Pest Control for Hairy Cherry
Hairy cherry, as a high-quality economic tree species for spring flowering and summer fruit picking, has pest issues that have always plagued growers. According to statistics from the agricultural department, pest damage can lead to a yield reduction of 30%-50%. This article will provide a systematic control plan for two major pests - gall aphids and red spiders.
Gall Aphid Control Plan for Hairy Cherry
Identification of Gall Aphid Damage Characteristics
Gall aphids often parasitize on the back of leaves in clusters. In the early stage, transparent sticky secretions can be seen on tender leaves, and in the later stage, leaves become curled and deformed. When the density of insects per plant exceeds 200, it will lead to photosynthesis obstruction of the entire plant.
Three-Level Control System
1. Soil Pretreatment: Use 3% phoxim granules for soil fumigation before planting to kill overwintering eggs. 2. Physical Barriers: Hang silver-gray reflective films to repel adult insects. 3. Chemical Control: Alternate the use of 10% imidacloprid 2000 times liquid and 25% thiamethoxam 3000 times liquid during the outbreak period of aphids.
Red Spider Control Strategy for Hairy Cherry
Pest Development Law
Red spiders are prone to outbreaks in dry seasons (relative humidity < 60%). Their mouthparts刺吸 leaf flesh cells, causing leaves to lose green and show yellowish-white spots. A single adult can transfer to 6-8 leaves.
Ecological Control Combination
• Biological Control: Release California new mite (1:50 ratio of beneficial to harmful). • Plant-based Pesticides: Capsaicin + matrine mixed liquid (0.3% concentration) sprayed weekly. • Environmental Regulation: Regularly spray the leaves with water to maintain humidity > 75%.
By establishing a pest monitoring and early warning system, combined with an integrated control system of agricultural, biological, and chemical control, the incidence of pests can be reduced by over 85%. It is recommended that growers conduct leaf sampling tests monthly, especially paying attention to the pest dynamics during the new shoot growth period (April-May) and fruit expansion period (June-July) to ensure high-quality and abundant yields of hairy cherry.