How to prevent and cure anthracnose of mango?

What harm does mango anthracnose have? How to prevent and cure anthracnose of mango? Also ask experienced netizens to help introduce the harm and control methods of mango anthracnose in the farming network, which are listed in detail below for netizens' reference. The harm of mango anthracnose: mango anthracnose mainly harms mango flowers, fruits and tender shoots. After the young mango leaves were infected, there were many round brown spots with yellow halo around them, and gradually expanded into round, polygonal or irregular brown spots, then ruptured and perforated. The leaves and young fruits were easily infected by wounds caused by gall midges, leafhoppers and so on. When mango anthracnose is seriously infected, the young leaves are easy to bend, the leaf tips and edges are often scorched, and the diseased leaves are easy to fall off. The branches form black spots after they are infected, and then gradually dry up. After infecting the flower ear, there are some small spots, and finally turn black and rot, causing rotten flowers and falling fruit. The fruit is susceptible to disease during the whole growth period, and the young fruit becomes deformed and blackened and falls off after the disease is diseased. After the larger fruit is damaged, black-brown round spots are formed on the pericarp, the center is sunken, the disease part is stiff and deteriorated, and the disease grows pink sticky when the weather is wet. The disease not only does harm in the mango growth period, but also continues to do harm in the fruit storage and transportation period, resulting in a large number of rotten fruits. The cause of mango anthracnose: high humidity is the main cause of anthracnose, the relative humidity is more than 95%, and the bacteria invade after 12 hours, and the incubation period is 2-4 days; it can occur all year round. In all parts of Hainan Province, especially in the northeast of Qiongyang, the disease can occur every year from November to April, when the relative humidity is more than 95% and the temperature is 12-30 ℃. Especially when the temperature is 16-25 ℃ and the relative humidity is 95% Mel 100%, anthracnose is the most prone to outbreak, resulting in poor harvest and loss of harvest. Anthracnose pathogen has the characteristics of latent infection, mostly latent in the pericarp and pulp near the petiole, or in the mesophyll near the petiole, about 1mm. Control methods of mango anthracnose: methods 1. The diseased branches and leaves were cut off in late autumn and early winter in Qingyuan, and then burned centrally, and the whole garden was sprayed with 1 ∶ 2 ∶ 100 or 1 ∶ 1 ∶ Bordeaux solution. Method 2. Pruning and pruning the fruit in summer should be pruned and reshaped in time to improve the light transmission and ventilation of the plant. Method 3. The pesticide was sprayed once a week during the flowering period, with chlorothalonil 600x, carbendazim 500x, methyl topiramate 800x, methomyl 400x, Spock EC 1000 times (bud stage) and 20% chlorine EC 600x (rainy days). Method 4. Foliar spraying of 0.2% murine 0.3% potassium dihydrogen phosphate, urea and borax every 7-10 days; spraying flower and fruit protectant for 2-3 times can effectively enhance the disease resistance of the plant. During the fruit period, the following pesticides can be used in rotation, 70% methyl topiramate 700x solution, 1 ∶ 1 ∶ 100Bordeaux solution, 75% chlorothalonil 600x solution, 25% Spoke EC 800x solution, 20% chlorine EC 500x solution. Method 5. After harvest, soak the fruit in 1000-fold solution of 70% methyl topiramate (water temperature 52-54 ℃) for 15 minutes, pick it up and dry it in a ventilated place, pack it in cartons or bamboo baskets, or move it to a low-temperature CA storage. it can also be sprayed 15 days before fruit harvest and soaked in 25% Shibao solution for 15 minutes, and then packed. The autumn shoot growth period is sprayed every half a month, and the medication is basically the same as the flowering and fruiting period. Click to get more mango planting techniques click to get more fruit planting techniques