Abstract
Grafted and ungrafted ‘Primo Red’ tomato ( Solanum lycopersicum ) transplants were planted at 16-, 20-, and 24-inch spacing in a commercial high tunnel in central New York, USA, to compare yields. ‘Primo Red’ scions were grafted onto ‘Maxifort’ rootstocks and left to heal in a commercial greenhouse facility. Tomatoes were harvested as they ripened, and the weight and number of fruit per plot was recorded and then calculated out to a per-plant basis. Wider plant spacings resulted in higher yields for both grafted and ungrafted plants. However, economic returns remained highest in the highest density (16 inches in-row) spacing with grafted plants. This indicates that growers may not need to adjust density despite additional foliage from grafted plants. Foliar incidence of Botrytis gray mold ( Botrytis cinerea ) was not significantly different under spacing or grafting treatments. Grafting resulted in higher yields across all plant spacings compared with ungrafted plants. Commercial growers can use this information to make choices on grafting and spacing in high tunnel tomato.
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Claims 5
Claim · model-written summary
Wider spacing increased yield for grafted and ungrafted tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Wider plant spacingse1
- Outcome
- yieldse1
- Direction
- highere1
- Comparator
- grafted and ungrafted plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Grafted and ungrafted ‘Primo Red’ tomato ( Solanum lycopersicum )”
e1“Wider plant spacings resulted in higher yields for both grafted and ungrafted plants.”
Claim · model-written summary
Economic returns were highest with grafting at 16-inch spacing.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- highest density (16 inches in-row) spacing with grafted plantse1
- Outcome
- economic returnse1
- Direction
- higheste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Grafted and ungrafted ‘Primo Red’ tomato ( Solanum lycopersicum )”
e1“economic returns remained highest in the highest density (16 inches in-row) spacing with grafted plants.”
Claim · model-written summary
Gray mold incidence did not differ significantly by spacing or grafting.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- spacing or grafting treatmentse1
- Interactor
- Botrytis cinerea
Botrytis cinereae1pathogen - Outcome
- Foliar incidence of Botrytis gray molde1
- Direction
- not significantly differente1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.


Verbatim
e0“Grafted and ungrafted ‘Primo Red’ tomato ( Solanum lycopersicum )”
e1“Foliar incidence of Botrytis gray mold ( Botrytis cinerea ) was not significantly different under spacing or grafting treatments.”
Claim · model-written summary
Grafting increased yield at every plant spacing relative to ungrafted plants.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Graftinge1
- Outcome
- yieldse1
- Direction
- highere1
- Comparator
- ungrafted plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Grafted and ungrafted ‘Primo Red’ tomato ( Solanum lycopersicum )”
e1“Grafting resulted in higher yields across all plant spacings compared with ungrafted plants.”
Claim · model-written summary
Growers may not need to change density for grafted tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Outcome
- may not need to adjust densitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Grafted and ungrafted ‘Primo Red’ tomato ( Solanum lycopersicum )”
e1“growers may not need to adjust density despite additional foliage from grafted plants.”
The same questions in other papers
grafting · yield · Solanum lycopersicum (tomato)Positive and negative results
150 papers in the same direction as this paper · 25 in the opposite direction
- negative
- positive
- positive
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See all 176 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.