Paper · 2022 · SABRAO Journal of Breeding and Genetics

RESPONSE OF TOMATO (LYCOPERSICON ESCULENTUM) TO NP ORGANIC FERTILIZER (RICH IN PHOSPHORUS) AND CALCIUM

A.S. AL-BAYATI; H.H. MAJEED

20
claims
35
verbatim quotes
2
citations
2
research areas
✓
Open access

Abstract

This current research proceeded during the growing season of 2021 at the Al-Nakhil Station, Al-Najaf Governorate, Iraq, to evaluate the response of hybrid tomato (Lycopersicon esculentum) ‘OULA F1’ to foliar application of organic fertilizers NP and calcium. The first factor included spraying phosphorous and nitrogen with three concentrations (0, 1, and 2 ml.L-1), while the second consisted of calcium spray with three different concentrations (0, 1.25, and 2.5 ml.L-1). The experiment was setup according to the randomized complete block design (RCBD) with three replications in a factorial arrangement. The results showed that the organic fertilizer rich in phosphorus at a concentration of 2 ml.L-1 significantly improved the traits, i.e., plant height (49.98 cm), leaf number (34.80 leaves.plant1), leaf area (3775.90 cm2.plant-1), shoot dry weight (156.70 g.plant-1), and leaf content of total chlorophyll (183.19 mg.l00g-1 FW) in comparison with the control treatment. Also, the same concentration of phosphorus revealed superiority in the percentage of N, P, K, and Ca in tomato leaves and fruit yield per plant (1.79%, 0.71%, 2.23%, 1.69%, and 2.89% kg.plant-1, respectively), compared with the control treatment. Moreover, the results further revealed that the organic calcium fertilizer at a concentration of 2.5 ml L-1 realized the highest averages for plant height, leaf number, leaf area, shoot dry weight, leaf N percent, leaf P percent, leaf K percent, and fruit yield per plant by 52.39 cm, 35.27 leaves.plant-1, 3850.20 cm2.plant-1, 175.73 g.plant-1, 1.74%, 0.70%, 2.17%, and 3.12 kg.plant-1, respectively. The foliar application of calcium at a concentration of 1.25 ml.L-1 provided the maximum total chlorophyll (175.03 mg.l00g-1 FW) and Ca (1.74%) in the leaves.

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Claims 20

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Phosphorus rich fertilizer increased tomato height to 49.98 cm versus control.

Treatment
organic fertilizer rich in phosphorus at a concentration of 2 ml.L-1e0
Outcome
plant heighte0
Direction
improvede0
Value
49.98 cme0
Comparator
the control treatmente0

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

“organic fertilizer rich in phosphorus at a concentration of 2 ml.L-1 significantly improved the traits, i.e., plant height (49.98 cm), leaf number (34.80 leaves.plant1), leaf area (3775.90 cm2.plant-1), shoot dry weight (156.70 g.plant-1), and leaf content of total chlorophyll (183.19 mg.l00g-1 FW) in comparison with the control treatment.”

✓ located verbatim in the source · abstract, characters 636–977 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Phosphorus rich fertilizer increased leaf number to 34.80 leaves per plant.

Treatment
organic fertilizer rich in phosphorus at a concentration of 2 ml.L-1e0
Outcome
leaf numbere0
Direction
improvede0
Value
34.80 leaves.plant1e0
Comparator
the control treatmente0

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

“organic fertilizer rich in phosphorus at a concentration of 2 ml.L-1 significantly improved the traits, i.e., plant height (49.98 cm), leaf number (34.80 leaves.plant1), leaf area (3775.90 cm2.plant-1), shoot dry weight (156.70 g.plant-1), and leaf content of total chlorophyll (183.19 mg.l00g-1 FW) in comparison with the control treatment.”

✓ located verbatim in the source · abstract, characters 636–977 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Phosphorus rich fertilizer increased leaf area to 3775.90 square centimeters per plant.

Treatment
organic fertilizer rich in phosphorus at a concentration of 2 ml.L-1e0
Outcome
leaf areae0
Direction
improvede0
Value
3775.90 cm2.plant-1e0
Comparator
the control treatmente0

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

“organic fertilizer rich in phosphorus at a concentration of 2 ml.L-1 significantly improved the traits, i.e., plant height (49.98 cm), leaf number (34.80 leaves.plant1), leaf area (3775.90 cm2.plant-1), shoot dry weight (156.70 g.plant-1), and leaf content of total chlorophyll (183.19 mg.l00g-1 FW) in comparison with the control treatment.”

