As the temperature rises, the occurrence of insect pests is more serious, many vegetable farmers feel that on the insect net, the use of sticky insect boards, pests must be less, they neglected management, the result is a few days, the pest infestation in the shed broke out into a disaster. Recently, when the reporter interviewed in Jiahe Village, Tanfang Town, Qingzhou City, Shandong Province, the watermelon leaves in the vegetable farmer Master Zhang's shed were densely cobwebled, and the leaf mites were already very serious. In the process of interviewing every year, the reporter will encounter the outbreak of leaf mites, many vegetable farmers have sprayed many times, the treatment effect is not good, then such a serious pest can still be cured?
Do a good job in pharmaceutical prevention and control
After a pest outbreak, pharmaceutical control is the fastest and most effective method.
1. Foliar spray control scheme: acetazole alfronitrile or butyrofluoride ester, with biphenylhydrazine ester, fiproclamide, vegetable essential oil (Wilder), etc. Spray thoroughly, 2-3 times continuously, at intervals of 4-5 days. Leaf mite drugs basically have no systemic conductivity, the drug does not directly touch the insect body eggs will not have an effect, and the leaf mite occurs the most is the leaf stalk on the back of the leaf, which is more difficult to spray, so the spray must be meticulous and thoughtful to ensure full infiltration.
2. Supporting management scheme: leaf mites and other like high temperature and drought environment, when the humidity is larger, reproduction is affected, it is recommended to water immediately after spraying, improve humidity, inhibit leaf mite reproduction.
Ongoing management
When changing vegetable stubble, carry out a comprehensive high temperature smouldering shed to kill the leaf mites in the shed. Weeds and vegetables outside the shed are cleaned up in time to avoid the re-infestation of leaf mites.