รายละเอียดวารสารวิชาการ

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  2. รายชื่อนักวิจัย
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  4. ข้อมูลวารสารวิชาการ

ชื่องานวิจัย ( Article Name)

Efficiency of extracts from indigenous herbs of northeastern Thailand in controlling the tobacco cutworm Spodoptera litula (F.). As.J.Food Ag-Ind. 2 (Special Issue) : 234-240.

บทคัดย่อ ( Abstract )

The insecticidal, inhibiting growth and anti-feedant properties of hexane, acetone and ethanol extracts of three indigenous herbs of northeastern Thailand (Anethum graveolens Linn., Oroxylum indicum Linn. and Polygonum odoratum Lour.) were investigated on the 2nd instar larvae of tobacco cutworm, Spodoptera litura F. The leaf dipping method using various concentrations of extracts; 0.0 (10% Tween-20 as control), 2% (0.29 mg/cm2), 4% (0.58 mg/cm2), 6% (0.87 mg/cm2), 8% (1.16 mg/cm2) and 10% (1.45 mg/cm2) were applied. The results showed that the hexane extract of A. graveolens and P. odoratum were highly effective in controlling tobacco cutworm. Extracts at concentrations of 10% (1.45 mg/cm2) completely controlled the cutworm within 72 hours and showed the LD50 of 0.29 and 0.33 mg/cm2 (w/v), respectively. These two extracts were effective at inhibiting the growth of the cutworm larval stage but could not inhibit the growth of pupae developing into adult. All extracts from the three test plant species had low anti-feedant efficiencies.

เอกสารวิจัย ( Paper )

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ผู้เขียน ( Authors )

  • Jarongsak Pumnuan
  • Ammorn Insung

ข้อมูลการเผยแพร่ ( Journal Infomation )