Abstract
Damage by southern green stink bug (SGSB), Nezara viridula (L.), to fresh market tomatoes, Lycopersicum esculentum Mill., was studied during 1983 and 1984. The effect of tomato fruit size and SGSB density and feeding duration on tomato circumference, weight, and days to maturity, as well as SGSB feeding frequency as indicated by the deposition of stylet sheaths, was quantified. Density and feeding duration had a significant effect on all four damage indices. Feeding frequency was influenced by density and feeding duration in a complex, nonadditive manner, but was not affected by fruit size. Most of the other relationships between infestation levels and the growth of tomatoes were linear, indicating that tomatoes would sustain a significant linear reduction in growth with incremental increases in SGSB density and feeding duration. The interactive effect of density and feeding duration was nonsignificant across all fruit damage indices. Feeding damage induced an early maturity of fruit and thereby reduced fruit size and weight.
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Claims 8
Claim · model-written summary
Stink bug density and feeding duration significantly affected four fruit damage indices.
- Taxon
- tomatoes
Solanum lycopersicumt0 - Treatment
- Density and feeding duratione0
- Outcome
- all four damage indicese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Density and feeding duration had a significant effect on all four damage indices.”
t0“Tomatoes”
Claim · model-written summary
Feeding frequency responded nonadditively to density and duration.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- density and feeding duratione0
- Outcome
- Feeding frequencye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Feeding frequency was influenced by density and feeding duration in a complex, nonadditive manner”
t0“Tomatoes”
Claim · model-written summary
Fruit size did not affect stink bug feeding frequency.
- Taxon
- tomatoesSolanum lycopersicumt0
- Organ / stage
- fruit sizee0
- Outcome
- Feeding frequencye0
- Direction
- not affectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Feeding frequency was influenced by density and feeding duration in a complex, nonadditive manner, but was not affected by fruit size.”
t0“Tomatoes”
Claim · model-written summary
Most infestation-growth relationships were linear.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- infestation levelse0
- Outcome
- growth of tomatoese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most of the other relationships between infestation levels and the growth of tomatoes were linear”
Claim · model-written summary
Tomato growth declined linearly with rising bug density and feeding duration.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- incremental increases in SGSB density and feeding duratione0
- Outcome
- growthe0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tomatoes would sustain a significant linear reduction in growth with incremental increases in SGSB density and feeding duration.”
Claim · model-written summary
Density-by-duration interaction was nonsignificant for fruit damage indices.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- density and feeding duratione0
- Outcome
- fruit damage indicese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interactive effect of density and feeding duration was nonsignificant across all fruit damage indices.”
t0“Tomatoes”
Claim · model-written summary
Feeding damage advanced tomato fruit maturity.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- Feeding damagee0
- Outcome
- maturity of fruite0
- Direction
- earlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Feeding damage induced an early maturity of fruit”
t0“Tomatoes”
Claim · model-written summary
Feeding damage reduced tomato fruit size and weight.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- Feeding damagee0
- Outcome
- fruit size and weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Feeding damage induced an early maturity of fruit and thereby reduced fruit size and weight.”
t0“Tomatoes”
The same questions in other papers
infection · yield · Solanum lycopersicum (tomato)Positive and negative results
16 papers in the same direction as this paper · 12 in the opposite direction
- positive
- positive
- positive
25 papers more in this group
See all 29 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.