Winter and Spring root-eating vegetables should not be spraying pesticide at noon

The cold winter season, many farmers will choose to anti-pest spray at noon. Farmers believe that lower temperatures in winter and spring shed, humidity, quickly after spraying can not play better efficacy, spraying at noon, in the sunlight, the liquid done faster, better able to penetrate leaves, improve treatment results.

    This idea is wrong, regardless of stubble in winter and spring or summer, all drugs should be avoided in the sunny afternoon. Sunny day at noon because of the high temperature decomposition and easy for agents of volatile liquid in the water, the weather than the hot, chemically active agents to strong, the toxicity of pesticides has become too big. Especially at high temperatures with the EC and a variety of herbicide spraying, it is prone to injury, and pesticide poisoning incidents.

    Be sure to avoid spraying the high temperature at noon time. In the winter cold season, time of pesticide application is appropriate in the 2:30 pm to 3:30 am is best not to medication. Because the winter and spring, the studio temperature is low, the morning dew receded leaves, photosynthesis gradually reaching a peak, if the spraying is bound to affect the temperature, the lower photosynthetic efficiency, so am not medicine. In the afternoon medication, will not impact on the temperature, which is conducive to diseases and pest control. If experiencing a continuous fine weather in winter and spring, the greenhouse temperature is high, can also be spraying after 4 pm, the same pest control can play a good bactericidal effect.