Abstract
Laboratory and field studies demonstrated that the organochlorine miticide dicofol is an antifeedant against the Colorado potato beetle (CPB),Leptinotarsa decemlineata (Say). The activity of dicofol as a CPB antifeedant varied considerably depending on the formulation used: The 18.5% emulsifiable concentrate (EC) formulation suppressed CPB feeding at a concentration of 0.05 g (AI)/Iiter; the 35% wettable powder (WP) formulation suppressed feeding at a concentration of 0.2 g (AI)/liter; and the nonformulated technical grade dicofol suppressed feeding at a concentration of 0.5 g (AI)/Iiter. Although a threshold response was obtained in laboratory studies, a rate response was evident when EC dicofol was applied to potatoes in the field in 1983, with 3.03 kg (AI)/ha providing excellent larval control and preventing defoliation from exceeding 10% at the end of the season, compared with >95% defoliation of untreated potatoes. In 1984, the EC formulation exhibited greater residual effectiveness than the WP formulation. Two properly timed applications of EC dicofol prevented defoliation from exceeding 20% in 1984, whereas weekly applications of WP dicofol were necessary to obtain similar levels of protection.
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Claims 9
Claim · model-written summary
Dicofol was antifeedant against Colorado potato beetle.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- dicofole0
- Interactor
- Colorado potato beetle
Leptinotarsa decemlineatae0pest - Outcome
- antifeedant against the Colorado potato beetlee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dicofol is an antifeedant against the Colorado potato beetle (CPB),Leptinotarsa decemlineata (Say)”
t0“Potato”
Claim · model-written summary
The 18.5% EC formulation suppressed beetle feeding at 0.05 g (AI)/Iiter.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 18.5% emulsifiable concentrate (EC) formulatione0
- Interactor
- CPBe0pest
- Outcome
- CPB feedinge0
- Direction
- suppressede0
- Value
- 0.05 g (AI)/Iitere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 18.5% emulsifiable concentrate (EC) formulation suppressed CPB feeding at a concentration of 0.05 g (AI)/Iiter”
t0“Potato”
Claim · model-written summary
The 35% WP formulation suppressed beetle feeding at 0.2 g (AI)/liter.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 35% wettable powder (WP) formulatione0
- Interactor
- Colorado Potato BeetleLeptinotarsa decemlineatat0pest
- Outcome
- feedinge0
- Direction
- suppressede0
- Value
- 0.2 g (AI)/litere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 35% wettable powder (WP) formulation suppressed feeding at a concentration of 0.2 g (AI)/liter”
t0“Colorado Potato Beetle”
Claim · model-written summary
Technical grade dicofol suppressed beetle feeding at 0.5 g (AI)/Iiter.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- nonformulated technical grade dicofole0
- Interactor
- Colorado Potato BeetleLeptinotarsa decemlineatat0pest
- Outcome
- feedinge0
- Direction
- suppressede0
- Value
- 0.5 g (AI)/Iitere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nonformulated technical grade dicofol suppressed feeding at a concentration of 0.5 g (AI)/Iiter”
t0“Colorado Potato Beetle”
Claim · model-written summary
Field EC dicofol showed a rate response in 1983.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- EC dicofole0
- Outcome
- rate responsee0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a rate response was evident when EC dicofol was applied to potatoes in the field in 1983”
Claim · model-written summary
At 3.03 kg (AI)/ha, EC dicofol held potato defoliation below 10% versus above 95% in untreated plants.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- 3.03 kg (AI)/hae0
- Interactor
- Colorado Potato BeetleLeptinotarsa decemlineatat0pest
- Outcome
- defoliatione0
- Direction
- preventinge0
- Value
- 10%e0
- Qualifier
- >95%e0
- Comparator
- untreated potatoese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with 3.03 kg (AI)/ha providing excellent larval control and preventing defoliation from exceeding 10% at the end of the season, compared with >95% defoliation of untreated potatoes”
t0“Colorado Potato Beetle”
Claim · model-written summary
The EC formulation was more residually effective than WP in 1984.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- EC formulatione0
- Interactor
- Colorado Potato BeetleLeptinotarsa decemlineatat0pest
- Outcome
- residual effectivenesse0
- Direction
- greatere0
- Comparator
- WP formulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1984, the EC formulation exhibited greater residual effectiveness than the WP formulation”
t0“Colorado Potato Beetle”
Claim · model-written summary
Two timed EC applications kept 1984 defoliation below 20%.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Two properly timed applications of EC dicofole0
- Interactor
- Colorado Potato BeetleLeptinotarsa decemlineatat0pest
- Outcome
- defoliatione0
- Direction
- preventede0
- Value
- 20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two properly timed applications of EC dicofol prevented defoliation from exceeding 20% in 1984”
t0“Colorado Potato Beetle”
Claim · model-written summary
Weekly WP applications were required for similar defoliation protection.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- weekly applications of WP dicofole0
- Interactor
- Colorado Potato BeetleLeptinotarsa decemlineatat0pest
- Outcome
- similar levels of protectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weekly applications of WP dicofol were necessary to obtain similar levels of protection”
t0“Colorado Potato Beetle”
The same questions in other papers
dicofol · Leptinotarsa decemlineata · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
botanical · Leptinotarsa decemlineata · Solanum tuberosum (potato)Positive and negative results
14 papers in the same direction as this paper · 5 in the opposite direction
- negative
- negative
- no effect
16 papers more in this group
See all 20 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.