Abstract
BACKGROUND: The objective was to assess the effect of two contact insecticides, lambda-cyhalothrin and flonicamid, and three systemic insecticides, pymetrozine, dimethoate and imidacloprid, on the behavior and potato virus Y (PVY) acquisition of three aphid species, Macrosiphum euphorbiae (Thomas), Rhopalosiphum padi L. and Aphis fabae (Scopoli). RESULTS: At 1-4 days after application, contact insecticides strongly modified aphid behavior and intoxicated them. Dimethoate sprayed on potato plants did not change the behavior of the three tested aphid species, while imidacloprid slightly reduced the probing behavior of M. euphorbiae and intoxicated several R. padi. The residual effect of the insecticides (10-21 days after application) was almost non-existent. No intoxication was found, and only slight changes in the behavior of R. padi and A. fabae were observed. The acquisition of PVY by R. padi was reduced on lambda-cyhalothrin- and dimethoate-treated plants that were sprayed a few days before the test. CONCLUSION: One systemic and two contact insecticides were effective at intoxicating aphids and reducing probing behavior soon after application. Some insecticides might sporadically reduce the spread of PVY either by modifying the behavior or reducing PVY acquisition, but their action is likely limited to a short period of time after application.
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Claims 9
Claim · model-written summary
Contact insecticides modified and intoxicated aphids at 1-4 days.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- contact insecticidese0
- Outcome
- aphid behaviore0
- Direction
- modifiede0
- Qualifier
- 1-4 days after applicatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 1-4 days after application, contact insecticides strongly modified aphid behavior and intoxicated them.”
t0“potato plants”
Claim · model-written summary
Dimethoate did not change aphid behavior.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Dimethoatee0
- Outcome
- behavior of the three tested aphid speciese0
- Direction
- did not changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dimethoate sprayed on potato plants did not change the behavior of the three tested aphid species”
Claim · model-written summary
Imidacloprid slightly reduced probing by M. euphorbiae.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- imidaclopride0
- Interactor
- M. euphorbiae
Macrosiphum euphorbiaee0pest - Outcome
- probing behavior of M. euphorbiaee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“imidacloprid slightly reduced the probing behavior of M. euphorbiae”
t0“potato plants”
Claim · model-written summary
Imidacloprid intoxicated several R. padi.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- imidaclopride0
- Interactor
- R. padi
_Figure_1_a.jpg?width=60)
Rhopalosiphum padie0pest - Outcome
- intoxicated several R. padie0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Figure_1_a.jpg?width=500)
Verbatim
e0“imidacloprid slightly reduced the probing behavior of M. euphorbiae and intoxicated several R. padi”
t0“potato plants”
Claim · model-written summary
Residual insecticide effects were almost absent at 10-21 days.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- residual effect of the insecticidese0
- Qualifier
- 10-21 days after applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The residual effect of the insecticides (10-21 days after application) was almost non-existent.”
t0“potato plants”
Claim · model-written summary
No aphid intoxication occurred at 10-21 days.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- No intoxicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No intoxication was found”
t0“potato plants”
Claim · model-written summary
Only slight behavioral changes in R. padi and A. fabae occurred later.
- Taxon
- potatoSolanum tuberosumt0
- Interactor
- R. padiRhopalosiphum padie0pest
- Second interactor
- A. fabae
Aphis fabaee0pest - Outcome
- changes in the behavior of R. padi and A. fabaee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only slight changes in the behavior of R. padi and A. fabae were observed”
t0“potato plants”
Claim · model-written summary
Lambda-cyhalothrin reduced PVY acquisition by R. padi.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- lambda-cyhalothrine0
- Interactor
- R. padiRhopalosiphum padie0pest
- Outcome
- acquisition of PVY by R. padie0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The acquisition of PVY by R. padi was reduced on lambda-cyhalothrin- and dimethoate-treated plants that were sprayed a few days before the test.”
t0“potato plants”
Claim · model-written summary
Dimethoate reduced PVY acquisition by R. padi.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- dimethoatee0
- Interactor
- R. padiRhopalosiphum padie0pest
- Outcome
- acquisition of PVY by R. padie0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The acquisition of PVY by R. padi was reduced on lambda-cyhalothrin- and dimethoate-treated plants that were sprayed a few days before the test.”
t0“potato plants”
The same questions in other papers
imidacloprid · Macrosiphum euphorbiae · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
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.