Control of common diseases in lilies

Several common diseases of lilies: Lily mosaic disease, bulb rot, spot disease, leaf blight and so on.

Mosaic disease is also called lily latent mosaic disease, when the disease occurs, the leaves appear uneven chlorotic spots or withered spots, the injured plants are short, the leaf edges curl, the leaf shape becomes smaller, and sometimes fusiform light brown spots appear on the petals, flower deformities, and not easy to open.

① selected virus-free bulbs to remain seeds; ② strengthened the control of aphids and leafhoppers; ③ found diseased plants were pulled out and destroyed in time.

At the beginning of the disease, there are small faded spots on the leaves, brown spots after expansion, and dark brown edges. After that, there are many small black spots in the center of the disease spot, and when it is serious, the whole leaf blackens and dies.

The control method is to remove the diseased leaves and spray once with 65% zinc wettable powder 500 times dilution to prevent spread.

After the onset of bulb rot, the bulb produced brown spots, and finally the whole bulb showed brown rot.

At the initial stage of the disease, 50% Dysenamine 300 times solution can be irrigated.

Leaf blight often occurs on leaves, producing round or oval irregular spots of different sizes, which are light yellow to grayish brown due to different varieties. When serious, the whole leaf withered and died.

Control methods ① greenhouse cultivation pay attention to ventilation and light transmission, strengthen management; remove diseased leaves at the initial stage of ②, spray 1% equal volume Bordeaux solution on the 7th-10th day, or 50% bacillus special wettable powder 800-1000 times, spray 3-4 times. (Ji Xuerui)