Pepper grey mould of the onset of symptoms
Main harm seedlings pepper grey mould was grasped.After disease early leaf apex yellowing, extended to the young stem of cotyledon.Stem brown or dark brown irregular disease spot.Young plants are often department break from his illness and death.In damp environment, disease developed gray mold, the pathogen of conidium terrier and conidium.
Law of pepper grey mould was grasped
Germs on sclerotium overwintering in the soil, can also be conidium wintering in the sick body.Low temperature, high humidity environment susceptible;Pathogen spores in 15 ℃ ~ 20 ℃ low temperature easy formation;Plastic greenhouse in early spring, low temperature, high humidity susceptible.Growing too close, poor ventilation, insufficient light weight.
Pepper grey mould of comprehensive prevention and control measures
1. To establish a disease-free seedling bed
Choose the terrain, dry lee xiangyang, convenient drainage, soil fertile, born not planted peppers crop seedling raising, seedbed soil with 50% carbendazim wettable powder and 50% thiram wettable powder 1:1 mix, per ㎡ medication 8-10 g mixed with fine soil 15-3 o kg, when planting a third lay on the bed surface, the remaining two-thirds on seed or covered by green heng 1 per ㎡ 1 g of 3 000 times liquid spraying water bed.
2. PengShi disinfection
Years of greenhouse greenhouse planting, because the bacteria source quantity accumulated more, 7 - in August in the summer, the commune reservoir, the ground effect of 7 d, use high temperature sterilization, or with 50% carbendazim each tent 1-1.5 kg, broadcasting with fine soil ground, and then the commune of sterilization.Every space with sulfur before engraftment 7-8 g, plus 15 kg sawdust blending, in the evening light, airtight fumigation 24 h, the effect is better.
