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In general, the best time is before 10:00 in the morning and after 4 in the afternoon. Because the dew is basically dry before and after 9 am, and the temperature is not too high, it is the time when sunrise pests are the most devastating. Therefore, the spray will not dilute the liquid concentration due to dew, nor will it be due to temperature. Too high to cause the drug to decompose and volatilize and reduce the efficacy. After 4 pm, when the sun is westward, the light intensity is relatively weakened, and nocturnal pests are about to start their activities. At this time, the spraying has high insecticidal rates just before its damage.
If you spray at noon, the effect is not good. First, high temperatures cause pesticides to decompose and evaporate, insects smell the smell of drugs to escape, and long-term operators can easily cause poisoning; second, strong sunlight, most of the pests hide behind the leaves of the leaves, or even stop activities, after the drug spray insecticide The rate is much lower; in addition, high light intensity can also cause decomposition of drugs and reduce efficacy. It is also preferable to spray the growth regulator on the pot bonsai at the above time.
The best time to spray pesticides in summer
Summer is a suitable period for the growth of many crops, but due to the high temperature and good sunshine, it is also the most prosperous period for pests. For this reason, when spraying pesticides and plant growth regulators, it is essential to maximize the efficacy and to master the best spraying time.