Paper · 1996 · Journal of the American Society for Horticultural Science

Growth, Productivity, and Mineral Composition of Hydroponically Cultivated Greenhouse Tomatoes, with or without Nutrient Solution Recycling

H. Zekki; L. Gauthier; A. Gosselin

7
claims
14
verbatim quotes
110
citations
2
research areas
✓
Open access

Abstract

Tomato plants ( Lycopersicon esculentum Mill. cv. Capello) were grown in the three most promising and used hydroponic cultivation systems using rockwool and peatmoss substrates and nutrient film technique (NFT), either with or without recovery and recycling of the drainage solutions. Prolonged recycling of nutrient solutions in NFT caused a reduction in fresh weight, dry weight, and yield compared to plants grown in NFT with regular renewal of the nutrient solution. There were no differences in growth, productivity, and leaf mineral composition between plants grown in rockwool and peatmoss systems, with or without recycling, and in the NFT system without recycling. These results suggest that recycling drainage solutions is an economically and environmentally sound horticultural practice that when used correctly does not cause a reduction in yield of tomatoes cultivated in rockwool or peatmoss. However, prolonged use of the same solution in the NFT cultivation system can negatively affect growth and yield. This is most likely due to an accumulation of sulfate ions in the fertigation solutions.

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Claims 7

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Prolonged NFT solution recycling reduced tomato fresh and dry weight and yield versus regular renewal.

Treatment
Prolonged recycling of nutrient solutions in NFTe0
Outcome
fresh weight, dry weight, and yielde0
Direction
reductione0
Comparator
plants grown in NFT with regular renewal of the nutrient solutione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Prolonged recycling of nutrient solutions in NFT caused a reduction in fresh weight, dry weight, and yield compared to plants grown in NFT with regular renewal of the nutrient solution”

✓ located verbatim in the source · abstract, characters 285–469 · show in text ↑
t0

“Tomatoes”

✓ located verbatim in the source · title, characters 86–94 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Growth did not differ between rockwool, peatmoss and unrecycled NFT systems.

Outcome
growthe0
Direction
no differencese0
Comparator
NFT system without recyclinge0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“There were no differences in growth, productivity, and leaf mineral composition between plants grown in rockwool and peatmoss systems, with or without recycling, and in the NFT system without recycling”

✓ located verbatim in the source · abstract, characters 471–672 · show in text ↑
t0

“Tomatoes”

✓ located verbatim in the source · title, characters 86–94 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Productivity did not differ between rockwool, peatmoss and unrecycled NFT systems.

Outcome
productivitye0
Direction
no differencese0
Comparator
NFT system without recyclinge0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“There were no differences in growth, productivity, and leaf mineral composition between plants grown in rockwool and peatmoss systems, with or without recycling, and in the NFT system without recycling”

✓ located verbatim in the source · abstract, characters 471–672 · show in text ↑
t0

“Tomatoes”

✓ located verbatim in the source · title, characters 86–94 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Leaf mineral composition did not differ between rockwool, peatmoss and unrecycled NFT systems.

Outcome
leaf mineral compositione0
Direction
no differencese0
Comparator
NFT system without recyclinge0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“There were no differences in growth, productivity, and leaf mineral composition between plants grown in rockwool and peatmoss systems, with or without recycling, and in the NFT system without recycling”

✓ located verbatim in the source · abstract, characters 471–672 · show in text ↑
t0

“Tomatoes”

✓ located verbatim in the source · title, characters 86–94 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Authors recommend drainage recycling in rockwool or peatmoss tomato cultivation.

Outcome
recycling drainage solutionse0
Qualifier
when used correctlye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“recycling drainage solutions is an economically and environmentally sound horticultural practice that when used correctly does not cause a reduction in yield of tomatoes cultivated in rockwool or peatmoss”

✓ located verbatim in the source · abstract, characters 701–905 · show in text ↑
Recommendationauthor interpretationoriginal resultnegativebasis n/a

Claim · model-written summary

Authors conclude prolonged NFT solution use can reduce tomato growth and yield.

Outcome
prolonged use of the same solution in the NFT cultivation systeme0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“prolonged use of the same solution in the NFT cultivation system can negatively affect growth and yield”

✓ located verbatim in the source · abstract, characters 916–1019 · show in text ↑
t0

“Tomatoes”

✓ located verbatim in the source · title, characters 86–94 · show in text ↑
Mechanismhypothesisoriginal resultnegativemeasured

Claim · model-written summary

Authors attribute the NFT reduction to sulfate ion accumulation in fertigation solution.

Compound
sulfate ionse0
Outcome
growth and yielde1
Qualifier
most likelye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“This is most likely due to an accumulation of sulfate ions in the fertigation solutions”

✓ located verbatim in the source · abstract, characters 1021–1108 · show in text ↑
e1

“prolonged use of the same solution in the NFT cultivation system can negatively affect growth and yield”

✓ located verbatim in the source · abstract, characters 916–1019 · show in text ↑
t0

“Tomatoes”

✓ located verbatim in the source · title, characters 86–94 · show in text ↑

fertilization · yield · Solanum lycopersicum (tomato)Positive and negative results

978 papers: 850 positive, 128 negative or no effect

127 papers in the same direction as this paper · 850 in the opposite direction

  1. negative
  2. positive
  3. positive

974 papers more in this group

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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.