Dillapiol: A Pyrethrum Synergist for Control of the Colorado Potato Beetle

Liu, S. Q.; Scott, Ian M.; Pelletier, Yvan; Kramp, Kari; Durst, Tony; Sims, Steven R.; Arnason, John T.

doi:10.1603/ec13440

Cited by 30 publications

(15 citation statements)

References 47 publications

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“…The inhibition of these key enzymes demonstrates the potential of essential oils to facilitate the performance of other insecticides in pest management. These results also agree with other studies that have demonstrated a reduction of enzymatic activity after exposing different pests to several essential oils (Liu et al, 2014;Waliwitiya et al, 2012).…”

Section: Acute Toxicity To Cotton Aphidssupporting

confidence: 93%

Toxicity of Ocimum basilicum essential oil combined with thiamethoxam to cotton aphid

Marques

Landim

Silva

et al. 2019

Agraria

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Aphis gossypii Glöver is one of the main cotton insect pests, causing significant losses in the crop. In order to reduce these damages, frequent applications of insecticides are carried out, despite reported cases of resistance. One auxiliary tool of resistance management is the combination of natural and synthetic products because the combinations can deliver comparable or greater pest toxicity while reducing the necessary dose of the synthetic molecules, thus maintaining its effectiveness. Therefore, the present work evaluated the toxicity of Ocimum basilicum essential oil, the synthetic insecticide thiamethoxam and the combination of these in the control of cotton aphid. The acute toxicities of thiamethoxam and the essential oil were obtained through dose response assays; then, combinations of the two products were assessed. The essential oil had a high concentration of linalool and it exhibited toxicity to the cotton aphid. The combination of the two products caused high mortality, particularly when they were applied as the LD 50 of the thiamethoxam + LD 50 of the essential oil and the 50% LD 50 of the thiamethoxam + 50% LD 50 of the essential oil. This work concludes that O. basilicum L. essential oil combined with thiamethoxam may be an alternative in the population management of the cotton aphid and may contribute in the future to the management of resistance and reduce the environmental impact of pesticides.

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Section: Acute Toxicity To Cotton Aphidssupporting

confidence: 93%

Toxicity of Ocimum basilicum essential oil combined with thiamethoxam to cotton aphid

Marques

Landim

Silva

et al. 2019

Agraria

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“…Some authors have recommended that azadirachtin and Pyrethrum should be combined with plant oils in order to be more effective (Schulz et al, 1997;Liu et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

Effects of biological insecticides NeemAzal T/S and pyrethrum FS EC and their interaction with organic products in treatments of pea aphid Acyrthosiphon pisum (Harris) (Hemiptera: Aphididae) on Pisum sativum (L.)

Nikolova

Georgieva

2014

PESTIC PHYTOMED

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SUMMARYThe efficacy and effects of two biological insecticides, NeemAzal T/S ® and Pyrethrum FS EC, applied individually and in combination with Polyversum (a biological growth regulator and fungicide) and Biofa (an organic foliar fertilizer), in controlling Acyrthosyphon pisum population density were studied. Nurelle D (a synthetic insecticide), applied alone and in combination with Flordimex 420 (a synthetic growth regulator), was used as a standard. The products were applied once (at budding stage) or twice (at budding and flowering stages). Twenty-four variants were studied. The interaction of Pyrethrum with Biofa was the most efficient variant of the biological products, causing a reduction in aphid density that reached 48.2% after double treatment, while Pyrethrum+Polyversum (42.5%) was the second most successful treatment. The combination of Pyrethrum with Biofa achieved the highest efficacy and synergism and their efficacy approached that of the synthetic insecticide.

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“…Larew (1988) demonstrated the movement of a neem extract ingredient from a sprayed bean leaf to an unsprayed leaf on the opposite side of the plant. Liu et al (2014) recommended that azadirachtin and Pyrethrum should be combined with plant oils in order to be more effective. In this study as a result of the combination of Pyrethrum and NeemAzal with organic products Biofa and Polyversum, the bruchid numbers decreased definitely to a greater extent as compared to the relevant combinations applied once.…”

Section: Discussionmentioning

confidence: 99%

Organic cultivation of field pea by use of products with different action

Georgieva

Nikolova

Delchev

2015

Span. j. agric. res.

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The possibilities for increasing the productivity and control of the pea weevil (Bruchus pisorum L.) in field pea (Pisum sativum L.) organic cultivation by the use of following bioproducts NeemAzal T/S and Pyrethrum FS-EC (insecticides), applied individually and in combination with Polyversum (growth regulator and fungicide) and Biofa (foliar fertilizer), as well as to evaluate the stability of the used mixtures were studied. Synthetic products Nurelle D and Flordimex 420 (alone and in combination) were used as a standard. The products were applied once (at budding stage) or twice (at budding and flowering stages). The results showed that forage pea productivity was influenced positively by the application of all organic products. The plants treated with the organic combinations formed an average yield of 3190.2 kg/ha, which was only 4.7% lower than that for the synthetic combination of Flordimex+Nurelle D. The highest yield was produced under application of two mixtures: Biofa+Pyrethrum and Polyversum+Pyrethrum at budding and flowering stages (22.0 and 21.8% above untreated control, respectively). These combinations were also distinguished for their most pronounced protective effect against the attack of the pea weevil and decrease in its numbers of 37.0 and 38.5%, respectively. Pyrethrum was distinguished for a lower degree of damaged seeds and a toxic effect against the pea weevil in comparison with NeemAzal. Technologically the most valuable variant, which united high stability, productivity and protection against pea weevil, was the combination of Biofa+Pyrethrum applied twice. Further investigations are indispensible to expand the range of products (bioinsectides, biofertilizers and growth regulators), which provides good insect control and high productivity in pea organic farming conditions. Additional key words: organic products; productivity; pea weevil control; stability.

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Dillapiol: A Pyrethrum Synergist for Control of the Colorado Potato Beetle

Cited by 30 publications

References 47 publications

Toxicity of Ocimum basilicum essential oil combined with thiamethoxam to cotton aphid

Toxicity of Ocimum basilicum essential oil combined with thiamethoxam to cotton aphid

Effects of biological insecticides NeemAzal T/S and pyrethrum FS EC and their interaction with organic products in treatments of pea aphid Acyrthosiphon pisum (Harris) (Hemiptera: Aphididae) on Pisum sativum (L.)

Organic cultivation of field pea by use of products with different action

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