✓ located verbatim in the source · abstract, characters 636–977 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Phosphorus rich fertilizer increased shoot dry weight to 156.70 grams per plant.

Treatment
organic fertilizer rich in phosphorus at a concentration of 2 ml.L-1e0
Outcome
shoot dry weighte0
Direction
improvede0
Value
156.70 g.plant-1e0
Comparator
the control treatmente0

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

“organic fertilizer rich in phosphorus at a concentration of 2 ml.L-1 significantly improved the traits, i.e., plant height (49.98 cm), leaf number (34.80 leaves.plant1), leaf area (3775.90 cm2.plant-1), shoot dry weight (156.70 g.plant-1), and leaf content of total chlorophyll (183.19 mg.l00g-1 FW) in comparison with the control treatment.”

✓ located verbatim in the source · abstract, characters 636–977 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Phosphorus rich fertilizer increased chlorophyll content to 183.19 mg per 100 g fresh weight.

Treatment
organic fertilizer rich in phosphorus at a concentration of 2 ml.L-1e0
Outcome
leaf content of total chlorophylle0
Direction
improvede0
Value
183.19 mg.l00g-1 FWe0
Comparator
the control treatmente0

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

“organic fertilizer rich in phosphorus at a concentration of 2 ml.L-1 significantly improved the traits, i.e., plant height (49.98 cm), leaf number (34.80 leaves.plant1), leaf area (3775.90 cm2.plant-1), shoot dry weight (156.70 g.plant-1), and leaf content of total chlorophyll (183.19 mg.l00g-1 FW) in comparison with the control treatment.”

✓ located verbatim in the source · abstract, characters 636–977 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Phosphorus rich fertilizer increased leaf nitrogen percentage to 1.79%.

Treatment
same concentration of phosphoruse0
Outcome
percentage of Ne0
Direction
superioritye0
Value
1.79%e0
Comparator
the control treatmente0

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 same concentration of phosphorus revealed superiority in the percentage of N, P, K, and Ca in tomato leaves and fruit yield per plant (1.79%, 0.71%, 2.23%, 1.69%, and 2.89% kg.plant-1, respectively), compared with the control treatment.”

✓ located verbatim in the source · abstract, characters 984–1224 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Phosphorus rich fertilizer increased leaf phosphorus percentage to 0.71%.

Treatment
same concentration of phosphoruse0
Outcome
Pe0
Direction
superioritye0
Value
0.71%e0
Comparator
the control treatmente0

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 same concentration of phosphorus revealed superiority in the percentage of N, P, K, and Ca in tomato leaves and fruit yield per plant (1.79%, 0.71%, 2.23%, 1.69%, and 2.89% kg.plant-1, respectively), compared with the control treatment.”

✓ located verbatim in the source · abstract, characters 984–1224 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Phosphorus rich fertilizer increased leaf potassium percentage to 2.23%.

Treatment
same concentration of phosphoruse0
Outcome
Ke0
Direction
superioritye0
Value
2.23%e0
Comparator
the control treatmente0

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 same concentration of phosphorus revealed superiority in the percentage of N, P, K, and Ca in tomato leaves and fruit yield per plant (1.79%, 0.71%, 2.23%, 1.69%, and 2.89% kg.plant-1, respectively), compared with the control treatment.”

✓ located verbatim in the source · abstract, characters 984–1224 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Phosphorus rich fertilizer increased leaf calcium percentage to 1.69%.

Treatment
same concentration of phosphoruse0
Outcome
Ca in tomato leavese0
Direction
superioritye0
Value
1.69%e0
Comparator
the control treatmente0

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 same concentration of phosphorus revealed superiority in the percentage of N, P, K, and Ca in tomato leaves and fruit yield per plant (1.79%, 0.71%, 2.23%, 1.69%, and 2.89% kg.plant-1, respectively), compared with the control treatment.”

✓ located verbatim in the source · abstract, characters 984–1224 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Phosphorus rich fertilizer increased fruit yield to 2.89 kg per plant.

