Bacterial pesticide application note

First, avoid using inferior pharmaceutical agents used to ensure the quality , should be regular manufacturers and pharmaceutical point of sale purchase , to prevent counterfeiting, and to pay attention to pharmaceutical production date and age as well as pharmaceutical reasonable safekeeping to prevent expired .
Second, avoid the use of low bacterial biological pesticide active ingredient is protein crystals and buds full of life . At low temperatures , spores multiply in vivo pest slow, not easy to play a role in protein crystals .
Third, avoid dry bacterial spores of bacteria in biological insecticide hi humid environment, and therefore the greater efficacy when used field humidity is higher, especially pesticide spraying powdered biological agents should pay attention to the field moisture . Usually in the early morning and evening when there is dew powder backpack chemical sprayers spraying bacteria , in order to facilitate better stick agents stems and leaves of crops and promote spores multiply and improve efficacy. In the foggy morning half an hour before spraying spraying or watering the vegetables are better.
Fourth, avoid strong sunlight sun's ultraviolet radiation on spores killing effect , if the strong ultraviolet light will kill bacteria . According to tests , direct sunlight for half an hour , about 50% mortality of spores ; direct one hour , spores mortality rate of 80%. In addition , ultraviolet radiation causes the crystal deformation Parasporal fallback . Therefore , spraying bacteria biocides should be cloudy or low light when vegetable intake . Generally before 10:00 on a sunny day or evening spraying.
Fifth, avoid spraying of bacterial biocide leaching heavy rain shortly after , in case of moderate to heavy rain , will be sprayed on the crop stems rinse off bacteria and reduce efficacy. However, if the pesticide under the rain after 5 hours , then not only does not reduce the control effect , but a synergistic effect , because it is conducive to bacterial spores in vivo and in vitro pests multiply rapidly .
Sixth, avoid mixing with fungicides when applying bacterial bio-pesticides and fungicides do not ( such as carbendazim, thiophanate-methyl and other mix , otherwise easily lead to pharmaceutical severe reduction in the number of bacteria , thus affecting the insecticidal effect . Thus, even weed killer sprayer sprayed fungicide spray should be washed clean before assembling bacterial biopesticides .