Poplar rotten disease, also known as poplar rot disease, mainly damages the branches of trees and distributes in northeast, northwest, and north China regions. The disease is extremely contagious and the disease is endemic, often resulting in the death of a large number of forest trees and a great loss. In recent years, due to the large-scale planting of poplars, the disease has occurred from time to time. The planting of a single poplar species will create conditions for the occurrence of this disease. If strict prevention and control are not imposed, there may be a great chance. Prevention and control methods: 1. Planting multiple trees in the region, if a single development of poplar species, is not conducive to disease prevention and control, and more mixed forests (such as mixed with Yang stab), is not conducive to disease transmission. 2. A large area of ​​poplar forests with hedgerows or eucalyptus forests at regular intervals (eg, 400 meters or so) can hinder the spread of germs. Once diseases occur, they can be controlled regionally so that they will not be infected. If the poplar forest is relatively small, it is also possible to set up isolation forest belts around it. 3. When planting trees, pay attention to appropriate trees, and select disease-resistant varieties, and use excellent seedlings with good experience and sterility. Reduce rooting when raising seedlings, avoid water loss, trauma during transportation, and protect seedlings when planting to reduce damage. Strengthen the management of young forest tending, such as weeding, loosening soil, wiping buds, timely irrigation and drainage, prohibition of grazing, and prevention of pests and diseases. Pruning should be done in the winter to avoid pruning in the rainy season. 4. The tree trunks are painted white in late autumn or early spring to prevent freezing, sunburn, disease prevention, and pest control. 5. The competent forestry authorities in areas where conditionality or disease is likely to occur should organize the removal of diseased shoots and diseased trees in autumn and winter. The diseased trees and diseased branches that have been removed are all burned and the sources of sterilization are eliminated. During the spring and summer season, owners of forest trees should self-check themselves at any time and find diseased plants and diseased branches to eliminate and destroy them in time. In this way, prevention is the main method, and losses can be controlled in a smaller range. 6. The nursery where the old nursery or vegetable is changed after many years is prone to this disease. If it is found that the disease should be replaced, other varieties other than willow will be planted in this plot. If there is no ground to fall, soil disinfection and poplar cuttings disinfection should be conducted before nursery. 7. For the incidence of sapling trunks, no pathogenic bacteria are found in the roots. They can be treated with flat stubbles and disinfected with chemicals (eg 50% carbendazim). For the treatment of infected patients, first use a knife to dig out the lesions, expose the xylem, disinfect with drugs, apply 10% alkaline water or 25 times carbendazim or thiophanate. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Biological Microscope Biological Microscope,Trinocular Thermostat Microscope,Biological Trinocular Microscope,Biological Artificial Microscope NINGBO VANCO INSTRUMENT CO.,LTD , https://www.vancoscope.com
Prevention and control of poplar rotten disease>