How long are you not afraid of the rain when you play herbal medicine?
Do you need to spray again when it rains with herbs? Many friends have this doubt in their hearts, if they do not spray again, they are afraid that the medicine will be washed away by rain, which will not have any effect. if they are re-sprayed, they will be afraid of drug damage. So how long are you not afraid of rain when you play herbal medicine?
Generally speaking, if it rains every 4 to 5 hours, there is no need for supplementary spraying. If it is a contact insecticide, it does not need to be sprayed every 3 hours. If it is an internal inhalation type, the efficacy will be discounted, and it is better for fungicides to rain 5 hours after application. However, some fungicides do not need to spray under drizzle, so according to the actual situation, there is no unified standard.
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