Mango bacterial black spot disease often occurs during rainy times. How to scientifically and effectively prevent and reduce losses?

(1) Agricultural prevention and control:

1. Variety selection: If you want fruit trees to be disease-resistant, seed selection is a critical step during planting. The selection of varieties should be based on local planting conditions. Especially in coastal areas, typhoons visit every year and cause great losses to many fruit trees. Therefore, be sure to choose mangoes with strong wind and rain resistance and strong disease resistance. varieties for planting.

2. Take measures to prevent wind and rain:

When planting mango trees in coastal areas and relatively flat places, protective measures must be taken. For example, tree species taller than mango trees can be planted on the periphery of mango orchards to serve as natural barriers. Mango trees can also be planted in forests where there are already large trees to create a natural protective belt. After rain, the drainage of ridges and furrows should be strengthened to prevent rainwater from accumulating at the roots of fruit trees to avoid damaging the trees.

3. Do a good job in quarantine:

Before raising seedlings, you can quarantine the seeds to confirm that the seeds are disease-free before raising seedlings. When raising seedlings, do not place the seeds directly in the orchard for seedling raising. You can isolate the seedlings from the orchard where they are planted. Make sure there are no problems before taking the seedlings to the orchard for planting.

4. Do a good job in cleaning up the orchard:

In order to prevent germs from hiding in diseased branches, dead branches, dead branches, rotten leaves, rotten flowers, and rotten fruits, clean the orchard regularly. Conduct inspections and cleaning of orchards. Branches that grow too densely need to be pruned to maintain the permeability of fruit trees and enhance photosynthesis. For overly dense inflorescences and fruits, thinning of flowers and fruits is required. When pruning and thinning flowers and fruits, choose to do it in sunny weather, which can speed up the healing of wounds and reduce the invasion of pests and diseases.

(2) Chemical control:

Chemical control means spraying pesticides on fruit trees during a specific period of time, especially after pruning and thinning flowers and fruits, which are prone to bacterial infection. . It is also necessary to check the weather forecast and take precautions in advance, and spray pesticides before and after typhoons, heavy rains, etc. The reference drugs for spraying are as follows:

2% Kasugamycin 500 times liquid, 77% Cyclosporine wettable powder 600 times liquid, 40% copper hydroxide suspension 500 times liquid, 20% Thiaxanthin There are many chemical drugs that can be used, such as 700 times copper solution, quinoline copper, mesobiotics, etc. The specific prevention and control can be carried out according to the local conditions.

In the prevention and control of mango bacterial black spot, agricultural control is the main method, and chemical control is supplemented. In normal times, it is necessary to do a good job in the management of fruit trees and not provide suitable opportunities for diseases to avoid the outbreak of diseases and economic losses.

The scope of damage caused by mango bacterial black spot is relatively wide, including mango leaves, fruits, tender tips, branches, petioles, fruit stalks, flower buds, etc., so it is best to carry out treatment before the disease occurs. Prevention, prevention and treatment after the onset will be more troublesome, and the effect will be greatly reduced. Therefore, using scientific preventive methods and control measures can avoid unnecessary losses, increase mango yield and improve mango quality.