How to use biological pesticides according to climatic conditions
Bacterial pesticides are biological pesticides with high insecticidal rate, no pollution to the environment, no poisoning of humans and animals, and no resistance to pests. However, the insecticidal action of bacterial pesticides is related to the number and activity of bacteria, and the climatic conditions are very demanding when used. To improve the efficacy of bacterial bio-pesticide, the following issues must be observed when using.
Temperature conditions: The suitable temperature for the spraying of bacterial biopesticide is between 20 ° C and 30 ° C. This is because the active ingredients of such pesticides are protein crystals and living spores. At low temperature, the spores grow very slowly in the pests, and the protein crystals are not easy to act. The bacterial biologic pesticides are applied above and below the conditions of 25 ° C - 30 ° C, and the drug efficacy is 102 times higher than that at 10 ° C - 15 ° C.
Humidity conditions: The use of bacterial bio-pesticide , the greater the environmental humidity, the higher the efficacy, especially with powdered biological pesticides. Because the spores of bacteria are not resistant to monotonous environmental conditions, the sprayed bacterial powder should be carried out in the morning and evening when dew is present, so as to facilitate the better adhesion of the microbial agents to the base leaves, and to promote spore breeding and improve the efficacy.
Sunlight conditions: Ultraviolet rays in the sun have a killing effect on spores. Direct sunlight shines for 30 minutes, the spore mortality rate is about 50%, and the one-hour mortality rate is as high as 80%. In addition, ultraviolet radiation also has a deformation-reducing effect on the parasporal crystals. Therefore, it is best to apply the biologic pesticides after 5 pm or on cloudy days.
Rain conditions: medium to heavy rain can wash away the bacteria sprayed on the foliage, reducing the efficacy, the pesticide network prompts, but if it rains 5 hours after application, it will not reduce the control effect, but have synergistic effect. .
China Compression Springs Stainless Steel Compression Spring
Compression Springs,Heavy Duty Compression Springs,Stainless Steel Compression Springs,Metal Springs Compression
applicaiton: viation,automotive, motorbike, bicycle, automatic equipment, household appliance, medical device ,toy, telecommunication,computer, instrument and meter,furniture, electric tools,mold and other industries
China leading manufacturers and suppliers of Compression Springs,coil spring,compress spring coil,Heavy Duty Compression Sprins,Stainless Steel Compression Spring,Metal Compression Spring, etc.
coil spring,compress spring coil,Heavy Duty Compression Sprins,Stainless Steel Compression Spring,Metal Compression Spring
Shenzhen Lanejoy Technology Co.,LTD , https://www.compressionspring.net