Complete Guide to crabapple花 Pest Control
As the main star of the spring courtyard, crabapple花 often suffers from various pest invasions. This article systematically sorts out the characteristics and control strategies of 7 common pests, through high-definition real-shot identification + scientific medication guidelines, to help you fully protect crabapple's healthy growth.
Key Points of crabapple花 Pest Control
Aphids: Spring bud killer
Key control period from April to June, recommended to alternate between using imidacloprid and dinotefuran. Regular pruning of pest branches can reduce the infection rate by 80%, and yellow board monitoring can provide early warnings of pest conditions.
Thrips: Hidden tender tip destroyer
Need to focus on prevention during the high-temperature season from May to August, check the backs of unexpanded tender leaves weekly. Suggested combination of pyridaben + pymetrozine,喷施 in the early morning for better results.
Net bugs: The cause of leaf rust spots
Rust spots on the back of the leaves are typical characteristics, monthly leaf washing can reduce 50% of the eggs. A combination of abamectin and lambda-cyhalothrin shows significant effects.
Stem sawflies: The cause of withered branches
Complete Guide to crabapple花 Pest Control
Ongoing control period from April to September, immediately cut off drooping branches when found. Recommended to use 3% highly concentrated benoxazinol emulsion for trunk injection to control larvae.
Spiny caterpillars: Dangerous toxic creatures
High incidence period from June to September, wear gloves for operation, and chlorpyrifos emulsion can achieve a mortality rate of 95% for older larvae. Nighttime light trapping can effectively control the number of adults.
Red spiders: Hidden killer in dry seasons
Regularly spray water on the leaves to create a humid environment, the combination of dicofol and lubron can break resistance. Focus on spraying the back of the leaves to ensure the penetration of the medication.
Longicorn beetles: Three-year hidden crisis
The adult emergence period in May is a key control window, green thunder microcapsule formulation has an efficacy period of 60 days. Biological control recommends releasing 200 heads/acre of管氏肿腿蜂.
Through regular inspections, scientific medication, and ecological control combined, establish a full-year pest control calendar. It is recommended to conduct a comprehensive inspection once a month, strengthen disease prevention during the rainy season, focus on controlling red spiders during the dry season, and achieve a healthy growth cycle management for crabapple花.