Symptoms The disease mainly damages the aerial parts of Panax notoginseng. The lesions on the leaves are yellowish-brown with obvious brown edges. Black spots on the late lesions are easily perforated. The petiole and stem are mostly yellow-brown prisms with a central depression. Spots; brown spots with round dimples on the fruit, and severe onset of humidity.
The prevention and treatment methods used disease-free Panax pseudoginseng as a seed. Before transplanting, they were immersed in 1:1:200 Bordeaux mixture, dried and transplanted. Seeds can be soaked in formalin 100 to 150 times for 10 minutes, then washed with water, dried and sown. At the onset of the disease, 65% onsenzezin 500 times or 50% on the eumycete 1000 times was sprayed for prevention and control. Sprayed once every 7 days and sprayed 2 or 3 times.
The prevention and treatment methods used disease-free Panax pseudoginseng as a seed. Before transplanting, they were immersed in 1:1:200 Bordeaux mixture, dried and transplanted. Seeds can be soaked in formalin 100 to 150 times for 10 minutes, then washed with water, dried and sown. At the onset of the disease, 65% onsenzezin 500 times or 50% on the eumycete 1000 times was sprayed for prevention and control. Sprayed once every 7 days and sprayed 2 or 3 times.
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