Abstract
Abstract A multiple regression analysis of yields of ‘6718 VF’ tomato ( Lycopersicon esculentum Mill.) from 11 field plots along an ambient ozone gradient in southern California indicated that ozone was responsible for a significant reduction in fruit size. Ozone dose accounted for 85% of the reduction in fruit size and was at least 3.3 times more important than any of the monitored meteorological variables in predicting the percentage of marketable fruit. High ambient ozone depressed production and caused a significant decrease in fruit size over time. A model describing the reduction in marketing container yield (% reduction = 0 + (.0232 x dose)) predicted a 50% reduction at a dose of 2000 pphm-hours > 10 pphm.
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Claims 6
Claim · model-written summary
Ozone was responsible for a significant reduction in tomato fruit size.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- ozonee0
- Outcome
- fruit sizee0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Reduction of Tomato Fruit Size and Yield by Ozone1”
e0“ozone was responsible for a significant reduction in fruit size”
Claim · model-written summary
Ozone dose accounted for 85% of the reduction in tomato fruit size.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Ozone dosee1
- Outcome
- reduction in fruit sizee1
- Value
- 85%e1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Reduction of Tomato Fruit Size and Yield by Ozone1”
e1“Ozone dose accounted for 85% of the reduction in fruit size and was at least 3.3 times more important than any of the monitored meteorological variables in predicting the percentage of marketable fruit”
Claim · model-written summary
Ozone dose was at least 3.3 times more important than the monitored meteorological variables in predicting percentage of marketable tomato fruit.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Ozone dosee1
- Outcome
- percentage of marketable fruite1
- Direction
- more importante1
- Value
- 3.3 timese1
- Comparator
- any of the monitored meteorological variablese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Reduction of Tomato Fruit Size and Yield by Ozone1”
e1“Ozone dose accounted for 85% of the reduction in fruit size and was at least 3.3 times more important than any of the monitored meteorological variables in predicting the percentage of marketable fruit”
Claim · model-written summary
High ambient ozone depressed tomato production.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- High ambient ozonee2
- Outcome
- productione2
- Direction
- depressede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Reduction of Tomato Fruit Size and Yield by Ozone1”
e2“High ambient ozone depressed production and caused a significant decrease in fruit size over time”
Claim · model-written summary
High ambient ozone caused a significant decrease in tomato fruit size over time.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- High ambient ozonee2
- Outcome
- fruit sizee2
- Direction
- decreasee2
- Qualifier
- over timee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Reduction of Tomato Fruit Size and Yield by Ozone1”
e2“High ambient ozone depressed production and caused a significant decrease in fruit size over time”
Claim · model-written summary
A model predicted a 50% reduction in marketing container yield at an ozone dose of 2000 pphm-hours above 10 pphm.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- a dose of 2000 pphm-hours > 10 pphme3
- Outcome
- reduction in marketing container yielde3
- Value
- 50%e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Reduction of Tomato Fruit Size and Yield by Ozone1”
e3“A model describing the reduction in marketing container yield (% reduction = 0 + (.0232 x dose)) predicted a 50% reduction at a dose of 2000 pphm-hours > 10 pphm”
The same questions in other papers
ozone · yield · Solanum lycopersicum (tomato)Results differ
5 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
4 papers more in this group
See all 8 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.