MySheen

Anthracnose of primrose

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, [Pathogen] Colletotrichum primulae, a genus of fungi, belongs to the subphylum Semi-fungi, and belongs to the genus Sphaerotheca. [Symptoms] Round or nearly round brown spots appear on the leaves, and sparse small black spots are formed in the late stage, which is the conidium disk of the pathogen. [Pathogenesis rule] Disease nuclear radiation overwinters on infected leaves, conidia spread by wind and rain, and invade from wounds. [Epidemic characteristics] Higher humidity is conducive to the occurrence of diseases or to the aggravation of diseases. [Prevention and control measures

[pathogen] Colletotrichumprimulae belongs to the subphylum of fungal semi-knowns and the genus Rhizoctonia.

[symptoms] there are round or nearly round brown spots on the leaves, and sparse small black spots are whorled on the disease spots in the later stage, which is the conidium disk of the pathogen.

[incidence regularity] the diseased nuclear radiation overwintered on the susceptible deciduous leaves, and the conidia spread by wind and rain and invaded from the wound.

[epidemic characteristics] higher humidity is beneficial to the occurrence of diseases or aggravate the disease.

[prevention and control measures] A. Remove diseased or fallen leaves in time to reduce the source of infection. b. At the initial stage of the disease, 65% Dysen zinc wettable powder 600 times or 50% carbendazim 800 times or 80% anthrax Fumei wettable powder 500-800 times for prevention and treatment.

 
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