Control of anthracnose of figs

This disease is an important disease on fig fruit, and a large number of fruits often rot because of the disease.

[harmful symptoms] it mainly harms fruits and can also infect branches. After the fruit was damaged, there were round, slightly sunken and brown patches on the fruit surface, followed by concentric round black spots on the disease spot, and pink sticky matter grew in the wet weather, that is, the conidia of the pathogen. Finally, the disease spot continues to expand, the fruit softens and decays, and sometimes shrinks to a stiff fruit hanging on the tree. The branches showed light brown patches after getting sick, and then gradually withered and died.

[incidence regularity] the pathogen overwintered on the stiff fruit and produced conidia in the following spring, which were transmitted by wind and rain and invaded the shoots and fruits. In the future, spores will be produced on the new lesion and repeated infection will be carried out. The wet weather and continuous rain can promote the occurrence of diseases. The fruit was initially susceptible to the disease, but it was difficult to detect because the symptoms were not obvious. Until September, the fruit was nearly ripe, the disease spot expanded rapidly, and the disease in the field was obviously aggravated.

[prevention and control methods]

(1) clear the garden carefully in winter to reduce the source of infection in the field.

(2) the fruits should be carefully sprayed during the Meiyu period from June to July and early autumn. The medicine can be treated with 1000 times of carbendazim wettable powder, 70% chlorothalonil wettable powder or 80% anthrax Fumei wettable powder.