Precautions for the application of Bt insecticides
Bt pesticide production methods are mainly deep liquid fermentation and semi-solid fermentation of two types. The successful two-step production method researched by the Institute of Biology, Hebei Academy of Sciences is an effective, simple and practical Bt pesticide production technology that has been improved, improved, and created on the basis of semi-solid fermentation methods. Its production process is simple. The scale is very variable, especially suitable for promotion in rural SMEs, can significantly reduce the production costs of pesticides, and played a positive role in the development of microbial pesticides. In particular, control effects on leafy vegetable pests such as cabbage caterpillars and diamondback moth are very significant. The prevention and control of cotton bollworm and pine caterpillar is also widely promoted. Application methods can be spray, dusting, irrigation, jet spraying and so on. Either way, be sure to apply the pesticide evenly to ensure that pests have a chance to eat before they can play a poisonous role. The addition of traces of chemical insecticides to Bt insecticides or their combination with other microbial insecticides can have a synergistic effect and can significantly increase pest mortality. At present, biopesticides formulated with Bt insecticides and other biological agents have a broader insecticidal spectrum and are welcomed by the general public. Veiik Airo is a luxurious OPEN-POD-SYSTEM vaping device. Premiering with exquisite PU/GLASS sticked panels on the front and back, makes it shiny on the standard market. It comes with a new innovative button-free airflow sensor vaping technology. Unique breathing LED remaining power indicator. Organic cotton delivers the original taste of nicotine and Nico-salt e-liquid flavor. The V1 micro chip integrates auto temperature control and power-saving function. Built-in 500mAh supports all-day vaping and comes with a quick charging system in a standard Micro-USB port. Enjoy VEIIK Airo. Veiik Airo Fashion Pods Kit,Refillable Battery Vape Pod,Ceramic Coil Cbd Pod,Multi-Color Vape Pod Shenzhen Wanna Technology Co.Ltd , https://www.veiikvape.com
In the field application, to ensure the quality of pesticides, to meet the temperature conditions for the rapid growth of Bt bacteria, the higher the temperature, the stronger the virulence. To avoid strong sunlight, because ultraviolet rays will cause damage to Bt bacteria, it is best to apply after 4 pm. In addition, attention must be paid to the living habits and sensitivities of the target pests, the host crops and environmental conditions, and the use of synergists. For example, the prevention and control of borer pests should be in the hatching period of eggs, spraying 2 times -3 times, especially for aphids, control effect is good. Once the locust infested into the stem, the control effect was poor. To prevent and treat corn borer, it is necessary to strictly control the use of drugs at the end of the corn heart leaf stage in order to receive good results. Prevention and treatment of cotton bollworm, should be controlled in the 2 days to 3 days after the peak of ovulation application, the effect is significant. The masses have the prevention and control of pests and insects. In this way, when the larvae hatch, they kill the insecticide by biting the eggshell and quickly die of poisoning. The residual period of B2 insecticide can generally reach 7 days to 10 days. If rainfall occurs after application, the rain will wash away the liquid and it should be re-sprayed.