Measures to prevent Cucumber Diseases and insect pests from five Common Diseases in planting Cucumber

Cucumber is a widely cultivated annual trailing or climbing herb of Cucurbitaceae, which is very suitable for balcony garden! In the process of its growth, aphids, root nematodes and other diseases and insect pests are very easy to appear. The following Juqiao network editor will introduce the symptoms and control methods of diseases and insect pests in the process of cucumber planting.

Basic information about cucumber Chinese name cucumber cultivation difficulties simple growth cycle of about 60 days the main diseases downy mildew, powdery mildew, brown spot, anthrax, gray mildew main pests aphids, whitefly, spider mites

For those who want to grow cucumbers on the balcony, here are the key points to protect cucumbers from disease.

Types of diseases affecting the growth of cucumber

Many diseases of cucumber are symptomatic, and it can be said that it is easy to prevent diseases if you pay attention to observation in the process of planting.

Pay attention to high temperature and high humidity. It is important to provide fertilizer regularly by improving ventilation / drainage.

Downy mildew

Downy mildew is a disease that turns brown along the veins and gradually becomes light brown or grayish white. Leaves become very fragile when they are dry and become sticky when they are wet. The accessory lesions can be connected until the disease spreads all over the leaves.

Downy mildew likes humidity, which occurs at a temperature of 15 to 20 °C. It is caused by pathogens contained in the soil, which are spread by wind and rain. The symptoms occur in the lower lobe, which is characterized by a gradual spread of the leaves.

Powdery mildew

Form spots on the leaves, grow like white mold and eventually die. Powdery mildew is likely to occur in high-temperature and low-humidity environments (many from April to October) and is likely to occur when the temperature is between 17 and 25 ℃. It's hard to happen in mid-summer and mid-winter.

Brown spot disease

Small brown spots appear somewhere before the symptoms begin. Spread out in concentric circles, resulting in black leaves on the spots, and then fallen leaves. Brown spot disease is more likely to occur in hot and humid environments, such as continuous rainy days or deteriorating ventilation.

Anthrax

Anthracnose occurs not only in leaves and branches, but also in cucumber fruits.

The small dark-brown spots spread concentratedly, and the inside of the spots turned into large gray spots of gray. As the symptoms progress, a hole is formed in the center of the lesion area. Black soot spots will spread and cause decay and fruit drop.

Tip: anthrax is easy to occur in hot and humid environment, which is easy to occur in Rain Water in the rainy season.

Grey mold disease

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Botrytis cinerea is a disease that occurs in flowers, young fruits, leaves and curly hair. If it happens on the leaves, it will turn into brown round spots and gray mold. It is easy to get sick when the temperature and humidity are about 20 ℃, or when it is suddenly cold.

Measures against disease measures for downy mildew

In order to prevent downy mildew, try to avoid rain, improve ventilation and drainage, and avoid excessive moisture. This is also one aspect of eliminating fertilizer loss.

In the early stages of development, observe that if symptoms spread, medication should be used as soon as possible.

Tip: sprinkle the medicine around the leaves when using the medicine.

Measures to prevent powdery mildew

The treatment of powdery mildew is not difficult, and the use of preventive spray made from commercial vinegar is effective.

When the symptoms are mild, the infected leaves are torn and the state can be seen. If the symptoms spread, spray dilute vinegar with water and baking soda every other week. If the symptoms do not disappear, it is necessary to use medication to control, otherwise it will cause leaf death.

Brown spot anthracnose gray mold countermeasure

It is important to improve sunshine and ventilation. Scientific fertilization, formula fertilization, more application of organic fertilizer, organic fertilizer should be fully mature before application. The application of chemical fertilizer should be appropriate and uniform, and the residual chemical fertilizers such as ammonium sulfate should be applied as little as possible to reduce the concentration of soil solution.

Prevention is important to disease.

Once the strain gets sick, it may become the source of infection of other strains, so it is necessary to prevent the disease anyway.

Diseased leaves should be removed in the early stage, and once symptoms are found, control them as soon as possible. Regular fertilizer and preventive nutrition are also important.

The above are the prevention and control contents of cucumber diseases and insect pests introduced by the editor of Juqiao Network, especially in the rainy season, to protect cucumbers from diseases, and to eliminate diseases and insect pests in time once they occur. If you also want to know more about the planting tips of potted cucumbers in the balcony vegetable garden, please continue to browse the other contents of this website!

Time: 2019-05-08 Click: