Common diseases and treatment methods of Paeonia lactiflora

Peony is a kind of sun-loving and drought-tolerant plant, colorful colors can always give us different visual conflicts, but no matter how beautiful and delicate flowers can not escape the damage of diseases, what can we do to solve these problems when various diseases occur? The following editor gives examples of several common disasters to give solutions. If you have friends who encounter the following difficulties, you don't have to worry about not being able to solve them.

1. Black spot

Black spot is one of the more common diseases of peony, the main damage site is the leaf, the early stage will form a certain spot in the leaf, and then begin to spread, and finally lead to leaf shedding and death, the onset time is mostly in July-September. After autumn, attention should be paid to cleaning up the dry branches and leaves to avoid infection. After infection, the infected part should be raised first, and then the 500-fold solution of 40% germicidal Dan wettable powder or 58% metalaxyl manganese-zinc wettable powder can be sprayed 500-800 times.

2. Powdery mildew

Powdery mildew is a kind of peony disease which is difficult to find in the early stage of the disease. It is generally more serious in the more secret branches and leaves, and so on. The symptoms are that the leaves will be covered with white filaments, and there will be white mildew spots on the rhizomes and petioles. Then how to prevent it? The parts that are usually difficult to observe should be carefully observed in the early stage, and then the location of the disease should be treated in time after discovering. After treatment, the wound should be sprayed with 80-1000 times of thiophanate-methyl wettable powder or 80, 000, 000 times of 40% Fuxing EC. Do a good job of ventilation to prevent secondary infection.

3. Rust

Rust is one of the common and easy-to-find diseases of peony, which pays more attention to protection. When the disease usually first appears on the leaves, it will produce yellow spots, and then something similar will slowly appear on the back, resulting in a large number of withered leaves. The diseased implant must be kept away from the disease-free body. The time of onset is concentrated in May, and can be treated with 97% sodium rust 400 times or 62.25% Xiansheng 600 times 800 times.

4. Leaf mold

Leaf mildew is one of the more serious peony diseases, which can easily lead to the wilt of the whole plant. Purple-brown spots will appear on the leaves at the initial stage of the disease, and then slowly turn into a dark green mildew, and even spread throughout the plant. The time of onset is mostly concentrated in the days with high humidity from July to August, so the planting density must be large and good ventilation must be maintained. After the onset of the disease, it is generally solved by spraying 40% carbendazim glue suspension 600 times or 50% methyl topiramate 800 times solution.

The above are some common disease treatment methods of peony. In fact, after reading, we will find that peony has more strict requirements for planting density and ventilation. The second is the treatment of the pathogen after the disease, the pathogen part must not let it come into contact with the plant again. I hope these methods can provide you with useful information, and you will continue to pay attention to the pro-agricultural network.