The hyssop is a perennial herb plant, the main stem can not be healthy and happy growth associated with the merits of the Chinese medicine, I provide you with a detailed description of its most common types of diseases and pests and methods of prevention and control, I look forward to some assistance to you.

Root rot

Harming the roots, the roots become dark brown, water stains, slowly rotting, the ground stems and leaves slowly withered.

Prevention methods: (1) reduce environmental humidity in the field, pay attention to the dredging of drains and sewers; (2) at the onset of the disease, with 50% triazolone 1000 times liquid, or 5% aluminum chloride drenching hole.

Nematode

Harming the root, so that the root caused a tumorous gall, the loss of the role of the evacuation of nutrients, jeopardizing the production and the quality of Chinese herbs.

Prevention methods: (1) the implementation of crop rotation, preferably water and drought crop rotation; (2) soil layer in the turning of the ground to carry out sterilization solution: 1 mu of 3% hydroxyisothionophos 5KG, sprinkled on the bed, turned over and buried in the soil.

Inchworm

Biting leaves, hiding and fraudulent.

Methods of control: (1) use of fraudulent death, to carry out manpower hunting; (2) spraying with 90% trichlorfon 1000 times liquid.

Red spider, toon weevil

Appears in May-June, harming the shoot tips and leaves.

Control and prevention method: spraying with 40% Rogaine 1000 times liquid.

Bull's knee leaf spot disease

Also known as bacterial infection black spot disease key to harm the leaves and leaf stems. In the early stage of leaf disease, there are many watery dark green circular to heptagonal small color spots on the leaf blades, and then slowly expand, dark brown to dark brown heptagonal spots appear between the petioles, and the leaf stems become withered and slightly curled.

Control: Remove as many diseased leaves as possible to reduce the source of the fungus. If necessary, spraying 30% of the green land to protect the granules 400 times, or is 1:240 agricultural streptomycin, 77% of the can kill the wettable powder 500 times or 60% of the amber fertilizer acid copper wettable powder 500 times, every 10 days under the next time, prevention and control 2-3 times.

Silver moth

An omnivorous insect pest, if the control is not immediate, the young leaves, leaves, flower bones are often eaten, resulting in the main stem leaf curl withering.

Prevention methods: before the 3rd age of the young insects, spray 90% trichlorfon 800-1000 times liquid or with 50% phoxim 1000 times sprayer, every 10-14 days, continue to spray 2-3 times.