What to do if the rose powdery mildew cannot be cured?
For many girls, the experience related to the cultivation of flowers when the rose powdery mildew cannot be cured, the site editor will introduce to netizens next.
If you like roses very much and plan to raise them, then you should be prepared to face rose diseases. Maybe flower friends will ask: Can't we choose rose varieties with good disease resistance?
Of course, it is possible. In fact, the popular rose varieties on the market right now are all varieties with strong disease resistance. However, being disease-resistant does not mean that they won't get sick. The disease resistance of roses is actually the same as our human body's immune system. Have you ever seen someone say that they have good immunity and don't have any diseases or pains?
Different cultivation environments are really difficult to avoid for rose pests. For example, it is easy to get red spiders when growing roses on the balcony due to poor ventilation, stuffiness, and dryness.
Roses grown outdoors are also prone to black spot disease and powdery mildew due to rain or high humidity.
In fact, it is not scary at all for roses to get sick. What is scary is that flower friends don't know how to treat them.
That's why some flower friends told Lantian that their rose got powdery mildew and couldn't be cured no matter what they did, even after applying pesticides, it didn't work, and even washing didn't help. They were really desperate and wanted to throw it away.
In fact, there's no need for that. Many times, the lack of effect is because our methods are incorrect.
Characteristics of Fungicides for Powdery Mildew
What to do if the rose powdery mildew cannot be cured?
The manifestation of powdery mildew on roses is that some white powder adheres to the leaves, starting on the back of the leaves and gradually spreading to the front of the leaves, stems, and buds.
Rose leaves with powdery mildew will show a tendency to curl inward. During the cultivation process, one should pay attention to observe. If the leaves of roses are curly, attention should be paid to the back of the leaves to see if there is white powder.
The bacteria of powdery mildew are not easily contaminated by the pesticide solution, which makes it more difficult for us to treat powdery mildew. That's why many flower friends find that the effect is not very ideal when using carbendazim or myclobutanil to treat powdery mildew on roses, mainly because the pesticide solution does not easily adhere to the bacteria of powdery mildew.
Therefore, when using drugs for treatment, we need to add an expansive adhesive, usually using blue zinc omethoate, or a small amount of laundry detergent water can be used as a substitute to increase the expansiveness and adhesiveness of the pesticide solution.
When treating powdery mildew on roses, one should also pay attention to the continuity of time. Don't think that one spray is enough. If you think and act like this, you will be repeatedly troubled by powdery mildew.
The treatment of powdery mildew on roses should be persistent in medication. Apply the pesticide once every 5-7 days, and after three or four times, you can see obvious results.