Essential Oil‐Based Pesticides: New Insights from Old Chemistry

Isman, Murray B.; Machial, Cristina M.; Miresmailli, Saber; Bainard, Luke D.

doi:10.1002/9783527611249.ch21

Cited by 64 publications

(39 citation statements)

References 27 publications

(22 reference statements)

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“…[38][39][40][41] It appears that death of the adults, larvae, oviposition inhibition and development inhibition may be due to the suffocation and inhibition of different biosynthetic processes of the insect metabolism. 42 The mode of action of botanicals is partially attributed to interference in normal respiration that results in suffocation.…”

Section: Discussionmentioning

confidence: 99%

Synergetic effects of two botanical entomocides as pest-protectants in maize grains

2016

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Sitophilus zeamais Motschulsky infestation causes severe post-harvest losses of cereal grains in Nigeria leading to major nutritional and economic losses. A laboratory study was conducted to determine the efficacy of Myrcianthes fragrans and Aframomum melegueta seed powders and methanol extract as well as their synergetic effects on S. zeamais. The ability of the plant products to protect maize grain against S. zeamais infestation was assessed in terms of mortality 24 to 96 h posttreatment, oviposition, and adult emergence, weight loss and grains damage. M. fragrans and A. melegueta products significantly cause adult mortality of S. zeamais. M. fragrans products were the most toxic as it evoked 100% adult mortality within 24 h of application while A. melegueta products evoked 100% mortality of S. zeamais at 48 and 72 h post treatment, respectively. The synergetic effects of the plant products caused 100% adult mortality at 48 and 72 h post-treatment, respectively. Oviposition, adult emergence, weight loss and damage of the maize grains treated with the plant products were completely inhibited compared with untreated grains. The results obtained revealed that 2 g and 2% sole application of M. fragrans and mixed application of M. fragrans and A. melegueta products were effective in controlling Sitophilus zeamais post-harvest infestation and grain damage and could serve as an alternative to synthetic insecticide in ensuring steady supply of maize grains, thus ensuring food security as the plants are of medicinal and nutritional quality.

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Section: Discussionmentioning

confidence: 99%

Synergetic effects of two botanical entomocides as pest-protectants in maize grains

2016

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“…Ulat grayak merupakan hama penting kedelai yang bersifat polifag dan penyebarannya sangat luas. Serangga tersebut mengakibatkan kerusakan pada 180 jenis tanaman, di antaranya kedelai (Lewter et al 2006, Nagoshi et al 2007, Isman et al 2007. Di Jepang, kerugian akibat serangan ulat grayak pada tanaman kedelai lebih dari 80% (Komatsu et al 2010).…”

Section: Pendahuluanunclassified

Integrasi Varietas Tahan dan Bioinsektisida untuk Pengendalian Ulat Perusak Daun Kedelai

Indiati¹,

Bedjo²

2017

j. penelit. pertan. tanam. pangan

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Leaf-feeder caterpillars are important soybean pest and widely distributed in the world from tropical to sub-tropical regions, under wet and humid conditions. In Indonesia, these caterpillars attacked 1,316 hectares of soybean crops in the year 2002, and increased to 2,902 hectares in 2006. Therefore, an effective pest control method needs to be identified. An experiment on controlling leaf feeder caterpillars using bio-insecticides SLNPV and SBM, combined with the resistant varieties was conducted at Kendalpayak Experimental Farm of Indonesia Legumes and Tuber Crops Research Institute during dry season of 2016. A strip plot design with three replications was applied, where the vertical factor was varieties i.e. (1) Wilis, (2) Degra 1, and (3) G100H, and insecticides as horizontal factor i.e. (1) without insecticide, (2) 50 g of neemseed flour (SBM) deluted in 1 litre of water, (3) 2 g of SlNPV in 1 litre of water, (4) SBM + SLNPV, and (5) chemical insecticide. Results indicated that SlNPV effectively suppressed the population of caterpillars, as indicated by its lowest numbers. The treatment combination of SBM + SLNPV showed better suppression to the insect than that of chemical insecticide. The role of resistant variety Degra 1 was very important in suppressing the rate of damaged plants, as pointed out by 26% damage reduction as compared to that of susceptible variety Wilis. The effectiveness of leaf feeder caterpillars control was enhanced by combining resistant variety Degra 1 with SLNPV bio-insecticide, resulting 35% of suppression rate, equaled to that obtained by the combination of the resistant variety Degra 1 with chemical insecticide. Degra 1 variety has a potential to be recommended for planting in the endemic area of leaf feeding caterpillars'.

