Journal of Crop Protection
Journal of Crop Protection
JCP
Agriculture
http://jcp.modares.ac.ir
1
admin
2251-9041
2251-905X
en
jalali
1395
12
1
gregorian
2017
3
1
6
1
online
1
fulltext
en
Toxicity and repellent effect of essential oils and a major component against Lipaphis erysimi
Essential oils (EOs) extracted from aerial parts of <em>Aster indamellus </em>Grierson<em>, Calamintha umbrosa</em> Benth. and <em>Erigeron annuus </em>(L.) Pres.were analyzed by GC, GC/MS. The major acetylenic constituent (<em>cis</em>-lachnophyllum ester) of <em>E. annuus</em> was isolated and characterized by <sup>1</sup>H and <sup>13</sup>C-NMR spectra. Their toxicity and repellent effect against <em>Lipaphis</em><em>erysimi</em> was tested<em>.</em> Oils of <em>E. annuus</em> and<em> C. umbrosa</em> exhibited higher toxicity on direct spray and by fumigation. LC<sub>50</sub> value of <em>E. annuus</em> oil was 0.43 mg/ml as direct spray. By fumigation, LC<sub>50</sub> value for <em>E. annuus</em> was 1.29 ml/l air, while for <em>C. umbrosa</em>;it was 1.00 ml/l air<em>.</em> With acetylenic ester, about half of <em>L. erysimi</em> were killed at 10 mg/ml approximately within 13.25 h, while with <em>E. annuus</em> oil the LT<sub>50</sub> value was approximately 8.89 h. In conclusion, the EO of <em>E. annuus</em> and its acetylenic constituent have potential as biopesticide for economically important crop pests.
Essential oil,cis-lachnophyllum ester,Lipaphis erysimi,toxicity,repellence
15
23
http://jcp.modares.ac.ir/browse.php?a_code=A-3-16572-1&slc_lang=en&sid=3
Vinod
Kumar
Vinod
Kumar
100319475328460067612
100319475328460067612
Yes
Department of Chemistry, Kumaun University, Nainital 263002, Uttarakhand, India.
Department of Chemistry, Kumaun University, Nainital 263002, Uttarakhand, India.
Chandra
Shekhar Mathela
Chandra
Shekhar Mathela
100319475328460067613
100319475328460067613
No
Department of Chemistry, Kumaun University, Nainital 263002, Uttarakhand, India.
Department of Chemistry, Kumaun University, Nainital 263002, Uttarakhand, India.