Toxicities and synergy effects of sulfoxaflor and other ten insecticides against Aphis gossypii Glover
Received:October 18, 2018    Download the full
DOI：10.16801/j.issn.1008-7303.2019.0024
Key Words:insecticide  Aphis gossypii  synergy effects  flupyradifurone  sulfoxaflor  pymetrozine
Fund Project:
Author NameAffiliationE-mail
WANG Huanhuan College of Plant Protection, Shandong Agricultural University/Key Laboratory of Pesticide Toxicology and Application Technique, Taian 271018, Shandong Province, China  
ZHANG Chunjiao College of Plant Protection, Shandong Agricultural University/Key Laboratory of Pesticide Toxicology and Application Technique, Taian 271018, Shandong Province, China  
LIU Mengming College of Plant Protection, Shandong Agricultural University/Key Laboratory of Pesticide Toxicology and Application Technique, Taian 271018, Shandong Province, China  
ZHU Peng College of Plant Protection, Shandong Agricultural University/Key Laboratory of Pesticide Toxicology and Application Technique, Taian 271018, Shandong Province, China  
XUE Chaobin College of Plant Protection, Shandong Agricultural University/Key Laboratory of Pesticide Toxicology and Application Technique, Taian 271018, Shandong Province, China cbxue@sdau.edu.cn 
Hits: 3397
Download times: 1114
Abstract:
      In order to develop high-efficiency synergistic insecticide combinations against Aphis gossypii Glover, the toxicities of sulfoxaflor and other ten insecticides against A. gossypii were determined by the leaf dipping method. The results showed that among all the eleven insecticides tested, sulfoxaflor showed the highest toxicity against A. gossypii, and pymetrozine exhibited the lowest toxicity 24 h after the treatment, with the LC50 values of 10.15 mg/L and 369.63 mg/L, respectively. When the results obtained after 48 h were considered, sulfoxaflor was still the highest effective insecticide to A. gossypii, and the lowest toxic insecticide became lambda-cyhalothrin, with the LC50 values of 2.35 mg/L and 117.57 mg/L, respectively. Based on these results, the co-toxicities of different insecticides combinations were determined, and the following insecticides combinations showed obvious synergism against the aphid:flunicotamid plus pymetrozine (1:1), flupyradifurone plus pymetrozine (1:5), sulfoxaflor plus pymetrozine (1:3), flupyradifurone plus lambda-cyhalothrin (1:5), and sulfoxaflor plus lambda-cyhalothrin (1:5). And the co-toxicity coefficients (CTC) were 1 271, 820, 561, 1 277 and 478, respectively. These results have provided a scientific basis for the efficient chemical control of A. gossypii.
View Fulltext  View/Add Comment  Download reader