What medicine is used for black spot disease of rose flowers?
Rose is very good-looking, but it is also easy to get sick. If rose is planted outdoors, it is easy to get black spot once it is caught in the rain. What medicine should be used for rose to get black spot?
Rose infected with black spot can be treated with DuPont Fuxing plus Dysen zinc, remove all the diseased leaves of the rose, and then spray on both sides of the remaining leaves several times. Black spot is a common fungal disease of rose, which is mainly caused by rain. Ensuring that rose flowers are not drenched in the rain can effectively prevent rose black spot disease.
I. other chemical control
1. Besides DuPont Foxing, Dysen Zinc and Trichoderma harzianum, the main drugs used in rose flowers are Trichoderma harzianum. Regular inoculation of Trichoderma harzianum against harmful fungi can also prevent black spot disease.
2. Spray methyl topiramate regularly to make the rose ventilated and bask in the sun, which can also reduce the probability of suffering from black spot in rose.
II. Physical prevention and control
If you are growing roses outdoors, the best way to prevent black spot is to avoid the rain, spread plastic film when it rains, or build a simple rain shelter. If it is really impossible to avoid the rain, then the first time after the rain to give medicine to the rose, which can also effectively prevent the rose from getting black spot.
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