Abstract
Pyrifluquinazon modifies insect behavior by rapidly stopping feeding so that insects starve to death. In the present study, the effects of two nano types of pyrifluquinazon and a non-nano type of pyrifluquinazon on mortality of the green peach aphid, Myzus persicae, were investigated using three different concentrations (25, 50, and 100 ppm). The nano types of pyrifluquinazon were formulated with a different molecular weight and density than that of chitosan (CS 30,000, 0.1% and CS 3000, 0.3%) for stability of unsteady core materials. According to the bioassay and the increased rate of aphids, both types of pyrifluquinazon at all concentrations were effective for controlling M. persicae. The CS 3000 0.3% nano type pyrifluquinazon exhibited a more effective controlled-release feature than that of the other type. The two nano types and the non-nano type pyrifluquinazon were bioassayed against M. persicae, and feeding behaviors were compared using the electrical penetration graph technique. The non-nano type appeared to have the best lethal efficiency at 2 days after treatment at 50 and 25 ppm according to the non-penetration time; however, both CS 30,000 0.1% and CS 3000 0.3% were effective at 14 days after treatment. Furthermore, reaction time slowed from 14 to 30 days after treatment in the CS 3000 0.3% treated aphids. As a result, CS 3000 0.3% had more effective controlled release at both concentrations.
| Original language | English |
|---|---|
| Pages (from-to) | 533-541 |
| Number of pages | 9 |
| Journal | Journal of Asia-Pacific Entomology |
| Volume | 15 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2012 Dec 1 |
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Keywords
- Encapsulation technique
- EPG
- Myzus persicae
- Pyrifluquinazon
ASJC Scopus subject areas
- Insect Science
Cite this
Insecticidal activity and feeding behavior of the green peach aphid, Myzus persicae, after treatment with nano types of pyrifluquinazon. / Kang, Min Ah; Seo, Mi Ja; Hwang, In Cheon; Jang, Chul; Park, Hyun Jin; Yu, Yong Man; Youn, Young Nam.
In: Journal of Asia-Pacific Entomology, Vol. 15, No. 4, 01.12.2012, p. 533-541.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Insecticidal activity and feeding behavior of the green peach aphid, Myzus persicae, after treatment with nano types of pyrifluquinazon
AU - Kang, Min Ah
AU - Seo, Mi Ja
AU - Hwang, In Cheon
AU - Jang, Chul
AU - Park, Hyun Jin
AU - Yu, Yong Man
AU - Youn, Young Nam
PY - 2012/12/1
Y1 - 2012/12/1
N2 - Pyrifluquinazon modifies insect behavior by rapidly stopping feeding so that insects starve to death. In the present study, the effects of two nano types of pyrifluquinazon and a non-nano type of pyrifluquinazon on mortality of the green peach aphid, Myzus persicae, were investigated using three different concentrations (25, 50, and 100 ppm). The nano types of pyrifluquinazon were formulated with a different molecular weight and density than that of chitosan (CS 30,000, 0.1% and CS 3000, 0.3%) for stability of unsteady core materials. According to the bioassay and the increased rate of aphids, both types of pyrifluquinazon at all concentrations were effective for controlling M. persicae. The CS 3000 0.3% nano type pyrifluquinazon exhibited a more effective controlled-release feature than that of the other type. The two nano types and the non-nano type pyrifluquinazon were bioassayed against M. persicae, and feeding behaviors were compared using the electrical penetration graph technique. The non-nano type appeared to have the best lethal efficiency at 2 days after treatment at 50 and 25 ppm according to the non-penetration time; however, both CS 30,000 0.1% and CS 3000 0.3% were effective at 14 days after treatment. Furthermore, reaction time slowed from 14 to 30 days after treatment in the CS 3000 0.3% treated aphids. As a result, CS 3000 0.3% had more effective controlled release at both concentrations.
AB - Pyrifluquinazon modifies insect behavior by rapidly stopping feeding so that insects starve to death. In the present study, the effects of two nano types of pyrifluquinazon and a non-nano type of pyrifluquinazon on mortality of the green peach aphid, Myzus persicae, were investigated using three different concentrations (25, 50, and 100 ppm). The nano types of pyrifluquinazon were formulated with a different molecular weight and density than that of chitosan (CS 30,000, 0.1% and CS 3000, 0.3%) for stability of unsteady core materials. According to the bioassay and the increased rate of aphids, both types of pyrifluquinazon at all concentrations were effective for controlling M. persicae. The CS 3000 0.3% nano type pyrifluquinazon exhibited a more effective controlled-release feature than that of the other type. The two nano types and the non-nano type pyrifluquinazon were bioassayed against M. persicae, and feeding behaviors were compared using the electrical penetration graph technique. The non-nano type appeared to have the best lethal efficiency at 2 days after treatment at 50 and 25 ppm according to the non-penetration time; however, both CS 30,000 0.1% and CS 3000 0.3% were effective at 14 days after treatment. Furthermore, reaction time slowed from 14 to 30 days after treatment in the CS 3000 0.3% treated aphids. As a result, CS 3000 0.3% had more effective controlled release at both concentrations.
KW - Encapsulation technique
KW - EPG
KW - Myzus persicae
KW - Pyrifluquinazon
UR - http://www.scopus.com/inward/record.url?scp=84864037288&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84864037288&partnerID=8YFLogxK
U2 - 10.1016/j.aspen.2012.05.015
DO - 10.1016/j.aspen.2012.05.015
M3 - Article
AN - SCOPUS:84864037288
VL - 15
SP - 533
EP - 541
JO - Journal of Asia-Pacific Entomology
JF - Journal of Asia-Pacific Entomology
SN - 1226-8615
IS - 4
ER -