Treatment
same concentration of phosphoruse0
Outcome
fruit yield per plante0
Direction
superioritye0
Value
2.89% kg.plant-1e0
Comparator
the control treatmente0

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 same concentration of phosphorus revealed superiority in the percentage of N, P, K, and Ca in tomato leaves and fruit yield per plant (1.79%, 0.71%, 2.23%, 1.69%, and 2.89% kg.plant-1, respectively), compared with the control treatment.”

✓ located verbatim in the source · abstract, characters 984–1224 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium fertilizer at 2.5 ml per liter had the highest tomato height, 52.39 cm.

Treatment
organic calcium fertilizer at a concentration of 2.5 ml L-1e0
Outcome
plant heighte0
Direction
higheste0
Value
52.39 cme0

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

“organic calcium fertilizer at a concentration of 2.5 ml L-1 realized the highest averages for plant height, leaf number, leaf area, shoot dry weight, leaf N percent, leaf P percent, leaf K percent, and fruit yield per plant by 52.39 cm, 35.27 leaves.plant-1, 3850.20 cm2.plant-1, 175.73 g.plant-1, 1.74%, 0.70%, 2.17%, and 3.12 kg.plant-1, respectively.”

✓ located verbatim in the source · abstract, characters 1273–1626 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium fertilizer had the highest leaf number, 35.27 per plant.

Treatment
organic calcium fertilizer at a concentration of 2.5 ml L-1e0
Outcome
leaf numbere0
Direction
higheste0
Value
35.27 leaves.plant-1e0

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

“organic calcium fertilizer at a concentration of 2.5 ml L-1 realized the highest averages for plant height, leaf number, leaf area, shoot dry weight, leaf N percent, leaf P percent, leaf K percent, and fruit yield per plant by 52.39 cm, 35.27 leaves.plant-1, 3850.20 cm2.plant-1, 175.73 g.plant-1, 1.74%, 0.70%, 2.17%, and 3.12 kg.plant-1, respectively.”

✓ located verbatim in the source · abstract, characters 1273–1626 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium fertilizer had the highest leaf area, 3850.20 square centimeters per plant.

Treatment
organic calcium fertilizer at a concentration of 2.5 ml L-1e0
Outcome
leaf areae0
Direction
higheste0
Value
3850.20 cm2.plant-1e0

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

“organic calcium fertilizer at a concentration of 2.5 ml L-1 realized the highest averages for plant height, leaf number, leaf area, shoot dry weight, leaf N percent, leaf P percent, leaf K percent, and fruit yield per plant by 52.39 cm, 35.27 leaves.plant-1, 3850.20 cm2.plant-1, 175.73 g.plant-1, 1.74%, 0.70%, 2.17%, and 3.12 kg.plant-1, respectively.”

✓ located verbatim in the source · abstract, characters 1273–1626 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium fertilizer had the highest shoot dry weight, 175.73 grams per plant.

Treatment
organic calcium fertilizer at a concentration of 2.5 ml L-1e0
Outcome
shoot dry weighte0
Direction
higheste0
Value
175.73 g.plant-1e0

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

“organic calcium fertilizer at a concentration of 2.5 ml L-1 realized the highest averages for plant height, leaf number, leaf area, shoot dry weight, leaf N percent, leaf P percent, leaf K percent, and fruit yield per plant by 52.39 cm, 35.27 leaves.plant-1, 3850.20 cm2.plant-1, 175.73 g.plant-1, 1.74%, 0.70%, 2.17%, and 3.12 kg.plant-1, respectively.”

✓ located verbatim in the source · abstract, characters 1273–1626 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium fertilizer had the highest leaf nitrogen percentage, 1.74%.

Treatment
organic calcium fertilizer at a concentration of 2.5 ml L-1e0
Outcome
leaf N percente0
Direction
higheste0
Value
1.74%e0

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

“organic calcium fertilizer at a concentration of 2.5 ml L-1 realized the highest averages for plant height, leaf number, leaf area, shoot dry weight, leaf N percent, leaf P percent, leaf K percent, and fruit yield per plant by 52.39 cm, 35.27 leaves.plant-1, 3850.20 cm2.plant-1, 175.73 g.plant-1, 1.74%, 0.70%, 2.17%, and 3.12 kg.plant-1, respectively.”

