Abstract
Experiments were conducted to assess the damage of the glasshouse cucumber by twospotted spider mite, Tetranychus urticae Koch, and to investigate when the economic yield begins to decrease after T. urticae infestations. To assess the damage, dry matter partitioning in the cucumber plant was quantified and plant growth analyses were conducted at four different T. urticae infestation levels. T. urticae infestations decreased leaf productivity by reducing the total number of leaves per plant. Approximately 14% reductions of total leaf areas could result in significant yield loss. The decreased leaf productivity by T. urticae feeding caused biomass reductions and altered the pattern of dry matter partitioning in the plant; damaged plants accumulated more dry matter in the leaf, and partitioning of dry matter to fruits was hindered. The economic yield of cucumber began to significantly decrease as early as 4 wk after heavy mite infestations. This study also showed the seasonal differences in T. urticae-cucumber damage interactions among mite infestation levels.
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Claims 7
Claim · model-written summary
Mite infestations reduced the number of cucumber leaves per plant.
- Taxon
- Cucumbers
Cucumis sativust0 - Treatment
- T. urticae infestationse0
- Interactor
- T. urticae
.jpg?width=60)
Tetranychus urticaee0pest - Outcome
- total number of leaves per plante0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“T. urticae infestations decreased leaf productivity by reducing the total number of leaves per plant.”
t0“Glasshouse Cucumbers”
Claim · model-written summary
About 14% loss of leaf area could cause significant yield loss.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Approximately 14% reductions of total leaf areas could result in significant yield loss.”
t0“Glasshouse Cucumbers”
Claim · model-written summary
Mite feeding reduced cucumber biomass.
- Taxon
- CucumbersCucumis sativust0
- Treatment
- T. urticae feedinge0
- Interactor
- T. urticaeTetranychus urticaee0pest
- Outcome
- biomasse0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decreased leaf productivity by T. urticae feeding caused biomass reductions”
t0“Glasshouse Cucumbers”
Claim · model-written summary
Damaged plants accumulated more dry matter in leaves.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- leafe0
- Outcome
- dry mattere0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“damaged plants accumulated more dry matter in the leaf”
t0“Glasshouse Cucumbers”
Claim · model-written summary
Dry matter partitioning to fruits was hindered in damaged plants.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- fruitse0
- Outcome
- partitioning of dry matter to fruitse0
- Direction
- hinderede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“partitioning of dry matter to fruits was hindered”
t0“Glasshouse Cucumbers”
Claim · model-written summary
Economic yield significantly decreased by four weeks after heavy mite infestation.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- heavy mite infestationse0
- Outcome
- economic yielde0
- Direction
- decreasee0
- Qualifier
- as early as 4 wke0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The economic yield of cucumber began to significantly decrease as early as 4 wk after heavy mite infestations.”
Claim · model-written summary
Mite damage interactions differed seasonally among infestation levels.
- Taxon
- cucumberCucumis sativuse0
- Interactor
- T. urticaeTetranychus urticaee0pest
- Outcome
- seasonal differences in T. urticae-cucumber damage interactionse0
- Qualifier
- among mite infestation levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seasonal differences in T. urticae-cucumber damage interactions among mite infestation levels”
The same questions in other papers
Tetranychus urticae · growth · Cucumis sativus (cucumber)Results agree
1 paper in the same direction as this paper
- negative
Tetranychus urticae · yield · Cucumis sativus (cucumber)Results agree
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- positive
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See all 14 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.