Harm of brown spot disease

Brown spot, also known as red spot, mainly harms the growth of leaves. At the time of onset, the lesion on the leaf is round, the edge of the leaf is purple-brown, and the lesion is yellowish brown and slightly concave in the middle.

Prevention and treatment of brown spot disease

Can be densely planted, improve the ventilation and light transmission conditions of plants, and avoid excessive watering and nitrogen application. You can also spray chlorothalonil or sukeling at the early stage of the disease to prevent brown spots.

Botrytis cinerea

Harm of gray mold

The disease usually occurs in the middle period of plant growth, which will damage the leaves, petioles and inflorescences of spiders. At first, it is water damage and other disease spots, and then it will spread rapidly, leading to leaf rot, and infected leaves and stems are easy to break.

Control of gray mold

It is necessary to strengthen the management of fertilizer and water, appropriately increase the dosage of phosphorus and potassium fertilizer, and improve the disease resistance of plants. At the beginning of the disease, it can be sprayed with sukeling or benomyl to control gray mold.

Melon seedling rot

Harm of seedling rot

Rot of seedlings will damage the base and leaves of seedlings. Infected plants collapse easily and their leaves will fall off.

Prevention and control of seedling rot

It is necessary to remove infected plants in time, replenish water appropriately, remove accumulated water in time and reduce soil moisture. At the beginning of the disease, poison spot dew or phosphorus, manganese and zinc can be sprayed to prevent rotten seedlings.

Melon leaf spot

Harm of leaf spot disease

It mainly harms the leaves of plants, and the lesion is round or nearly round, and black particles will appear at the infected place in the later stage.

Control of leaf spot disease

The plant can be cultivated in high ridges or high ridges. Pay attention to timely drainage in rainy season to reduce soil moisture. In the early stage of the disease, pythium or benomyl can be sprayed to control leaf spot.