This study was made to describe the morphological features of larvae of Pachyligia dolosa Butle r, Cystidia stratonice (Stoll) and Planociampa antipala Prout of Ennomin ae.
[Objective]The paper was to study indoor efficacy of 13 insecticides against tea geometrid（Ectropis Oblique Hypulina Wehrli）.[Method]Thirteen insecticides were sprayed onto indoor hydroponic young tea shoots with in...[Objective]The paper was to study indoor efficacy of 13 insecticides against tea geometrid（Ectropis Oblique Hypulina Wehrli）.[Method]Thirteen insecticides were sprayed onto indoor hydroponic young tea shoots with infesting third instar larvae of tea geometrid reared in the laboratory to simulate the actual condition in the tea garden,and their efficacy was studied.[Result]The control efficacies of 60 g/L spinetoram SC 3 000 times dilution,3% emamectin benzoate ME 15 000 times dilution,240 g/L methoxyfenozide SC 5 000 times dilution and 240 g/L metaflumizone SC 1 500 times dilution were all greater than 91% after spraying for 7d.The control efficacy of 20%tebufenozide SC 1 000 times dilution remained 86.48%.Although the control efficacy of 20%flubendiamide WDG 6 000 times dilution was slightly lower than the above five treatments,the dry weight of faeces was the second least,and its protection effect on leaves was only second to spinetoram.Therefore,60g/L spinetoram SC,3% emamectin benzoate ME,240 g/L methoxyfenozide SC,240 g/L metaflumizone SC,20% tebufenozide SC and 20% flubendiamide WDG were ideal insecticides that could be used rotationally to control tea geometrid in tea garden.The control efficacy of 10% bifenthrin EC 3 000 times dilution was only 23%,so the insecticide was not suitable for control against the pest.[Conclusion]The paper proposed an alternate insecticide for field control against tea geometrid.展开更多
Female tea geometrid moths release sex pheromones to attract male moths to mate,and then lay eggs on tea plants,which determines where the larvae hatch.The larvae preferred to devour the fresh leaves and buds of tea p...Female tea geometrid moths release sex pheromones to attract male moths to mate,and then lay eggs on tea plants,which determines where the larvae hatch.The larvae preferred to devour the fresh leaves and buds of tea plants.Therefore,it is of great significance to dynamically monitor and detect the population of the female tea geometrid moths in tea plantations.Here,different from the common strategy of detecting male moths by sex pheromone lures,we developed an electrochemical impedance biosensor system based on the pheromone-binding protein 2(PBP2)from male tea geometrid moths.It showed that this PBP2-biosensor could specifically bind two sex pheromone components at concentrations ranging from 10^(−7) to 10^(−4) M and successfully detect live female tea geometrid moths.Molecular docking prediction pinpointed key amino acids involved in the binding between PBP2 and sex pheromone components.Moreover,a mathematical model of the biosensor detection signal was developed based on the number of live moths and the dynamic detection data.The specific PBP2-based biosensor developed in this study not only offers a novel approach for detecting live female tea geometrid moths in the field,but also contributes to the advancement of insect olfactory biosensors for monitoring live pests and further expands the applications of biosystem engineering in the fields of plant protection and agricultural environment.展开更多
[目的]探讨0.4%蛇床子素乳油对茶尺蠖和假眼小绿叶蝉的控制效果。[方法]采用0.4%蛇床子素乳油、0.3%印楝素乳油、2.5%鱼藤酮乳油等3种植物源农药与2%甲维盐乳油、20%啶虫脒可溶性液剂等2种化学农药进行田间药效对比试验。[结果]0.4%蛇...[目的]探讨0.4%蛇床子素乳油对茶尺蠖和假眼小绿叶蝉的控制效果。[方法]采用0.4%蛇床子素乳油、0.3%印楝素乳油、2.5%鱼藤酮乳油等3种植物源农药与2%甲维盐乳油、20%啶虫脒可溶性液剂等2种化学农药进行田间药效对比试验。[结果]0.4%蛇床子素乳油6 g a.i./hm2药后7、10 d,对茶尺蠖的防效均在95%以上,对假眼小绿叶蝉的防效均在80%以上。[结论]0.4%蛇床子素乳油适用于防治茶尺蠖和假眼小绿叶蝉,可在无公害茶叶生产特别是有机茶生产中大力推广应用。展开更多
文摘This study was made to describe the morphological features of larvae of Pachyligia dolosa Butle r, Cystidia stratonice (Stoll) and Planociampa antipala Prout of Ennomin ae.
