Characterization of lecithin tank mixing adjuvant and synergistic effect with sulfoxaflor on the control of rice planthopper
Received:November 04, 2018    Download the full
DOI：10.16801/j.issn.1008-7303.2019.0025
Key Words:lecithin  liposome  tank mixing adjuvant  Transmicelle  sulfoxaflor  planthopper  synergism
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Author NameAffiliationE-mail
XU Pengfei Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China  
KANG Tinghao Wuhan KPC Co. Ltd., Wuhan 430070, China  
ZHANG Yuan Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China  
QIN Xueying Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China  
HE Shun Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China  
LI Jianhong Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China  
WAN Hu Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China huwan@mail.hzau.edu.cn 
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Abstract:
      In order to investigate the property of "Transmicelle" a new lecithin tank mixing adjuvant, its physical characteristics were investigated by transmission electron microscopy (TEM) and laser particle size analyzer, and its synergistic effect in controlling rice planthopper was determined by bioassay and field trials. The results showed that "Transmicelle" contained round liposomes with a Z-average size of 129.5 nm. The bioassay exhibited that "Transmicelle" can increase the toxicity of sulfoxaflor by 1.67 times. Furthermore, the field trial results indicated that the control effect of sulfoxaflor was increased by 9.04%-41.77% with the "Transmicelle". Compared to the normal dosage treatment without "Transmicelle", no significant difference in the control effect was detected by adding "Transmicelle" if the amont sulfoxaflor was reduced by 40%. The above results illustrate that the "Transmicelle" of the lecithin tank mixing adjuvant can enhance the utilization rate of the pesticide by forming liposomes, which results in a synergistic effect.
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