Toona sinensis contains vitamin E and sex hormone substances, which have anti-aging and nourishing yang effects. Therefore, it is welcomed by people. However, pests and diseases have seriously affected the quality and yield of the toon, so it is essential to timely control the disease. China Pesticide Network Xiaobian for you to analyze how to prevent the root rot of Toona: Ultra-Thin Ball Valve,Industrial Ultra-Thin Ball Valve,Thread Globe Valves,Threaded Swing Check Valve ZHITONG PIPE VALVE TECHNOLOGY CO.,LTD , https://www.ztongvalve.com
Toona sinensis root rot is mainly harmful to seedlings and semi-advanced plants. Seedlings are often ill or stumbled. In the case of large seedlings and semi-integrated plants, the stems and leaves are rotted. When wet, the surface of the diseased leaves produces sparse white mildew, and the cortex of the stem-based disease is initially reddish brown, followed by dark brown water stains and irregular large spots, and finally decays. . The disease continues to develop, and the internal tissues of the stem and roots are discolored and necrotic, and the epidermis of the diseased part is easily separated from the xylem. The diseased plants grow more slowly, wilting the leaves, and the whole plant is dead.
Control measures: prevent water accumulation in the field during growth, avoid fertilization and root burning, and avoid flooding. The diseased plant was removed in time and burned. At the same time, it is possible to use roots and tree guards to cooperate with pesticide roots to induce virus accumulation, to target the generals of tree protection, to inhibit virus-transitive infections of leaves and roots, and to maintain the health of plant transmission systems.
Pesticide manufacturers remind everyone that when using pesticides for prevention and treatment, it is necessary to pay attention to the dosage, and strictly follow the requirements in the instructions to avoid phytotoxicity.