Abstract
Tomato seedlings were grown in substrate culture with pots. The formulation of Holland Greenhouse Horticulture Research Institute was used(as CK) and the effects of different Ca concentrations(LCa, CK and HCa)on growth, yield, and fruit quality(protein, Vitamin C, nitrates, organic acid and soluble sugar) of tomato were studied keeping concentrations of other nutrients unchanged in the nutrient solution. The results showed that parameters related to the growth of tomato(plant height and Stem diameter), changes of tomato yield per plant and quality of tomato fruits were the highest when the plants were grown at 20% Ca treatments. In the second study, increased EC concentrations of nutrient solution resulted in stronger plants with improved yields and quality. Four different concentration gradients of nutrient solution treatment were designed based on the results of the first research stage(EC=1.5, 2.5, 3.5, 4.5 m S/cm, respectively). The single tomato plant had the highest production which is 2 268.994 g/plant, when the nutrient solution strength was at EC=1.5 m S cm, whereas they have the best fruit quality when the solution strength at EC 4.5 m S/cm. This suggests the need for wide popularization of the nutrient solution formula in large areas to improve the tomato production.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Growth parameters were highest at 20% Ca.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- 20% Ca treatmentse0
- Outcome
- plant height and Stem diametere0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“parameters related to the growth of tomato(plant height and Stem diameter), changes of tomato yield per plant and quality of tomato fruits were the highest when the plants were grown at 20% Ca treatments.”
Claim · model-written summary
Tomato yield per plant was highest at 20% Ca.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- 20% Ca treatmentse0
- Outcome
- tomato yield per plante0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“changes of tomato yield per plant and quality of tomato fruits were the highest when the plants were grown at 20% Ca treatments.”
Claim · model-written summary
Tomato fruit quality was highest at 20% Ca.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- 20% Ca treatmentse0
- Outcome
- quality of tomato fruitse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“quality of tomato fruits were the highest when the plants were grown at 20% Ca treatments.”
Claim · model-written summary
Increased nutrient solution EC made plants stronger.
- Treatment
- increased EC concentrations of nutrient solutione0
- Outcome
- stronger plantse0
- Direction
- strongere0
Not reportedTaxonComparator
Verbatim
e0“increased EC concentrations of nutrient solution resulted in stronger plants with improved yields and quality.”
Claim · model-written summary
Increased nutrient solution EC improved yield and quality.
- Treatment
- increased EC concentrations of nutrient solutione0
- Outcome
- yields and qualitye0
- Direction
- improvede0
Not reportedTaxonComparator
Verbatim
e0“increased EC concentrations of nutrient solution resulted in stronger plants with improved yields and quality.”
Claim · model-written summary
Production was highest at EC=1.5 m S cm, at 2 268.994 g/plant.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- EC=1.5 m S cme0
- Outcome
- productione0
- Direction
- higheste0
- Value
- 2 268.994 g/plante0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The single tomato plant had the highest production which is 2 268.994 g/plant, when the nutrient solution strength was at EC=1.5 m S cm”
Claim · model-written summary
Fruit quality was best at EC 4.5 m S/cm.
Not reportedTaxonComparator
Verbatim
e0“they have the best fruit quality when the solution strength at EC 4.5 m S/cm.”
Claim · model-written summary
Authors recommend wide use of the nutrient solution formula to improve tomato production.
- Taxon
- tomato
Solanum lycopersicume0 - Outcome
- popularization of the nutrient solution formulae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“wide popularization of the nutrient solution formula in large areas to improve the tomato production.”
The same questions in other papers
calcium atom · growth · Solanum lycopersicum (tomato)Results differ
53 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- no effect
56 papers more in this group
See all 60 papers →calcium atom · yield · Solanum lycopersicum (tomato)Results differ
66 papers in the same direction as this paper · 11 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- negative
75 papers more in this group
See all 79 papers →calcium atom · quality: general · Solanum lycopersicum (tomato)Positive and negative results
12 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
10 papers more in this group
See all 14 papers →fertilization · quality: general · Solanum lycopersicum (tomato)Positive and negative results
93 papers in the same direction as this paper · 18 in the opposite direction · 4 reporting no difference from an alternative
- negative
- no effect
- negative
112 papers more in this group
See all 116 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.