Abstract
SummaryIn a first experiment, six levels of leaf removal were imposed on January-sown tomatoes and de-leafing was continued so that the length of stem with leaves attached was constant for a given treatment. Flower opening on de-leafed plants was delayed but only significantly so in the most severe treatment. There was no effect on stem elongation. Yield decreased with severity of leaf removal but the rate of fruit ripening was enhanced. In a second experiment, three levels of de-leafing were used but treatment was delayed until the fruits began to ripen. The treatments were combined factorially with three planting densities and three contrasting cultivars. There were no effects of de-leafing on flower opening or stem elongation. Total yield was reduced by leaf removal in the most severe treatment but there was no effect on fruit numbers or quality. Large and significant effects of plant density were recorded but there were no interactions between density, leaf removal and cultivar. The effects of de-leafing and density were similar in all three cultivars. Crop yield was thus affected by both the severity of leaf removal and by the stage of plant development at which removal occurred. Losses in yield are attributed to a reduction in photosynthetic area and a decrease in the availability of mobile mineral elements which are present in the leaves. It is strongly recommended that de-leafing in commercial tomato crops should not exceed the level of ripening fruits.
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Claims 13
Claim · model-written summary
Flower opening on de-leafed plants was delayed, but only significantly so in the most severe leaf removal treatment, in the first experiment
- Taxon
- tomatoes
Solanum lycopersicumt0 - Treatment
- most severe treatmente2
- Outcome
- Flower openinge2
- Direction
- delayede2
- Setting
- glasshouset0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e2“Flower opening on de-leafed plants was delayed but only significantly so in the most severe treatment”
Claim · model-written summary
Leaf removal had no effect on stem elongation in the first experiment
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- leaf removale1
- Outcome
- stem elongatione3
- Direction
- no effecte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e1“six levels of leaf removal were imposed on January-sown tomatoes”
e3“There was no effect on stem elongation”
Claim · model-written summary
Yield decreased with increasing severity of leaf removal
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- severity of leaf removale4
- Outcome
- Yielde4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e4“Yield decreased with severity of leaf removal but the rate of fruit ripening was enhanced”
Claim · model-written summary
The rate of fruit ripening was enhanced with increasing severity of leaf removal
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- severity of leaf removale4
- Outcome
- rate of fruit ripeninge4
- Direction
- enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e4“Yield decreased with severity of leaf removal but the rate of fruit ripening was enhanced”
Claim · model-written summary
In the second experiment, de-leafing had no effect on flower opening or stem elongation
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- de-leafinge5
- Outcome
- flower opening or stem elongatione5
- Direction
- no effectse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e5“There were no effects of de-leafing on flower opening or stem elongation”
Claim · model-written summary
The most severe leaf removal reduced total yield
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- leaf removale6
- Outcome
- Total yielde6
- Direction
- reducede6
- Qualifier
- most severe treatmente6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e6“Total yield was reduced by leaf removal in the most severe treatment but there was no effect on fruit numbers or quality”
Claim · model-written summary
Leaf removal had no effect on fruit numbers or quality
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- leaf removale6
- Outcome
- fruit numbers or qualitye6
- Direction
- no effecte6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e6“Total yield was reduced by leaf removal in the most severe treatment but there was no effect on fruit numbers or quality”
Claim · model-written summary
Plant density had large and significant effects on the tomato crop
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- plant densitye0
- Outcome
- effectse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e0“Large and significant effects of plant density were recorded but there were no interactions between density, leaf removal and cultivar”
Claim · model-written summary
No interactions between planting density, leaf removal and cultivar were found
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- density, leaf removal and cultivare0
- Outcome
- interactionse0
- Direction
- no interactionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e0“Large and significant effects of plant density were recorded but there were no interactions between density, leaf removal and cultivar”
Claim · model-written summary
The effects of de-leafing and density were similar across all three cultivars
- Taxon
- tomatoesSolanum lycopersicumt0
- Material
- all three cultivarse7
- Treatment
- de-leafing and densitye7
- Outcome
- effects of de-leafing and densitye7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e7“The effects of de-leafing and density were similar in all three cultivars”
Claim · model-written summary
Crop yield was affected by both the severity of leaf removal and the stage of plant development at which removal occurred
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- severity of leaf removale1
- Outcome
- Crop yielde1
- Qualifier
- stage of plant development at which removal occurrede1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e1“Crop yield was thus affected by both the severity of leaf removal and by the stage of plant development at which removal occurred”
Claim · model-written summary
The losses in yield are attributed to a reduced photosynthetic area and a decreased availability of mobile mineral elements in the leaves
- Taxon
- tomatoesSolanum lycopersicumt0
- Outcome
- Losses in yielde2
- Qualifier
- a reduction in photosynthetic area and a decrease in the availability of mobile mineral elementse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“glasshouse tomatoes”
e2“Losses in yield are attributed to a reduction in photosynthetic area and a decrease in the availability of mobile mineral elements which are present in the leaves”
Claim · model-written summary
De-leafing in commercial tomato crops should not exceed the level of ripening fruits
- Taxon
- tomatoSolanum lycopersicume3
- Outcome
- de-leafinge3
- Qualifier
- should not exceed the level of ripening fruitse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“It is strongly recommended that de-leafing in commercial tomato crops should not exceed the level of ripening fruits”
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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.