MySheen

Fungal Leaf spot of cut Carnation

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, Symptoms: a purple round spot between the diameter of 0.5~1.5cm, surrounded by a yellowish-green edge; then the middle of the spot becomes brownish gray and dry, and finally the spot expands, black spores appear, and the leaves begin to turn yellow and fall off. Reasons: watering from the upper part of the plant, poor ventilation, high humidity at night, excessive watering and fertilization after planting is also one of the causes of the disease. Control methods: keep the plant dry as far as possible, it is best to use drip irrigation, keep good ventilation. Use 1% Bordeaux solution or 75% chlorothalonil wettable powder 500 times

Symptoms: a purple round spot between the diameter of 0.5~1.5cm, surrounded by a yellowish-green edge; then the middle of the spot becomes brownish gray and dry, and finally the spot expands, black spores appear, and the leaves begin to turn yellow and fall off. Reasons: watering from the upper part of the plant, poor ventilation, high humidity at night, excessive watering and fertilization after planting is also one of the causes of the disease.

Control methods: keep the plant dry as far as possible, it is best to use drip irrigation, keep good ventilation. Use 1% Bordeaux solution or 75% chlorothalonil wettable powder 500 times solution, or 75% mancozeb 500 times solution, carbendazim 500 times solution, etc. According to the severity of the disease, it was sprayed once every two weeks. In a continuous rainy and humid environment, spray medicine twice a week.

 
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