Sweet And Spicy Flavor Kimchi,Fermented Pickled Vegetables,Korean Green Chili Kimchi,Spicy Cabbage Kimchi Yanbian Jingangshan Food Co., Ltd , https://www.ybjgsfood.com
Use of biological pesticides should pay attention to environmental conditions
Biologic pesticides, also known as bacterial pesticides, have high insecticidal rates, do not pollute the environment, do not poison humans and animals, and do not induce pest resistance. The biocide's insecticidal effect is mainly related to the number of bacteria and its activity. When it is used, it has strict requirements on the environmental conditions. To improve the control effect of biopesticides, attention should be paid to the following points: 1. Attention to temperature conditions: biological agents The suitable temperature for spraying pesticides is above 20°C, because the active ingredients of biological pesticides are protein crystals and living spores. At low temperatures, spores propagate slowly in pests, and protein crystals do not work well. According to experimental studies, the efficacy is about 2 times higher than that of 10-15°C at 25-30°C. 2. Pay attention to the humidity conditions: The use of bio-agent pesticides, the higher the environmental humidity the higher the efficacy, especially when using powdered biological agents, only in high humidity conditions, the efficacy can be fully exerted. The reason is that the bacterial spores are not resistant to the dry environmental conditions. Therefore, the spraying of the bacterial powder should be carried out in the morning and evening when there is dew, so that the fungicide can be better adhered to the stems and leaves, and promote the propagation of spores. Pest contact opportunities. 3. Pay attention to the sunshine conditions: The ultraviolet rays in the sunlight have the effect of killing spores, and the ultraviolet rays also have the effect of deforming and reducing the effect on the parasporal crystals. In order to avoid the destructive effect of ultraviolet light in the sun, it is best to apply after 4 pm or on cloudy days. The addition of crude sugar or corn seminal plasma to pesticides has a certain effect on the filtration of UV light. 4. Pay attention to the rain conditions: moderate to heavy rain will flush out the bacteria liquid sprayed on the leaves, reducing the efficacy. However, if light rain occurs 5 hours after the application, it will increase the efficacy, because light rain at this time is beneficial to spore activity and will accelerate the death of pests.