CHEMICAL COMPOSITION AND INSECTICIDAL EFFICACY OF VITEX NEGUNDO L. ESSENTIAL OIL AGAINST FALL ARMYWORM, SPODOPTERA FRUGIPERDA (J. E. SMITH)

Q3 Agricultural and Biological Sciences

journal of biopesticides Pub Date : 2024-06-01 DOI:10.57182/jbiopestic.16.1.16-23

Rohit S. Parchande, Anuradha K Shinde, S. Yankanchi

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Abstract

The fall armyworm, Spodoptera frugiperda, is a key pest ofmaize crops in tropical and subtropical regions and has developed resistanceagainst synthetic pesticides and Bacillus thuringiensis toxins. Thus,the experiments were designed to evaluate the chemical analysis andinsecticidal efficacy of Vitex negundo against S. frugiperda.Chemical analysis of V. negundo essential oil revealed a total of 36compounds, and the oil contained more monoterpenes (68.16%) than sesquiterpenes(22.21%) and diterpenes (13.56%). For the ovicidal and insecticidal activities,the essential oil was found to be most effective, with a median lethalconcentration (LC50) value of 51.31 µL/mL and 0.29 L/larvae, respectively.Larval antifeedant and growth inhibitory activity of essential oil werepositively correlated (R2 = 0.9645) and (R2 = 0.9727) with oil concentrations,respectively. Therefore, the V. negundo essential oil can be used forthe development of bioinsecticides to control S. frugiperda, a highlyinvasive and polyphagous pest, which will replace chemical pesticides.

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蔓荆子精油的化学成分和对秋季军虫(spodoptera frugiperda (J. E. smith))的杀虫功效

秋虫（Spodoptera frugiperda）是热带和亚热带地区玉米作物的主要害虫，对合成杀虫剂和苏云金芽孢杆菌毒素产生了抗药性。黑荆芥精油的化学分析结果表明，黑荆芥精油中共含有 36 种化合物，其中单萜类化合物的含量（68.16%）高于倍半萜类化合物（22.21%）和二萜类化合物（13.56%）。在杀卵和杀虫活性方面，精油的效果最好，其致死浓度中值（LC50）分别为 51.31 µL/mL 和 0.29 L/幼虫。因此，V. negundo 精油可用于开发生物杀虫剂来控制 S. frugiperda（一种高入侵性和多食性害虫），从而取代化学农药。

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来源期刊

journal of biopesticides Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

0.80

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0.00%

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