Abstract
Greenhouse tomato production is shifting to meet emerging consumer needs. Increasing environmental concerns have pressured growers to supply high-quality vegetables using sustainable production methods. The utilization of adapting fertigation to production conditions and/or nutrient solutions of moderately high conductivity seems promising in providing high yields of superior quality while limiting the emission of nutrients to the environment in greenhouse tomato crops. A tomato crop was grown in soilless culture with various levels of electrical conductivity (EC), 2.2, 3.5, and 4.5 dS·m −1 , adjusting the final nutrient concentration and maintaining nutritional balance. The effect of nutrient solutions with moderately high EC on fertigation parameters and the emission of nutrients to the environment, total crop productivity, distribution of fruit sizes, and dietary and organoleptic qualities were measured. Nutrient solutions of moderately high EC decreased total and commercial yield, with an average reduction from 5% to 19% and 3% to 22%, respectively. A considerable decrease in extra large and large fruits, with an average reduction from 69% to 42%, was also observed. Nonetheless, dietary-related metabolites were significantly increased at the highest EC values: lycopene (6.3%), ascorbic acid (8.8%), total phenolics content (8.3%), and total antioxidant activity (11.1%). EC values of 3.5 and 4.5 dS·m −1 are not widely used in commercial production but are frequently measured in drainage solutions in open hydroponic systems and discarded solutions in closed systems, mainly because of the use of poor-quality water and the accumulation of excess nutrients.
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Claims 7
Claim · model-written summary
Moderately high nutrient-solution conductivity decreased total tomato yield by 5% to 19%.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Nutrient solutions of moderately high ECe0
- Outcome
- totale0
- Direction
- decreasede0
- Value
- 5% to 19%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nutrient solutions of moderately high EC decreased total and commercial yield, with an average reduction from 5% to 19% and 3% to 22%, respectively”
t0“Tomato”
Claim · model-written summary
Moderately high conductivity decreased commercial tomato yield by 3% to 22%.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Nutrient solutions of moderately high ECe0
- Outcome
- commercial yielde0
- Direction
- decreasede0
- Value
- 3% to 22%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nutrient solutions of moderately high EC decreased total and commercial yield, with an average reduction from 5% to 19% and 3% to 22%, respectively”
t0“Tomato”
Claim · model-written summary
The share of extra-large and large tomato fruit decreased from 69% to 42%.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- extra large and large fruitse0
- Direction
- decreasee0
- Value
- 69% to 42%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A considerable decrease in extra large and large fruits, with an average reduction from 69% to 42%, was also observed”
t0“Tomato”
Claim · model-written summary
Lycopene increased by 6.3% at the highest conductivity values.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- highest EC valuese0
- Outcome
- lycopenee0
- Direction
- increasede0
- Value
- 6.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dietary-related metabolites were significantly increased at the highest EC values: lycopene (6.3%), ascorbic acid (8.8%), total phenolics content (8.3%), and total antioxidant activity (11.1%)”
t0“Tomato”
Claim · model-written summary
Ascorbic acid increased by 8.8% at the highest conductivity values.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- highest EC valuese0
- Outcome
- ascorbic acide0
- Direction
- increasede0
- Value
- 8.8%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dietary-related metabolites were significantly increased at the highest EC values: lycopene (6.3%), ascorbic acid (8.8%), total phenolics content (8.3%), and total antioxidant activity (11.1%)”
t0“Tomato”
Claim · model-written summary
Total phenolics increased by 8.3% at the highest conductivity values.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- highest EC valuese0
- Outcome
- total phenolics contente0
- Direction
- increasede0
- Value
- 8.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dietary-related metabolites were significantly increased at the highest EC values: lycopene (6.3%), ascorbic acid (8.8%), total phenolics content (8.3%), and total antioxidant activity (11.1%)”
t0“Tomato”
Claim · model-written summary
Total antioxidant activity increased by 11.1% at the highest conductivity values.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- highest EC valuese0
- Outcome
- total antioxidant activitye0
- Direction
- increasede0
- Value
- 11.1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dietary-related metabolites were significantly increased at the highest EC values: lycopene (6.3%), ascorbic acid (8.8%), total phenolics content (8.3%), and total antioxidant activity (11.1%)”
t0“Tomato”
The same questions in other papers
fertilization · yield · Solanum lycopersicum (tomato)Positive and negative results
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