What pesticides are effective for controlling rose scale insects
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What pesticides are effective for controlling rose scale insects - Treatment measures and prevention methods
Symptoms of rose scale insects
Rose scale insects are mostly affected by white轮蛤, with orange bodies and dark white circular or oval waxen shells tightly attached to branches and trunks. Although there are many species of scale insects, their body shapes vary, but their harm methods are basically the same,聚集刺吸枝干或叶片汁液, causing the plant to stop growing, weaken its growth momentum, and fail to bloom normally.
The harm of rose scale insects
Scale insects harm the leaves, branches, and fruits of roses. Male scale insects have wings and can fly, while female insects and larvae stay on branches, leaves, or fruits after hatching, causing leaves to turn yellow, branches to wither, and the plant to weaken, and are prone to sooty mold disease.
What pesticides are effective for controlling rose scale insects
Rose scale insects can be treated, using the pesticide "Scale Insect Control" 750-1000 times liquid spray, applied in the afternoon when the temperature is higher, with two consecutive sprays, 5-7 days apart.
If the situation is more severe, we can combine fenvalerate, thiamethoxam, and organic silicon high permeability agents to kill the eggs, in a ratio of 1:1500, with 1 gram of each pesticide, totaling 3 grams, then add 1500 grams of water.
Prevention methods for rose scale insects
Methods for dealing with scale insects
Chemical pesticides need to be used for control when there is a large number of scale insects. Pesticides such as "Mu Wangte," 40% omethoate emulsion 1000-1200 times liquid, and 25% phosphamidon 500-800 times liquid can be used for spraying.
Preventive measures for scale insects
1. Spray a 5-degree lime sulfur solution before winter, which is very effective. Spray 40% omethoate emulsion 1000-1200 times liquid or 25% phosphamidon 500-800 times liquid during the nymph hatching period to kill. Bury 10% fosthiazate granules, 10-15 grams per plant, for systemic control, and also control root-knot nematodes, thrips, aphids, and other pests.
2. Pesticide control: You can spray 40% fast-acting emulsifiable oil 1500 times liquid, or choose systemic insecticides such as furadan or fosthiazate and bury them in the potting soil, then water thoroughly. Generally, a flowerpot with a diameter of 24 centimeters is used, with 20 grams of 3% furadan granules or 5 grams of 15% fosthiazate granules.
The above shares a comprehensive introduction of what pesticides are effective for controlling rose scale insects and treatment measures and prevention methods, hoping to bring some knowledge about green plants to green plant enthusiasts.