Banyan Bonsai Disease and Pest Control Methods
Banyan bonsai, with its sturdy and ancient appearance, is deeply favored by horticulture enthusiasts. However, it is often plagued by diseases and pests during maintenance. This article provides a systematic control plan for typical diseases and pests such as sooty mold, aphids, and red spiders to help you create a healthy banyan scene.
Common Disease Control for Banyan Bonsai
Comprehensive Control of Sooty Mold
This disease often occurs during the plum rain season, with an incidence rate increasing by 80% when humidity is greater than 75%. In addition to black spots on the leaves, it is often accompanied by sticky secretions. Suggestions: ① Use potassium dihydrogen phosphate solution (1:1000) to enhance resistance ② Clean the aerial roots and the back of leaves with a soft bristle brush weekly ③ Combine with spraying 25% carbendazim wettable powder.
Three-Step Pest Control Strategy
Aphid Elimination Campaign
Focus on preventing and controlling the breeding season from March to May. Emergency treatment is needed when the pest density is greater than 50 individuals per leaf. Recommendations: ① Spray the leaf axils with homemade chili water (50g dried chili + 1L water boiled) ② Alternate the use of imidacloprid and matrine ③ Introduce lady beetles for biological control.
Red Spider Eradication Plan
High temperature and dry environment can easily trigger outbreaks, causing the leaves to lose green up to 60%. Key points for prevention and control: ① Maintain air humidity greater than 40% ② Apply abamectin emulsion monthly ③ Focus on spraying the back of leaves, combined with physical flushing.
Scale Insect Elimination Strategy
Immediate treatment is required when the pest density is greater than 10 individuals per branch. Standard operating procedures: ① Physically remove with 75% alcohol cotton swabs ② Infuse 40% omethoate emulsion into the roots ③ After pruning the affected branches, apply healing ointment.
By establishing a three-level protection system of "prevention-monitoring-control" and using intelligent temperature and humidity monitoring equipment, the incidence of diseases and pests can be reduced by 85%. Regularly rotating the pot orientation to ensure even lighting and changing the humus-rich nutrient soil every spring are key to maintaining the healthy growth of banyan bonsai.