Microbial pesticides are affiliated with biological pesticides , which are of high efficiency and environmental protection. They are widely used in the industry. The main types of microbial pesticides are bacteria, fungi, viruses and antibiotics. Let's go.
1 Bacterial insecticides
Bacterial insecticides include Bacillus thuringiensis, Penicillium, etc., among which Bacillus thuringiensis (Bt) is a gastotoxic insecticide capable of producing a parasporal crystal toxin. Bacillus thuringiensis has different degrees of poisoning effects on various pests, such as cotton bollworm, beet armyworm, and small tiger.
2, fungal insecticides
Fungal insecticides are a contact microbial insecticide. The main types currently used are: Beauveria bassiana, Verticillium, and the like. Among them, Beauveria bassiana has a good effect on controlling heartworm and aphids. Paecilomyces lilacin can effectively control root-knot nematodes, and has good control effect on soybean cyst nematodes.
3. Viral insecticides
Viral insecticides are a group of insect-based virus groups. Nuclear polyhedrosis viruses and granulosis viruses are commonly used, mainly for biting pests such as Spodoptera litura and Pieris rapae.
4 antibiotic insecticides
Agricultural antibiotics are microbial pesticides that were researched and developed earlier in China, but the research and development of insecticide antibiotics has made a major breakthrough in the past 10 years. Abamectin is the most representative antibiotic insecticide known at present. This product has a wide spectrum of insecticides, is not easy to produce resistance, and has good control effects against various pests and pests. Other common ones are also There are Liuyangmycin, acaricidin, huaguangmycin, Nanchangmycin, guanomycin and meldanmycin.
Proper use of microbial pesticides:
1. At the time of application, it is necessary to grasp the egg hatching period or the larvae for the younger age. It can not only immerse the insects in the eggs or attach them to the egg shells, but also kills the larvae when they hatch, and can ensure that the pests die after feeding.
2, biological insecticides are more "active", the correct application of the environment and the use of methods are the key to its good control. For example, when applying Suyun Golden Rod Insecticide, it is generally advisable to apply the application in the evening or cloudy days of warm and humid weather, and it is strictly prohibited to use it with the fungicide or alkaline pesticide at the same time or in combination.
When using microbial pesticides, avoid placing them for a long time. They should be used now, so as not to reduce the efficacy. If you want to know about pesticides, please pay attention to the Chinese pesticide network.
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