What is the best control method for flower scale insects?

Shell insects often gather on branches, leaves, flowers and fruits. Adults and nymphs use their special mouthparts to pierce the flower tissue to absorb juice, leaving irregular yellow spots on the leaves, which will dry up the leaves, shrivel the fruits and induce coal fouling.

Control measures: in the incubation period, when the nymph is not fixed, spray omethoate or dichlorvos once a week, 3-4 times in a row, it will be effective. Spraying engine oil emulsion in spring has a certain control effect. In addition, it is also effective to irrigate the root with 500 times dichlorvos, or to apply 3-10 g 10% carbofuran in pot.

A small number of shell insects can be scraped off manually with bamboo slices, and the branches with high population density should be removed, and dense branches should be removed to enhance ventilation and light transmission.