Prevention and Treatment Methods for Siebold's cyclamen basal rot disease
This article provides an overview of the experience of the Flower Clinic with Siebold's cyclamen, specifically discussing the prevention and treatment methods for Siebold's cyclamen basal rot disease, as follows:
Siebold's cyclamen basal rot disease is one of the common diseases of Siebold's cyclamen, occurring both in flower fields and in potted plants in homes. It primarily affects the stem base and leaves near the soil surface. Initially, the disease causes dark spots near the soil surface on the stem base, which then expand and become brownish and rot. The leaves develop dark green, water-soaked circular spots, and when the infection spreads to the petiole, it causes brown rot. In the morning, with high humidity, white to light brown mycelial growth can be seen on the affected areas. Seriously affected plants may fall over or rot and die.
The pathogen overwinters in the form of mycelium or sclerotia in diseased tissues or in the soil. When Siebold's cyclamen is divided or propagated by cuttings, wounds are created, and when temperatures are between 20-24°C, humidity is high, or during rainy weather and excessive watering, the pathogen can infect, often leading to severe outbreaks of the disease.
Prevention methods
(1) Use soilless cultivation methods. For those using soil cultivation, it is recommended to apply compost prepared with enzyme bacteria. Use organic-rich new soil or pond mud, river mud, etc., to prepare potting soil.
(2) Remove affected leaves promptly and improve ventilation.
(3) If conditions allow, disinfect the soil using 40% pentachlorophenol-fungicide mixture or拌种双 powder, applying 8g per square meter, mixed with soil and then used for potting.
(4) In the early stages of the disease, spray with 95% Green Harvest No. 1精品 3000 times dilution or 20% methyl basiliconazole emulsion 1200 times dilution, 50% basiliconazole wettable powder 1000 times dilution, or potassium permanganate 1200-1300 times dilution.
(5) After the disease has appeared, a 1:200 ratio of 40% pentachlorophenol-fungicide mixture or拌种双 powder mixed with fine sand can be applied as a soil treatment, with 100-150g per plant or pot, repeated every 10-15 days.
(6) Apply 0.4-0.45kg of well-cultivated Trichoderma harzianum to 50kg of fine soil, mix well, and sprinkle it around the base of the affected plants to effectively control the spread of the disease. Siebold's cyclamen is sensitive to fungicides, and some new varieties should be tested before large-scale application.
The above information in parentheses provides a detailed explanation of the prevention and treatment methods for Siebold's cyclamen basal rot disease. We hope this article can assist you in managing your green plants!