What question did this study set out to answer?

To evaluate the insecticidal efficacy of spinosad dust against two stored-grain beetle species across wheat, barley, and maize, and to measure pesticide dissipation over time.

October 1, 2008International Journal of Pest Management

Influence of commodity on the effect of spinosad dust againstRhyzopertha dominica(F.) (Coleoptera: Bostrychidae) andSitophilus oryzae(L.) (Coleoptera: Curculionidae)

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Authors

GCGeorge J. ChintzoglouAgricultural University of Athens CAChristos G. AthanassiouUniversity of Thessaly AMAnastasios N. MarkoglouAgricultural University of Athens

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Implication

Laboratory bioassay demonstrates commodity-dependent spinosad efficacy against stored-grain beetles, indicating accelerated degradation in maize impairs pest control.

Key Points

To evaluate the insecticidal efficacy of spinosad dust against two stored-grain beetle species across wheat, barley, and maize, and to measure pesticide dissipation over time.
Applied spinosad dust at rates of 0.025, 0.125, 0.625, and 1.25 ppm active ingredient to wheat, barley, and maize grains.
Assessed adult beetle mortality at 7 and 14 days and counted subsequent adult progeny production.
Quantified spinosyn residue dissipation at 14 days using high-performance liquid chromatography/mass spectrometry (LC/MS).
Rhyzopertha dominica mortality reached 100% at doses ≥0.125 ppm after 14 days without significant differences across commodities.
Sitophilus oryzae adult mortality exceeded 95% only at 1.25 ppm after 14 days, with significantly higher mortality on wheat than on barley and maize.
LC/MS analysis showed accelerated spinosad degradation in maize at 14 days, slight degradation in barley, and negligible degradation in wheat.

Cite This Study

Chintzoglou et al. (2008) studied this question.

synapsesocial.com/papers/6a8b248ceee946ed63e3af37 https://doi.org/10.1080/09670870802010849

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Implication

Laboratory bioassay demonstrates commodity-dependent spinosad efficacy against stored-grain beetles, indicating accelerated degradation in maize impairs pest control.

Influence of commodity on the effect of spinosad dust againstRhyzopertha dominica(F.) (Coleoptera: Bostrychidae) andSitophilus oryzae(L.) (Coleoptera: Curculionidae)

Discussion

Member takes

Implication

Key Points

Cite This Study

Influence of commodity on the effect of spinosad dust againstRhyzopertha dominica(F.) (Coleoptera: Bostrychidae) andSitophilus oryzae(L.) (Coleoptera: Curculionidae)

Discussion

Member takes

Implication

Key Points

Cite This Study

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