Bacterial root cancer disease is one of the most prone to root diseases in garden flowers and seedlings in northern China, which occurs mostly in the alkaline soil areas. In addition to harming cherry blossoms, the disease can also endanger rosa and rose plants as well as indoor and outdoor flowers such as ginkgo and carnation. The host covers more than 300 species of plants in 60 families.
symptom
The disease often occurs in the root and neck, especially in the grafting of seedlings, and sometimes occurs in lateral roots, branching roots, or branches (vines).
Carcinoma is spherical at the time of birth and can heal with each other. The color is milky or slightly red. As the tumor grows, the internal lignification hardens. The epidermis is cracked rough and gradually turns brown to dark brown. The cancer can be as small as beans or As big as a boxing. The seedlings have less fibrous roots, slow growth, or early fall of yellow leaves, increased dead branches, shorter flowering duration, and even death. The disease is very stubborn, and even if you remove the cancer, it is often born again.
Pathogen and Infection Cycle
The disease is caused by gram-negative A. tumefaciens, which causes wintering in the cortex or in the soil of cancerous tissues and causes wound propagation through rainwater, irrigation water, long-distance seedlings, and human factors, insects, or root-knot nematodes. In the range of 10 °C to 34 °C survival, the optimal humidity of 22 °C, less than 18 °C or higher than 30 °C is not easy to tumor; acid and alkali pH range of 5.7 to 9.2, can be pathogenic in pH 6.2 to 8 In places where there is heavy alkali and heavy alkali, the higher the humidity is, the heavier the disease is; and the incidence of loose land in sandy loam is less.
Prevention
1. Quarantine the nursery or exotic seedlings, discard diseased plants, find suspicious seedlings, dip in roots for 5 minutes with 1% copper sulfate solution, and soak in 1% lime water for 1 minute, or soak in streptomycin solution for 30 minutes. Observed. 2. 30 g to 50 g per square meter of furazolid 3% granules, 15 cm to 20 cm in the ground, and irrigated with water to kill root-knot nematodes and earthworms and other pests; grafts should be protected from soil contact with the wound, 75% of grafting tools are available Disinfect with alcohol or 1% formaldehyde. 3. If a diseased plant is found, the back tumor should be removed together with its surroundings. The wound can be closed with medical grade iodine or Sterling 400 international unit and then coated with Vaseline; the diseased plant can be applied with sulfur from 50 to 100 grams per square meter at one time. Infuse 20% of soil tyrants WP 500 times or 14% of multi-effect Lingshui agent 150 times of disinfection, and then disinfectant once every half months, a total of three or four times, after 20 days of cancer removal irrigation 50% å²Loquat powder 100 to 150ppm solution to promote plant root growth, rejuvenate diseased plants. Other treatments were the same as before, and treatments performed better before the roots entered vigorous growth in early spring or summer.
Shilu Huanglian is mainly produced in the primeval forest area of Dafengpu, Huangshui National Forest Park, Huangshui Town, Shizhu County. The unique climate, water quality and soil conditions in this area are the best growth areas for Shiluo Huanglian. In 1991, the Ministry of Agriculture Investment in the establishment of the National Yellow River Huangpi GAP demonstration base, the town has also established China's largest Coptis market. Natural plant Raw materials Agricultural products are not any additives. Traditional Huanglian kang, baking with firewood, drying, hair removal with bamboo cage trough, the species are hand-selected, remove the impurities and minced, relatively clean.
Natural Coptis,Wild Ya Lian,Natural Coptis Powder,Natural Coptis Chinensis Extract
Chongqing Taisun Pharmaceutical Co., Ltd. , https://www.taisuncoptis.com