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Chinese Journal of Biological Control ›› 2021, Vol. 37 ›› Issue (3): 459-463.DOI: 10.16409/j.cnki.2095-039x.2021.01.008

• RESEARCH REPORTS • Previous Articles    

Synergism of Nano Additives to Five Botanical Pesticides against Western Flower Thrips Frankliniella occidentalis

HU Qian, Du Xiangge   

  1. College of Plant Protection, China Agricultural University, Beijing 100193, China
  • Received:2020-06-23 Published:2021-06-16

Abstract: In order to effectively control the occurrence of western flower thrips on celery in the Beijing suburban base, the study adopted five botanical pesticides (5% d-limonene, 0.3% azadirachtin, 1.5% pyrethrin, 0.6% matrine, 2.5% rotenone) and nano additives. A certain proportion of nano additives were added to botanical pesticides for controlling thrips, in order to achieve the purpose of improving the prevention effect of botanical pesticides, prolonging the duration of botanical pesticides and reducing the use of botanical pesticides. The results showed that:among the five botanical pesticides, 0.6% matrine was the ideal pesticide to control western flower thrips. The field control effects were 75.58% and 66.83% respectively after being treated with matrine for 3 d and 7 d; After mixing with nano-additives in an 1:1 ration, the control effect of all the five botanical pesticides had increased by 10% to 20%. 0.6% matrine has a significant synergism which controlling effect on thrips is 85.71% and 78.05%, respectively after being treated for 3 d and 7 d. If we consider the control effect to reach 75% as the limit, the duration of the 0.6% matrine was extended from 3 d to 10 d after adding nano additives, which extended the interval between pesticide spraying and reduced the use of botanical pesticides.

Key words: Frankliniella occidentalis, blue sticky traps, botanical pesticides, nano additives

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