Common diseases of radish and their control methods

Brown spot of radish

The harm of brown spot disease

Brown spot disease, also known as red spot disease, mainly harms the growth of leaves. When the disease occurs, the spots on the leaves are very circular, the edges of the leaves are purple-brown, and the middle of the spots are yellow-brown and slightly sunken.

Brown spot disease prevention and treatment

The plants can be planted appropriately densely to improve the ventilation and light conditions of the plants, and excessive watering and excessive application of nitrogen fertilizer should be avoided. You can also spray thiophanate-methyl or cypermethrin in the early stage of the disease to prevent and control brown spot disease.

Botrytis cinerea

The harm of gray mold

The disease usually occurs in the middle stage of the plant's growth, causing damage to the spider's leaves, petioles, and inflorescences. It starts with water-stained spots, which spread rapidly and cause leaf rot. The infected leaf stems can easily break.

Prevention and control of gray mold

It is necessary to strengthen fertilizer and water management, appropriately increase the amount of phosphorus and potassium fertilizers applied, and improve the disease resistance of plants. In the early stage of the disease, you can spray cyproconazole or benomyl to prevent and control gray mold.

Chrysanthemum rot

Damage caused by seedling rot

Seedling rot will damage the base and leaves of seedlings. Infected plants will easily fall over and their leaves will fall off.

Prevention and control of seedling rot

It is necessary to promptly remove diseased plants, add water appropriately, drain stagnant water in time, and reduce soil humidity. In the early stage of the disease, you can spray DuPont or ethylene phosphate mancozeb to prevent and control seedling rot.

Chrysanthemum leaf spot

The harm of leaf spot

It mainly harms the leaves of the plant. The lesions are round or nearly round, and small black particles will appear in the infected areas in the later stage.

Leaf spot control

The plants can be cultivated on high ridges or beds. During the rainy season, attention should be paid to timely drainage to reduce soil humidity. In the early stage of the disease, you can spray carbendazim or benomyl to prevent and control leaf spot disease.