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The best spraying time in summer
Summer is a suitable period for the growth of many kinds of flowers, but it is also the most prosperous period for AIDS and insects due to high temperatures and good light. For this reason, when spraying pesticides and plant growth regulators, it is essential to maximize the efficacy and it is important to master the best spraying time. 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 rampant. Therefore, when spraying, the dew will not dilute the concentration of the liquid. High temperatures 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. However, 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 are prone to poisoning; second, strong sunlight, most of the pests hide on the backlight surface of the leaves, or even stop activities, and the insecticide rate after drug spraying. It 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.