Symptoms of powdery mildew of Weimao in Jiaodong

Jiaodong Weimu is not only an excellent evergreen tree species, but also a very excellent tree for greening. However, Jiaodong Euonymus is more prone to powdery mildew, because Jiaodong Euonymus is an excellent tree species, so we need to pay more attention to prevent the occurrence of these diseases.

Jiaodong Wei spear

Powdery mildew of Euonymus in Jiaodong mainly occurs on leaves and sometimes on young shoots. The pathogen of powdery mildew is parasitic bacteria. Bacteria are mainly parasitic on the surface of the Jiaodong spear, the infected leaves just start to grow light green spots, will soon grow white powder, white powder spots are round, but will grow on the leaves, the leaves generally will not die! When Jiaodong Euonymus seedlings got sick, the leaves changed from light green to thin, even twisted, and the growth of young seedlings was not very exuberant. Powdery mildew in Jiaodong was caused by conidia, and the initial infection was carried out, and the conidia were repeatedly infected by wind transmission. The seedlings will be infected with each other as soon as the paper grows. In this case, the seedlings will be infected if they are dry or overwatered.

Symptoms and treatment of powdery mildew in Jiaodong

Today's young people are not familiar with trees and flowers at all, and some of them can even be unfamiliar. Below, I will popularize the knowledge about Jiaodong Wei Spear!

Basic knowledge of Elymus in Jiaodong

Jiaodong Euonymus belongs to Celastraceae, it is an excellent species of evergreen trees! Its place of origin is China, Soviet Union, Japan! It is an excellent tree for greening! The morphological characteristics of Jiaodong Euonymus are: evergreen shrubs or small trees, dense branches, crown ball shape, smooth branches, emerald green, small branches close to tetragonal, oval leaves with obtuse angles, dark green and bright surface!

Ecological habits of Euonymus in Jiaodong

Jiaodong Wei Spear is not very strict on the soil, it is very adaptable, cold-resistant, drought-resistant, and can be trimmed and shaped! The garden is often used as a green fence, which can not only be cultivated around courtyards, streets and buildings, but also used in the green belt of main roads! Jiaodong Euonymus is also very resistant to a variety of toxic gases, and can absorb and purify the air, resist smoke and dust, and is an ideal greening tree species in polluted areas.

Symptoms of powdery mildew in Jiaodong

Powdery mildew of Euonymus in Jiaodong mainly occurs on leaves. Sometimes it also occurs on young shoots, and the pathogen of powdery mildew is an idiophytic parasite. Bacteria are mainly parasitic on the surface of the Jiaodong spear, the infected leaves just start to grow light green spots, will soon grow white powder, white powder spots are round, but will grow on the leaves, the leaves generally will not die! When Jiaodong Euonymus seedlings got sick, the leaves changed from light green to thin, even twisted, and the growth of young seedlings was not very exuberant. Powdery mildew in Jiaodong was caused by conidia, and the initial infection was carried out, and the conidia were repeatedly infected by wind transmission. The seedlings will be infected with each other as soon as the paper grows. In this case, the seedlings will be infected if they are dry or overwatered.

Control methods of Weimu powdery mildew in Jiaodong 1. Where the pathogen is serious, the residual bacteria should be eliminated in time and continuously, the source of the pathogen should be eliminated, and the overcultivation between plants should be prevented.

2. During the growing period and the initial stage of the disease, 0.2-0.3 degree stone-sulfur mixture should be sprayed. Spray every semimonthly

3. During the onset period, 25% trimethoprim and 1000-1500 times liquid of wettable powder, 50% carbendazim and 1000-fold liquid of wettable powder can be sprayed, once every 7-10 days or continuously for 2-3 times.

Jiaodong Wei Spear is an important variety in China's greening industry, but what is needed to cultivate it is a sense of patience and responsibility! His most common fungal infection is powdery mildew, which develops rapidly and spreads quickly. So people who cultivate this plant can take a look at the specific treatment methods introduced in the article! Give another blue sky to the motherland!

Symptoms and control methods of Weimu powdery mildew in Jiaodong

The powdery mildew of Euonymus in Jiaodong mainly occurred on the leaves. Sometimes it happens on the twigs.

Hazard characteristics

The pathogen of powdery mildew is an exclusive parasite. The mycelium is planted on the surface of the host, on which there are conidiophores and conidia.

Symptom

The damaged leaves are born with light green spots, which soon grow into white powder, and the powder spots are round and continuous, and the leaves generally do not die. When the seedlings get sick, the leaves are light green and thin, even twisted, and the seedlings do not grow vigorously.

Morbidity regularity

Weimu powdery mildew pathogen in Jiaodong overwintered with conidia and carried out primary infection, and conidia were repeatedly infected by wind force. Seedlings and sprouting strips and young leaves of the same year are prone to disease; closely planted leaves squeeze each other, which is conducive to bacterial infection; seedlings or too much nitrogen fertilizer and water in a dry state are easy to get sick.

Prevention and cure method

1. In the seriously affected areas, timely and continuous elimination of disease and debris, elimination of the source of bacteria, prevention of over-dense plant cultivation and timely pruning of hedges should be achieved.

2. 0.2-0.3 degree stone-sulfur mixture was sprayed during the growing period and the initial stage of the disease. Spray once every half a month

3. During the onset period, 25% trimethoprim wettable powder 1000-1500 times liquid, methyl topiramate wettable powder 1000-1500 times liquid or 50% carbendazim wettable powder 1000 times liquid can be used for prevention and treatment every 7-10 days, and the medicine can be used continuously for 2-3 times.