|Table of Contents|

Population Dynamics of Helicoverpa armigera in Honeysuckle Field and Field Application Evaluation of Eight Insecticides for Controlling Larvae

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年20
Page:
27-33
Research Field:
Publishing date:

Info

Title:
Population Dynamics of Helicoverpa armigera in Honeysuckle Field and Field Application Evaluation of Eight Insecticides for Controlling Larvae
Author(s):
ZHU Guodong1; ZHAO Yongfei2; JIN Yan3; LIU Shouzhu1; ZHAO Peibao1
(1.College of Agronomy,Liaocheng University,Liaocheng,Shandong 252000；2.Liaocheng Academy of Agricultural Science,Liaocheng,Shandong 252000；3.Shandong Institute for the Control of Agrochemicals,Jinan,Shandong 250100)
Keywords:
Lonicera japonica; Helicoverpa armigera; population dynamics; field efficacy; safety evaluation
PACS:
-
DOI:
10.11937/bfyy.20194846
Abstract:
Lonicera japonica Thunb.is an important Chinese herbal medicine,which planted widely in China.Helicoverpa armigera,a worldwide pest,is an important pest of Lonicera japonica damageing the Honeysuckle bud,causing severe losses for Honeysuckle industry.To clear the population dynamics of H.armigera in honeysuckle-growing areas in Shandong Province,and screen pesticides both efficient and secure for controlling H.armigera,we investigated the occurrence dynamics of H.armigera,and detected the toxicity of 8 pesticides against H.armigera 3rd instar larvae.Then,the field efficacy and safety of L.japonica plants were detected.The results indicated that H.armigera occurs four generations one year in Honeysuckle field of Shandong Province,and the larval high occurrence period overlapped with Honeysuckle bud harvest time.In the tested pesticides,spinetoram,emamectin benzoate,indoxacarb and chlorantraniliprole possessed higher toxicity against H.armigera 3rd instar larvae,and the values of LC50 were lower than 10 mg?L-1.Field experiment indicated that the above four insecticides were special formulation controlling H.armigera with better fast-acting property and persistence,and the control efficiency were over 85%.Moreover,entomogenous microorganism,Bacillus thuringiensis,also had considerable control effect,while the control effect of botanical insecticide,matrine,was less prominent.Furthermore,spraying the tested 8 insecticides was safe to honeysuckle plants.In conclusion,during early period of H.armigera larval occurrence,spraying spinetoram,emamectin benzoate,indoxacarb and Bacillus thuringiensi cloud play an excellent control effect.

References:

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Last Update: 2021-01-08