Treatment of grape canker

Grape canker can use methyl carbendazim. Grape canker is a common disease of grape, which causes fruit rot, branch ulcer, and serious fruit cracking and branch death. The pathogen is mainly transmitted by Rain Water. Prevention and control needs to be timely and comprehensive. So, what is the treatment of grape canker?

What is the treatment of grape canker?

Grape canker can be controlled by thiophanate methyl, fluorosilazole, thiazolyl zinc, thiabendazole copper and other agents. In addition, it is necessary to remove the diseased tissue in the field in time and cut off the diseased branches. after cutting off the diseased plants, it is necessary to use fungicides and adhesives to apply to the wound to prevent the bacteria from invading again.

Second, how to improve the fruit setting rate of grapes?

1. Prevent overgrowth

Many friends do not pay attention to the growing branches in the process of planting and allow them to continue to grow. As everyone knows, if a branch of the vine grows too strong, it will affect the flowering and fruiting rate of the grape. The growth of the vine should not be too strong, because if it is too strong, it will require a lot of nutrients and will compete for the nutrients of the lower branches of the grapes, making the grapes underdeveloped. In the second year, the ability of the new long branches to blossom and bear fruit will also be reduced, so the strong branches should be properly cut off, leaving a small number of secondary shoots to increase the leaf area. However, we also need to pay attention to the branches that are too weak, leaving more sub-shoots to sprout to strengthen the growth.

2. Keep the fruit reasonably

When planting, most people think that the more fruit, the better, so there is no reasonable thinning of flowers and fruit for fruit trees. This not only can not increase the yield of fruit, but also lead to the deterioration of the quality of grapes and reduce the tree potential of fruit trees. As a result, the maldevelopment of fruit trees decreased the pollination rate of flower buds in the second year, reduced the nutrient accumulation of branches in the plant, and affected the rate of flowering and fruiting, resulting in falling flowers and fruits. So we should keep the fruit reasonably, control the quantity, ensure the quality and reduce the phenomenon of falling flowers and fruits.

3. Ensure nutrition

Ensuring adequate nutrition for the growth of grapevines is the key factor to enhance the growth of grapevines and improve the rate of fruit setting. After harvest, the orchard should be fully fertilized, and the amount of fertilizer should reach at least half of the amount of fertilizer needed for one year. Topdressing at least three times a year, and applying appropriate nitrogen fertilizer before germination is the first time. The second topdressing is carried out during the fruit expansion period, the fertilizer can be used with rotten farm manure, the last time in the fruit coloring, mainly some trace elements, pay attention to the application of nitrogen fertilizer.

4. Prevention and control of diseases

Diseases and insect pests are also one of the main reasons for grape falling flowers and fruits, so if you want to improve the fruit setting rate of grapes, you should also prevent the occurrence of diseases and insect pests. The main diseases and insect pests of grapes are downy mildew, leafhopper and so on. The orchards should be disinfected in time after harvest every year, and the residual branches and damaged fruits should be cleaned up. Pay attention to stay away from the orchard, and then the low orchard should also carry out regular ploughing, disinfection, removal of bacteria and insect eggs in the orchard, reduce pathogens and reduce the incidence of disease.

For grape diseases and insect pests, mainly to control, once found infected, need to be treated in time. Fluorosilazole, thiazolyl zinc, thiazol copper and other agents for prevention and treatment. In addition, it is necessary to remove the diseased tissue in the field in time and cut off the diseased branches. after cutting off the diseased plants, it is necessary to use fungicides and adhesives to apply to the wound to prevent the bacteria from invading again.