Why don't you take precautions against black spot when it comes?

This is the 890th day of the Blue Devil's daily original article.

Rose culture series: the 87th article

Recently, there seems to be more and more Rain Water. I wonder if you have this feeling?

Yesterday in the fruit store saw red bayberry, then remembered, it seems that the "Meiyu" mode is about to open. No wonder the weather is always wet and rainy these days.

For our beloved rose, the Meiyu season is not a comfortable season. Due to the frequent occurrence of Rain Water, rose black spot is easy to break out.

What is rose black spot?

Rose black spot is a worldwide disease, which mainly harms the leaves of rose, forming irregular black or brown spots on the leaf surface, which will cause the whole leaf to fall off when the disease is serious.

For rose, the destructive power of black spot is huge, which directly affects the quality of flowering in autumn and spring.

Because the rose likes light very much, it needs leaves for photosynthesis. if the leaves fall off infected with black spot, it will seriously affect the photosynthesis of rose, which will lead to thin growth and affect flowering.

The high incidence period of black spot:

In the rainy season is the season of high incidence of black spot, if the plants infected with black spot are not treated, after rain, the spores of brown spot will spread rapidly and infect other leaves and plants.

Therefore, it is necessary to do a good job of prevention in the rainy season when black spot disease occurs frequently.

Prevention and control of black spot:

Now is the high incidence of black spot season, should be regular medication to prevent, prophylactic medication can be used Dysen zinc.

If it is found that the rose has been infected with black spot, the diseased leaves can be cut off, and then sprayed with drugs to treat black spot, such as nitrile, carbendazim, fluorosilazole, carbendazim, and so on.

Black spot disease should be mainly prevented and should be prevented with Dysen zinc after every rain.

When using drugs in treatment, for seriously infected plants, two kinds of drugs can be used at the same time to enhance the therapeutic effect. When spraying, spray the whole plant and basin soil.

For those who breed rose outdoors, please remember: fertilize before rain and medicine after rain.

Before the rainy season comes, take action quickly and do a good job in the prevention of black spot. Please follow my Wechat account: blue Devil Garden (Blue Devil Garden).