Common mistakes in the use of microbial pesticides

Microbial pesticides have been paid more and more attention in the pollution-free cultivation of vegetables and fruits.In order to improve the use effect of microorganism in vivo, we should be careful of mistakes when using it.

myth 1

The temperature is too low when applied.Some farmers in the use of microorganisms living pesticide, don't pay attention to the environmental factors, don't choose the high temperature weather conditions applied, even in winter and early spring cold weather conditions applied, so did not achieve the expected control effect.This is because biological pesticides require a high temperature when applied.Tests show that between 25 ℃ ~ 30 ℃, microbes living after spraying pesticide control effects than in 10 ℃ to 15 ℃ between 1 to 2 times higher.

Myth 2

Apply in dry weather.For example, the application under high temperature and dry weather conditions from 10am to 4pm in sunny days is not well received by farmers.This is mainly due to insufficient environmental humidity.It is best to apply on cloudy days, after rain or in the morning when humidity is high.

Myth 3

Avoid the sun.Did not avoid the high temperature, strong sunlight applied at noon, resulting in a decline in efficacy.Microorganism live pesticide, most afraid of strong sunlight exposure.The ultraviolet ray in sunshine has a deadly killer effect on spore, and ultraviolet (uv) radiation on with spore crystals can also produce deformation effect, four o 'clock in the afternoon, so want to choose or cloudy day after use, the effect will be greatly.

Myth 4

Heavy rain washed away after use.Spores are most afraid of being washed away by heavy rain, which can wash away the applied liquid.If after spraying (5 ~ 6 hours) in light rain, not only will not reduce the efficacy, it can improve the control effect, because the light rain on spore germination was favorable, pests, once the food will accelerate the death.Therefore, the application time should be determined according to the weather forecast.

Myth 5

Mixed with fungicides.For example, truffle fungus, as a kind of fungus insecticide, the efficacy is achieved by the active spore action of truffle fungus.After the application of live spores infected aphids and died, sustainable transmission, resulting in a large number of deaths.But as a living fungus, if mixed with pesticides, they are killed by fungicides and naturally lose their insecticidal effects.