Pathogen: Pathogen of Phyllostachys pubescens is Phoma sp. The conidia are born under the epidermis, and the oblate spheroids form a spherical, dark brown, size 170-233 microns. Conidia are colorless, single-celled, nearly elliptical or oblong, and are 4.0-7.6*1.8-2.5 microns in size.
Infection route: When conidiospores are used for wintering in the damaged parts, the environment is suitable for the next year, and conidia spew out of the transmission. In July-November, a great deal occurred. Strong sun exposure, or excessive shading, serious illness when the plant growth is weak.
Control methods:
1. Gardening Control Cut off the dead litter and burn the wound. Disinfect the wound and apply Vaseline after disinfection. Bamboo should be placed in a ventilated, sunny place but not in direct sunlight.
2. Chemical control spray 1:1: 100 Bordeaux or 75% chlorothalonil 800 wettable powder, or potassium permanganate 1500 times.
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