Paper · 2020 · International Journal of Biology and Chemistry

Effects of blended polyvinyl alcohol/urea on the growth, yield and chemical content of tomato (Lycopersicon esculentum L. Mill)

Z. Zakaria; L. Bekbayeva; E.S. Negim

6
claims
9
verbatim quotes
0
citations
3
research areas
✓
Open access · cc-by-nc

Abstract

Tomato (Lycopersicon esculentum L. Mill) is one of the most important solanaceous vegetables widely cultivated in the world. The growth yield and chemical content of tomato (lycopersicon esculentum Mill) treatment with nitrogen fertilizers (PU) were investigated. Nitrogen fertilizers (PU) were based on polyvinyl alcohol (P) blended with three different contents of urea (U) (PU35, N: 8.45%; PU50, N: 34.1%, and PU65, 44.04%). In each of the five replicates of the treatments, 500 ml (1% w/v) of PU was applied directly to the soil. The first treatment was given at 15-day-old seedlings. Thereafter, the treatments were given at intervals of 15 days (6 times) each until 90 days. Final harvest was at 112 days. Data was analyzed using variance analysis (ANOVA) and compared using control without fertilizer. The vegetative growth, leaf and fruit chemical composition, and flowering and fruiting of tomato responded positively to PU fertilizer compared to control plants. However, application of PU50 (nitrogen content 34.1%) gave a significant increase in vegetative growth, chlorophylls a and b, flower and fruit characteristics more than PU35, PU65 and control

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. 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 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

PU fertilizer positively affected tomato vegetative growth.

Treatment
PU fertilizere0
Outcome
vegetative growthe0
Comparator
control plantse0

Not reportedDirection

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

“The vegetative growth, leaf and fruit chemical composition, and flowering and fruiting of tomato responded positively to PU fertilizer compared to control plants.”

✓ located verbatim in the source · abstract, characters 809–971 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

PU fertilizer positively affected tomato leaf and fruit chemical composition.

Treatment
PU fertilizere0
Outcome
leaf and fruit chemical compositione0
Comparator
control plantse0

Not reportedDirection

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

“The vegetative growth, leaf and fruit chemical composition, and flowering and fruiting of tomato responded positively to PU fertilizer compared to control plants.”

✓ located verbatim in the source · abstract, characters 809–971 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

PU fertilizer positively affected tomato flowering and fruiting.

Treatment
PU fertilizere0
Outcome
flowering and fruitinge0
Comparator
control plantse0

Not reportedDirection

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

“The vegetative growth, leaf and fruit chemical composition, and flowering and fruiting of tomato responded positively to PU fertilizer compared to control plants.”

✓ located verbatim in the source · abstract, characters 809–971 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PU50 significantly increased vegetative growth more than PU35, PU65 and control.

Treatment
PU50e0
Outcome
vegetative growthe0
Direction
increasee0
Comparator
PU35, PU65 and controle0

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

“application of PU50 (nitrogen content 34.1%) gave a significant increase in vegetative growth, chlorophylls a and b, flower and fruit characteristics more than PU35, PU65 and control”

✓ located verbatim in the source · abstract, characters 981–1163 · show in text ↑
e1

“chemical content of tomato (lycopersicon esculentum Mill)”

✓ located verbatim in the source · abstract, characters 146–203 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PU50 significantly increased chlorophylls a and b more than PU35, PU65 and control.

Treatment
PU50e0
Outcome
chlorophylls a and be0
Direction
increasee0
Comparator
PU35, PU65 and controle0

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

“application of PU50 (nitrogen content 34.1%) gave a significant increase in vegetative growth, chlorophylls a and b, flower and fruit characteristics more than PU35, PU65 and control”

✓ located verbatim in the source · abstract, characters 981–1163 · show in text ↑
e1

“chemical content of tomato (lycopersicon esculentum Mill)”

✓ located verbatim in the source · abstract, characters 146–203 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PU50 significantly increased flower and fruit characteristics more than PU35, PU65 and control.

Treatment
PU50e0
Outcome
flower and fruit characteristicse0
Direction
increasee0
Comparator
PU35, PU65 and controle0

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

“application of PU50 (nitrogen content 34.1%) gave a significant increase in vegetative growth, chlorophylls a and b, flower and fruit characteristics more than PU35, PU65 and control”

✓ located verbatim in the source · abstract, characters 981–1163 · show in text ↑
e1

“chemical content of tomato (lycopersicon esculentum Mill)”

✓ located verbatim in the source · abstract, characters 146–203 · show in text ↑

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

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

668 papers: 567 positive, 101 negative or no effect

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  1. positive
  2. no effect
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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.