptoms Human,Human Rabies Symptoms,Human Rabies Signs Changchun Zhuoyi Biological Co., Ltd , https://www.zhuoyibiological.com
Ecological Prevention and Control of Two-point Spodoptera frugiperda First, wheat is harvested with low wheat stubble, the height is not more than 15 cm, the wheat straw is finely crushed to below 5 cm and scattered and scattered. In this way, the wheat straw will naturally fall between the wheat stubble, and a large number of gaps cannot be formed between the wheat straw and the wheat stubble, which reduces the space for adult insects to gather and significantly reduces the harm. The current wheat harvester has this function, especially the wheat has a good maturity, and the harvest effect is better in dry and hot weather at noon, which is suitable for large-scale popularization and application.
Secondly, after the wheat is harvested, the wheat straw in the field can be removed in a conditional place, and it can be used for papermaking, etc., and the night worm can not be harmed without the wheat straw covering. Similarly, after the wheat is harvested, rotary tillage, especially stubble stubble, is used to crush and compact the surface wheat straw and stubble with the stubble stubble, and the adult insects cannot migrate into the spawning hazard. The prevention and control rate of this method can reach 100%. Crushed immediately after harvesting, otherwise the adult worms have laid eggs in it and can be harmed. Wheat stubble removal technology has always been a key technology for controlling Spodoptera frugiperda, suitable for large-scale promotion. For wheat straw stalks to be sprinkled, it is also possible to eliminate only the places where there is wheat straw, which can also greatly reduce the workload in the field.
Third, remove the wheat straw from the corn planting row. After the corn emerges, if there is no wheat straw surrounding the tree, you will not suffer from the damage caused by Spodoptera litura. The corn row rotary tiller planter, corn row deep sowing planter, or the horizontal distance between the opener and the fertiliser can be adjusted from the original 5 cm to 10 cm to increase the width of the corn planting row. Many areas that are still covered can be supplemented by manually pulling apart.
Field control focuses on timely detection of damages. If ecological prevention and control are not well done, how to prevent damages in the field in time? Spodoptera frugiperda prefers shade and moisture. If the field is wet when the wheat is harvested, the adults will immediately gather to lay eggs. The wheat harvest or corn planting begins 10 days, and go to the field to observe whether there are two small larvae of Spodoptera litura under the wheat straw, and the third instar larvae are about 5-6 mm long. It is also important to see if the corn heart leaves are wilted. If there is wilting, pull the wheat straw to see if there are holes in the base of the stem. The best way is to spread poison bait, it is best to stir-fry wheat bran, mix with chlorpyrifos, toxin, or insecticide, etc., sprinkle 3~5 grams next to the corn around the wheat straw, and it will serve For better results, the key is to discover the damage in the field in time, and timely irrigation with conditions can also reduce the damage.