Experiment of 3 Kinds of Pesticides for Control of Pine Needle Shield Scale
SUN Yanli
Abstract：Different concentrations of 25％thiazinone wettable powder,33％ethyl spiroethyl thiazinone,and 48％chlorpyrifos EC were selected to carry out the control test of pine needle shield scale at the peak stage of nymph hatching.The results showed that after 14 days of spraying,the control effect of 48％chlorpyrifos EC dilution 500 times,48％chlorpyrifos EC dilution 1000 times,33％spirole ethyl ester thiazinone 1500 times,33％spiroethyl ester thiazinone 3000 times solution reached 91％-92％,in line with the principle of environmental protection and drug saving,it is recommended to dilute 1000 times of 48％chlorpyrifos EC and 3000 times of 33％spiroethyl ethyl thiazinone to control pine needle shield scale nymphs.
Keywords：3 kinds of agentsprevention and curepine needle shield scale
Publication Date：2024-12-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 63-66 )