What pesticide should be used for the red dew on apple trees?
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What pesticide should be used for the red dew on apple trees?
The red dew on apple trees can be sprayed with medium-methyl virescens, validamycin, or polyoxin on the plants. The red dew period refers to the time when the center flower bud of the apple tree starts to turn red to the initial stage of flower separation. It is very susceptible to bacterial infections at this time and needs to be treated with pesticides in a timely manner for prevention and control.
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