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“…Según Isman et al (2007), algunos constituyentes comunes de los aceites esenciales como eugenol o timol bloquean los receptores de la octopamina que es un neurotransmisor que presentan los artrópodos. Aunque estos mismos autores señalan que mecanismos físicos como disrupción de la membrana celular o bloqueo del sistema traqueal también podrían estar involucrados.…”

Section: Introductionunclassified

ACTIVIDAD INSECTICIDA, REPELENTE Y ANTIALIMENTARIA DEL POLVO Y ACEITE ESENCIAL DE FRUTOS DE Schinus molle L. PARA EL CONTROL DE Sitophilus zeamais (Motschulsky)

et al. 2017

Chil. j. agric. anim. sci.

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RESUMENEl pimiento boliviano (Schinus molle L.) es un árbol del cual se han identificado metabolitos secundarios con actividad insecticida. El objetivo fue evaluar, en condiciones de laboratorio, la actividad insecticida e insectistática del polvo y aceite esencial de frutos de S. molle sobre Sitophilus zeamais. En los bioensayos de toxicidad por contacto la mayor mortalidad se obtuvo con el aceite esencial al 8,0 % con 96,3% de insectos muertos con una CL 50 de 3,82 mL aceite esencial 100 g -1 maíz (3,82%). A la misma concentración el polvo mostró un 63,8% de mortalidad y una CL 50 de 7,95 g polvo 100 g -1 maíz (7,95%). Ambos tratamientos no afectaron significativamente la germinación ni la pérdida de peso del grano. El aceite esencial en la concentración de 8,0% provocó una completa inhibición en la emergencia mostrando una F 1 de 0% de insectos adultos. Todos los tratamientos fueron repelentes y el mayor efecto antialimentario del aceite esencial se registró con la concentración de 16% con 71,2% de inhibición. Se concluyó que el polvo y aceite esencial de S. molle presentan toxicidad insecticida por contacto y efecto repelente e inhibidor de la alimentación sobre S. zeamais. Palabras clave: pimiento boliviano, gorgojo del maíz, monoterpenos ABSTRACTThe pepper tree (Schinus molle L.) has secondary metabolites with insecticidal activity. The objective of this study was to assess under laboratory conditions the insecticidal and insectistatic activity of fruit powder and essential oil of S. molle against Sitophilus zeamais. In contact toxicity bioassays, the highest mortality was observed with essential oil at a concentration of 8.0%, recording 96.3% of dead insects with an LC 50 of 3.82 mL essential oil 100 g -1 maize (3.82%). Powder at the same concentration showed a 63.8 % of mortality with an LC 50 of 7.95 g powder 100 g -1 maize (7.95%). None of the treatments affected germination or grain weight loss. The essential oil at a concentration of 8.0% caused a complete inhibition of F 1, resulting in 0% of adult insects. All treatments had repellent effects. The highest antifeeding effect observed with the essential oil was recorded at a concentration

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Essential Oil‐Based Pesticides: New Insights from Old Chemistry

Cited by 64 publications

References 27 publications

Synergetic effects of two botanical entomocides as pest-protectants in maize grains

Synergetic effects of two botanical entomocides as pest-protectants in maize grains

Integrasi Varietas Tahan dan Bioinsektisida untuk Pengendalian Ulat Perusak Daun Kedelai

ACTIVIDAD INSECTICIDA, REPELENTE Y ANTIALIMENTARIA DEL POLVO Y ACEITE ESENCIAL DE FRUTOS DE Schinus molle L. PARA EL CONTROL DE Sitophilus zeamais (Motschulsky)

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