文摘[Objective]The paper was to study indoor efficacy of 13 insecticides against tea geometrid（Ectropis Oblique Hypulina Wehrli）.[Method]Thirteen insecticides were sprayed onto indoor hydroponic young tea shoots with infesting third instar larvae of tea geometrid reared in the laboratory to simulate the actual condition in the tea garden,and their efficacy was studied.[Result]The control efficacies of 60 g/L spinetoram SC 3 000 times dilution,3% emamectin benzoate ME 15 000 times dilution,240 g/L methoxyfenozide SC 5 000 times dilution and 240 g/L metaflumizone SC 1 500 times dilution were all greater than 91% after spraying for 7d.The control efficacy of 20%tebufenozide SC 1 000 times dilution remained 86.48%.Although the control efficacy of 20%flubendiamide WDG 6 000 times dilution was slightly lower than the above five treatments,the dry weight of faeces was the second least,and its protection effect on leaves was only second to spinetoram.Therefore,60g/L spinetoram SC,3% emamectin benzoate ME,240 g/L methoxyfenozide SC,240 g/L metaflumizone SC,20% tebufenozide SC and 20% flubendiamide WDG were ideal insecticides that could be used rotationally to control tea geometrid in tea garden.The control efficacy of 10% bifenthrin EC 3 000 times dilution was only 23%,so the insecticide was not suitable for control against the pest.[Conclusion]The paper proposed an alternate insecticide for field control against tea geometrid.
基金supported by the National Key R&D Program of China(2023YFE0104800)EU-China Joint action to increase the development and adoption of IPM tools ADOPT-IPM(European Union's Horizon Europe Research and Innovation program Grant Agreement(No.101060430))National Natural Science Foundation of China(No.32170531)。
文摘Female tea geometrid moths release sex pheromones to attract male moths to mate,and then lay eggs on tea plants,which determines where the larvae hatch.The larvae preferred to devour the fresh leaves and buds of tea plants.Therefore,it is of great significance to dynamically monitor and detect the population of the female tea geometrid moths in tea plantations.Here,different from the common strategy of detecting male moths by sex pheromone lures,we developed an electrochemical impedance biosensor system based on the pheromone-binding protein 2(PBP2)from male tea geometrid moths.It showed that this PBP2-biosensor could specifically bind two sex pheromone components at concentrations ranging from 10^(−7) to 10^(−4) M and successfully detect live female tea geometrid moths.Molecular docking prediction pinpointed key amino acids involved in the binding between PBP2 and sex pheromone components.Moreover,a mathematical model of the biosensor detection signal was developed based on the number of live moths and the dynamic detection data.The specific PBP2-based biosensor developed in this study not only offers a novel approach for detecting live female tea geometrid moths in the field,but also contributes to the advancement of insect olfactory biosensors for monitoring live pests and further expands the applications of biosystem engineering in the fields of plant protection and agricultural environment.
文摘[目的]探讨0.4%蛇床子素乳油对茶尺蠖和假眼小绿叶蝉的控制效果。[方法]采用0.4%蛇床子素乳油、0.3%印楝素乳油、2.5%鱼藤酮乳油等3种植物源农药与2%甲维盐乳油、20%啶虫脒可溶性液剂等2种化学农药进行田间药效对比试验。[结果]0.4%蛇床子素乳油6 g a.i./hm2药后7、10 d,对茶尺蠖的防效均在95%以上,对假眼小绿叶蝉的防效均在80%以上。[结论]0.4%蛇床子素乳油适用于防治茶尺蠖和假眼小绿叶蝉,可在无公害茶叶生产特别是有机茶生产中大力推广应用。
