Abstract
Abstract In January 2005, the United States Environmental Protection Agency registered spinosad as a stored grain protectant. No referenced data on the efficacy of spinosad on corn in suppressing major stored‐grain insects have been published. In this paper, we evaluated the efficacy of spinosad against seven major stored‐grain insects on shelled corn in the laboratory. Insect species tested were the red flour beetle, Tribolium castaneum (Jacquelin duVal); rusty grain beetle, Cryptolestesferrugineus (Stephens); lesser grain borer, Rhyzopertha dominica (F.); sawtoothed grain beetle, Oryzaephilus surinamensis (L.); rice weevil, Sitophilus oryzae (L.); maize weevil, Sitophilus zeamais (Motschulsky); and Indian meal moth, Plodia interpunctella (Hübner). Corn kernels were treated with spinosad at 0, 0.1, 0.5, 1, and 2 active ingredient (a.i.) mg/kg for controlling the seven species. Beetle adults or P. interpunctella eggs were introduced into each container holding 100 g of untreated or insecticide‐treated corn. The seven insect species survived well on the control treatment, produced 28 to 336 progeny, and caused significant kernel damage after 49 days. On spinosad‐treated corn, adult mortality of C. ferrugineus, R. dominica, O. surinamensis, S. oryzae , and S. zeamais was > 98% at 1 and 2 mg/kg after 12 days. Spinosad at > 0.5 mg/kg completely suppressed egg‐to‐larval survival after 21 days and egg‐to‐adult emergence of P. interpunctella after 49 days, whereas 16% T. castaneum adults survived at 1 mg/kg after 12 days. Spinosad at 1 or 2 mg/kg provided complete or near complete suppression of progeny production and kernel damage of all species after 49 days. Our results indicate that spinosad at the current labeled rate of 1 mg/kg is effective against the seven stored‐grain insect pests on corn.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Adult mortality of five stored-grain insect species on spinosad-treated corn was above 98% at 1 and 2 mg/kg after 12 days.
- Taxon
- corn
Zea mays subsp. mayse6 - Treatment
- spinosade1
- Interactor
- C. ferrugineuse1pest
- Second interactor
- R. dominica
Rhyzopertha dominicae1pest - Outcome
- adult mortalitye1
- Direction
- increaseinferrede1
- Value
- > 98%e1
- Qualifier
- O. surinamensis, S. oryzae , and S. zeamaise1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“On spinosad‐treated corn, adult mortality of C. ferrugineus, R. dominica, O. surinamensis, S. oryzae , and S. zeamais was > 98% at 1 and 2 mg/kg after 12 days”
e6“Our results indicate that spinosad at the current labeled rate of 1 mg/kg is effective against the seven stored‐grain insect pests on corn”
Claim · model-written summary
Spinosad at more than 0.5 mg/kg completely suppressed egg-to-larval survival after 21 days on corn.
- Taxon
- cornZea mays subsp. mayse6
- Treatment
- Spinosad at > 0.5 mg/kge2
- Outcome
- egg‐to‐larval survivale2
- Direction
- completely suppressede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Spinosad at > 0.5 mg/kg completely suppressed egg‐to‐larval survival after 21 days”
e6“Our results indicate that spinosad at the current labeled rate of 1 mg/kg is effective against the seven stored‐grain insect pests on corn”
Claim · model-written summary
Of T. castaneum adults, 16% survived at 1 mg/kg after 12 days on spinosad-treated corn.
- Taxon
- cornZea mays subsp. mayse6
- Treatment
- 1 mg/kge4
- Interactor
- T. castaneum
Tribolium castaneume4pest - Outcome
- T. castaneum adultse4
- Direction
- survivede4
- Value
- 16%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“16% T. castaneum adults survived at 1 mg/kg after 12 days”
e6“Our results indicate that spinosad at the current labeled rate of 1 mg/kg is effective against the seven stored‐grain insect pests on corn”
Claim · model-written summary
Spinosad at 1 or 2 mg/kg provided complete or near complete suppression of progeny production and kernel damage of all stored-grain insect species after 49 days.
- Taxon
- cornZea mays subsp. mayse6
- Treatment
- Spinosad at 1 or 2 mg/kge5
- Interactor
- stored‐grain insect pestse6pest
- Outcome
- progeny production and kernel damagee5
- Direction
- suppressione5
- Qualifier
- of all speciese5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Spinosad at 1 or 2 mg/kg provided complete or near complete suppression of progeny production and kernel damage of all species after 49 days”
e6“Our results indicate that spinosad at the current labeled rate of 1 mg/kg is effective against the seven stored‐grain insect pests on corn”
Claim · model-written summary
Spinosad at the current labeled rate of 1 mg/kg is recommended as effective against the seven stored-grain insect pests on corn.
- Taxon
- cornZea mays subsp. mayse6
- Treatment
- spinosad at the current labeled rate of 1 mg/kge6
- Outcome
- effective against the seven stored‐grain insect pestse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Our results indicate that spinosad at the current labeled rate of 1 mg/kg is effective against the seven stored‐grain insect pests on corn”
Claim · model-written summary
Control insects produced 28 to 336 progeny on untreated corn after 49 days.
- Taxon
- cornZea mays subsp. mayse6
- Interactor
- seven insect speciese7pest
- Outcome
- progenye7
- Value
- 28 to 336e7
- Qualifier
- control treatmente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Our results indicate that spinosad at the current labeled rate of 1 mg/kg is effective against the seven stored‐grain insect pests on corn”
e7“The seven insect species survived well on the control treatment, produced 28 to 336 progeny, and caused significant kernel damage after 49 days”
Claim · model-written summary
Control insects caused significant kernel damage on corn after 49 days.
- Taxon
- cornZea mays subsp. mayse6
- Interactor
- seven insect speciese7pest
- Outcome
- kernel damagee7
- Qualifier
- control treatmente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Our results indicate that spinosad at the current labeled rate of 1 mg/kg is effective against the seven stored‐grain insect pests on corn”
e7“The seven insect species survived well on the control treatment, produced 28 to 336 progeny, and caused significant kernel damage after 49 days”
The same questions in other papers
spinosad · pest · Zea mays (maize)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.