Abstract
Colorado potato beetle, Leptinotarsa decemlineata (Say), population trends were monitored in potatoes, Solanum tuberosum L., grown in plots with and without straw mulch during 1988 and 1989 growing seasons in Virginia. An insecticide treatment was incorporated into a factorial experimental design (mulch × insecticide) in 1989 to evaluate effects of mulch on potato yield without Colorado potato beetle defoliation. Numbers of overwintered adult beetles, egg masses, and larvae were significantly lower in plots with mulch compared with those without. Soil temperature and moisture conditions were more favorable for potato plant growth in Virginia under straw mulch than in bare ground (no mulch) plots. Final tuber yields were significantly greater in mulched plots (with and without insecticides) compared with plots without mulch in both years of the study. Application of insecticides in 1989 also resulted in higher yields within each mulch treatment. In plots treated with insecticides, six spray applications were required to control Colorado potato beetle populations above economic thresholds in plots without mulch, compared with two applications in plots with mulch. The feasibility of the use of straw mulch in commercial potato production is discussed.
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Claims 7
Claim · model-written summary
Mulch significantly reduced overwintered adult Colorado potato beetle numbers.
- Taxon
- potatoes
Solanum tuberosumt0 - Treatment
- plots with mulche0
- Interactor
- Colorado potato beetle
Leptinotarsa decemlineatat0peste1 - Outcome
- Numbers of overwintered adult beetlese0
- Direction
- lowere0
- Comparator
- those withoute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Numbers of overwintered adult beetles, egg masses, and larvae were significantly lower in plots with mulch compared with those without”
t0“Colorado Potato Beetle (Coleoptera: Chrysomelidae) Population Development and Effects on Yield of Potatoes”
e1“An insecticide treatment was incorporated into a factorial experimental design (mulch × insecticide) in 1989 to evaluate effects of mulch on potato yield without Colorado potato beetle defoliation”
Claim · model-written summary
Mulch significantly reduced Colorado potato beetle egg masses.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- plots with mulche0
- Interactor
- Colorado potato beetleLeptinotarsa decemlineatat0peste1
- Outcome
- egg massese0
- Direction
- lowere0
- Comparator
- those withoute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Numbers of overwintered adult beetles, egg masses, and larvae were significantly lower in plots with mulch compared with those without”
t0“Colorado Potato Beetle (Coleoptera: Chrysomelidae) Population Development and Effects on Yield of Potatoes”
e1“Colorado potato beetle, Leptinotarsa decemlineata (Say)”
Claim · model-written summary
Mulch significantly reduced Colorado potato beetle larvae.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- plots with mulche0
- Interactor
- Colorado potato beetleLeptinotarsa decemlineatat0peste1
- Outcome
- larvaee0
- Direction
- lowere0
- Comparator
- those withoute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Numbers of overwintered adult beetles, egg masses, and larvae were significantly lower in plots with mulch compared with those without”
t0“Colorado Potato Beetle (Coleoptera: Chrysomelidae) Population Development and Effects on Yield of Potatoes”
e1“Colorado potato beetle, Leptinotarsa decemlineata (Say)”
Claim · model-written summary
Mulch improved soil temperature and moisture conditions for potato growth relative to bare ground.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- straw mulche0
- Outcome
- Soil temperature and moisture conditionse0
- Direction
- more favorablee0
- Comparator
- bare ground (no mulch) plotse0
- Setting
- Virginiae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil temperature and moisture conditions were more favorable for potato plant growth in Virginia under straw mulch than in bare ground (no mulch) plots”
Claim · model-written summary
Mulched plots had significantly greater final tuber yield than plots without mulch in both years.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- mulched plotse0
- Outcome
- Final tuber yieldse0
- Direction
- greatere0
- Qualifier
- both years of the studye0
- Comparator
- plots without mulche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Final tuber yields were significantly greater in mulched plots (with and without insecticides) compared with plots without mulch in both years of the study”
t0“Potatoes”
Claim · model-written summary
Insecticide application increased yield within each mulch treatment in 1989.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- Application of insecticidese0
- Outcome
- yieldse0
- Direction
- highere0
- Qualifier
- 1989e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of insecticides in 1989 also resulted in higher yields within each mulch treatment”
t0“Potatoes”
Claim · model-written summary
Controlling Colorado potato beetles above economic thresholds required six sprays without mulch versus two with mulch.
- Taxon
- PotatoesSolanum tuberosumt0
- Treatment
- plots with mulche0
- Interactor
- Colorado potato beetleLeptinotarsa decemlineatae0peste2
- Outcome
- spray applications were required to control Colorado potato beetle populationse0
- Value
- two applicationse0
- Qualifier
- six spray applicationse0
- Comparator
- plots without mulche0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“six spray applications were required to control Colorado potato beetle populations above economic thresholds in plots without mulch, compared with two applications in plots with mulch”
t0“Potatoes”
e2“Colorado potato beetle, Leptinotarsa decemlineata (Say)”
The same questions in other papers
mulching · Leptinotarsa decemlineata · Solanum tuberosum (potato)Results differ
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- positive
- positive
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insecticide · yield · Solanum tuberosum (potato)Results differ
21 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative
- no effect
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56 papers in the same direction as this paper · 7 in the opposite direction
- no effect
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5 papers in the same direction as this paper
- positive
- positive
- positive
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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.