首页> 外文期刊>Journal of Economic Entomology >Peppermint Essential Oil Toxicity to the Pear Psylla (Hemiptera: Psyllidae) and Potential Applications in the Field
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Peppermint Essential Oil Toxicity to the Pear Psylla (Hemiptera: Psyllidae) and Potential Applications in the Field

机译:薄荷对梨Psylla(Hemiptera:psyllidae)和潜在应用的薄荷精油毒性

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摘要

Chinese pear psylla (Cacopsylla chinensis Yang et Li) is a serious orchard pest that causes declines in fruit quality through feeding damage and the spread of pathogens. The rapid development of chemical pesticide resistance has become a severe problem in controlling pear psylla. Thus, the development of natural pesticides to replace conventional chemical pesticides is urgently needed. Here, we found that the essential oil of peppermint (Mentha haplocalyx Briq. [Lamiales: Labiatae]) is an ideal agent for controlling pear psylla based on experiments in the laboratory and the field. The major constituents of peppermint essential oil were found including menthol (49.73%), menthone (30.52%), α-pinene (3.60%), and α-terpineol (3.81%). This oil and chemicals in it performed serious contact toxicity against the winter-form adults and nymphs of pear psylla, yielding LD_(50) values of 2.54, 10.71, 2.77, 5.85, and 12.58 μg/adult and 1.91, 9.56, 2.18, 4.98, and 12.07 μg/nymph, respectively. Furthermore, the essential oil strongly repelled the adults of pear psylla with 78% repellence at the highest concentration tested in a Y-tube olfactometer in the laboratory. The combined effect of the two factors made peppermint essential oil a natural pesticide, which achieved a maximum reduction of round to 80.9% in winter-form adult population and round to 67.0% in nymph population at the concentration of 4.0 ml/L in the field. Additionally, it had no effect on the natural enemies of pear psylla in the field. Therefore, peppermint essential oil has potential as an alternative to chemical pesticides for pest control in integrated pest management programs in pear orchards.
机译:中国梨Psylla(Cacopsylla chinensis yanget li)是一种严重的果树,通过喂养损坏和病原体的传播导致水果质量下降。化学农药抗性的快速发展已成为控制梨Psylla的严重问题。因此,迫切需要发展自然农药以取代常规化学农药。在这里,我们发现薄荷的精油(Mentha Haplocalyx Briq。[Lamiales:Labiatae])是基于实验室和现场的实验来控制梨Psylla的理想剂。发现薄荷精油的主要成分包括薄荷醇(49.73%),薄膜(30.52%),α-突烯(3.60%)和α-萜烯(3.81%)。这种油和化学品在其对冬季成人和梨Psylla的若虫进行严重的接触毒性,产生LD_(50)的值2.54,10.71,2.77,5.85和12.58μg/成人,1.91,9.56,2.18,4.98分别为12.07μg/ nymph。此外,精油强烈排斥梨Psylla的成虫,在实验室中的Y管嗅觉表中测试的最高浓度,78%的排斥。两种因素的综合效果使薄荷精油是一种天然农药,这在冬季成年人群中最大限度地降低至80.9%,并在田间浓度为4.0毫升/升的若虫人群中的67.0% 。此外,它对田间梨Psylla的天敌没有影响。因此,薄荷精油具有含有化学农药的替代品,可替代梨果园综合害虫管理计划。

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