Paper · 2025 · EURASIAN JOURNAL OF SOIL SCIENCE (EJSS)

Evaluation of foliar biostimulants and micronutrient complexes for improving tomato growth, yield, and fruit quality in Southeastern Kazakhstan

Temirzhan Aitbayev; Akbope Aitbayeva; Zhainagul Yertayeva; et al.

10
claims
24
verbatim quotes
1
citations
2
research areas
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Open access · cc-by-sa

Abstract

Tomato (Lycopersicon esculentum L.) is a vital horticultural crop in Kazakhstan, especially in the southern and southeastern regions, where yields often fall short of their biological potential. This study evaluated the effects of selected foliar-applied biostimulants and micronutrient formulations on vegetative growth, yield, fruit quality, and economic performance of tomato under the agroecological conditions of Southeastern Kazakhstan. The experimental design included seven treatments: six commercial products—Fitolaza, Nano Sulfur, Scudo, Calcium Humate, CompleMet-Tomato, and BioSok Energy—applied individually or in combination, alongside a non-treated control. All treatments improved vegetative parameters such as plant height, stem diameter, leaf number, and total biomass. The T3 treatment (Fitolaza + Nano Sulfur) consistently delivered superior performance across all growth stages and achieved the highest fruit yield (26.10 t/ha), representing a 31.49% increase over the control. T7 (CompleMet-Tomato) and T5 (Calcium Humate) also demonstrated notable yield improvements. Biochemical analyses revealed that these treatments enhanced dry matter, total sugar, and vitamin C content in fruits, while keeping nitrate levels below the permissible threshold. Economic evaluation identified T3 as the most profitable treatment (USD 1,932.99/ha), followed by T7 and T5, with profitability rates exceeding 140%. These results highlight the potential of foliar biostimulant strategies to enhance both productivity and profitability in tomato cultivation, offering a viable path toward more sustainable and resource-efficient horticultural practices.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-sa. 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 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All foliar treatments improved tomato height, stem diameter and leaf number.

Treatment
All treatmentse0
Outcome
plant height, stem diameter, leaf numbere0
Direction
improvede0
Comparator
non-treated controle1

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

“All treatments improved vegetative parameters such as plant height, stem diameter, leaf number, and total biomass”

✓ located verbatim in the source · abstract, characters 673–786 · show in text ↑
e1

“non-treated control”

✓ located verbatim in the source · abstract, characters 652–671 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 77–83 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All foliar treatments improved tomato biomass.

Treatment
All treatmentse0
Outcome
total biomasse0
Direction
improvede0
Comparator
non-treated controle1

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

“All treatments improved vegetative parameters such as plant height, stem diameter, leaf number, and total biomass”

✓ located verbatim in the source · abstract, characters 673–786 · show in text ↑
e1

“non-treated control”

✓ located verbatim in the source · abstract, characters 652–671 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 77–83 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

T3 delivered superior growth performance across all stages.

Treatment
T3 treatment (Fitolaza + Nano Sulfur)e0
Outcome
superior performancee0
Direction
superiore0
Qualifier
all growth stagese0

Not reportedComparator

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 T3 treatment (Fitolaza + Nano Sulfur) consistently delivered superior performance across all growth stages”

✓ located verbatim in the source · abstract, characters 788–898 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 77–83 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

T3 produced highest tomato fruit yield of 26.10 t/ha, 31.49% above control.

Treatment
T3 treatment (Fitolaza + Nano Sulfur)e1
Outcome
fruit yielde0
Direction
higheste0
Value
26.10 t/hae0
Qualifier
31.49% increasee0
Comparator
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

“achieved the highest fruit yield (26.10 t/ha), representing a 31.49% increase over the control”

✓ located verbatim in the source · abstract, characters 903–997 · show in text ↑
e1

“T3 treatment (Fitolaza + Nano Sulfur)”

✓ located verbatim in the source · abstract, characters 792–829 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 77–83 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

T7 improved tomato yield.

Treatment
T7 (CompleMet-Tomato)e0
Outcome
yield improvementse0
Direction
improvementse0

Not reportedComparator

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

“T7 (CompleMet-Tomato) and T5 (Calcium Humate) also demonstrated notable yield improvements”

✓ located verbatim in the source · abstract, characters 999–1089 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 77–83 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

T5 improved tomato yield.

Treatment
T5 (Calcium Humate)e0
Outcome
yield improvementse0
Direction
improvementse0

Not reportedComparator

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

“T7 (CompleMet-Tomato) and T5 (Calcium Humate) also demonstrated notable yield improvements”

✓ located verbatim in the source · abstract, characters 999–1089 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 77–83 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The treatments increased fruit dry matter, sugar and vitamin C.

Treatment
these treatmentse0
Outcome
dry matter, total sugar, and vitamin C content in fruitse0
Direction
enhancede0

Not reportedComparator

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

“these treatments enhanced dry matter, total sugar, and vitamin C content in fruits”

✓ located verbatim in the source · abstract, characters 1126–1208 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 77–83 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The treatments kept fruit nitrate levels below the permissible threshold.

Treatment
these treatmentse1
Outcome
nitrate levelse0
Direction
belowe0
Comparator
permissible thresholde0

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

“while keeping nitrate levels below the permissible threshold”

✓ located verbatim in the source · abstract, characters 1210–1270 · show in text ↑
e1

“these treatments enhanced dry matter”

✓ located verbatim in the source · abstract, characters 1126–1162 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 77–83 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

T3 was the most profitable treatment at USD 1,932.99/ha.

Treatment
T3e0
Outcome
most profitable treatmente0
Value
USD 1,932.99/hae0

Not reportedMaterial

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

“T3 as the most profitable treatment (USD 1,932.99/ha)”

✓ located verbatim in the source · abstract, characters 1303–1356 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 77–83 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

T7 and T5 followed T3 in profitability, with rates exceeding 140%.

Outcome
profitability ratese0
Value
140%e0
Qualifier
T7 and T5e0

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

“followed by T7 and T5, with profitability rates exceeding 140%”

✓ located verbatim in the source · abstract, characters 1358–1420 · show in text ↑
t0

“tomato”

✓ located verbatim in the source · title, characters 77–83 · show in text ↑

calcium atom · yield · Solanum lycopersicum (tomato)Results differ

79 papers: 67 positive, 12 negative or no effect

66 papers in the same direction as this paper · 11 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

75 papers more in this group

See all 79 papers →

sulfur atom · yield · Solanum lycopersicum (tomato)Positive and negative results

9 papers: 6 positive, 3 negative or no effect

5 papers in the same direction as this paper · 3 in the opposite direction

  1. no effect
  2. negative
  3. no effect

5 papers more in this group

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

56 papers: 54 positive, 2 negative or no effect

53 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. positive

52 papers more in this group

See all 56 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.