✓ located verbatim in the source · abstract, characters 1273–1626 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium fertilizer had the highest leaf phosphorus percentage, 0.70%.

Treatment
organic calcium fertilizer at a concentration of 2.5 ml L-1e0
Outcome
leaf P percente0
Direction
higheste0
Value
0.70%e0

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

“organic calcium fertilizer at a concentration of 2.5 ml L-1 realized the highest averages for plant height, leaf number, leaf area, shoot dry weight, leaf N percent, leaf P percent, leaf K percent, and fruit yield per plant by 52.39 cm, 35.27 leaves.plant-1, 3850.20 cm2.plant-1, 175.73 g.plant-1, 1.74%, 0.70%, 2.17%, and 3.12 kg.plant-1, respectively.”

✓ located verbatim in the source · abstract, characters 1273–1626 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium fertilizer had the highest leaf potassium percentage, 2.17%.

Treatment
organic calcium fertilizer at a concentration of 2.5 ml L-1e0
Outcome
leaf K percente0
Direction
higheste0
Value
2.17%e0

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

“organic calcium fertilizer at a concentration of 2.5 ml L-1 realized the highest averages for plant height, leaf number, leaf area, shoot dry weight, leaf N percent, leaf P percent, leaf K percent, and fruit yield per plant by 52.39 cm, 35.27 leaves.plant-1, 3850.20 cm2.plant-1, 175.73 g.plant-1, 1.74%, 0.70%, 2.17%, and 3.12 kg.plant-1, respectively.”

✓ located verbatim in the source · abstract, characters 1273–1626 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium fertilizer had the highest fruit yield, 3.12 kg per plant.

Treatment
organic calcium fertilizer at a concentration of 2.5 ml L-1e0
Outcome
fruit yield per plante0
Direction
higheste0
Value
3.12 kg.plant-1e0

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

“organic calcium fertilizer at a concentration of 2.5 ml L-1 realized the highest averages for plant height, leaf number, leaf area, shoot dry weight, leaf N percent, leaf P percent, leaf K percent, and fruit yield per plant by 52.39 cm, 35.27 leaves.plant-1, 3850.20 cm2.plant-1, 175.73 g.plant-1, 1.74%, 0.70%, 2.17%, and 3.12 kg.plant-1, respectively.”

✓ located verbatim in the source · abstract, characters 1273–1626 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium at 1.25 ml per liter maximized leaf chlorophyll at 175.03 mg per 100 g fresh weight.

Treatment
foliar application of calcium at a concentration of 1.25 ml.L-1e0
Outcome
total chlorophylle0
Direction
maximume0
Value
175.03 mg.l00g-1 FWe0

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 foliar application of calcium at a concentration of 1.25 ml.L-1 provided the maximum total chlorophyll (175.03 mg.l00g-1 FW) and Ca (1.74%) in the leaves.”

✓ located verbatim in the source · abstract, characters 1627–1785 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium at 1.25 ml per liter maximized leaf calcium at 1.74%.

Treatment
foliar application of calcium at a concentration of 1.25 ml.L-1e0
Outcome
Cae0
Direction
maximume0
Value
1.74%e0

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 foliar application of calcium at a concentration of 1.25 ml.L-1 provided the maximum total chlorophyll (175.03 mg.l00g-1 FW) and Ca (1.74%) in the leaves.”

✓ located verbatim in the source · abstract, characters 1627–1785 · show in text ↑
t0

“TOMATO”

✓ located verbatim in the source · title, characters 12–18 · show in text ↑

calcium atom · nutrient: content · Solanum lycopersicum (tomato)Results differ

53 papers: 43 positive, 10 negative or no effect

42 papers in the same direction as this paper · 10 in the opposite direction

  1. negative
  2. no effect
  3. no effect

49 papers more in this group

See all 53 papers →

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

60 papers: 54 positive, 6 negative or no effect

53 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. no effect
  3. no effect

56 papers more in this group

See all 60 papers →

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. positive
  2. positive
  3. negative

75 papers more in this group

See all 79 papers →

calcium atom · physiology: pigments · Solanum lycopersicum (tomato)Positive and negative results

16 papers: 13 positive, 3 negative or no effect

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

  1. no effect
  2. negative
  3. negative

12 papers more in this group

See all 16 papers →

phosphorus · yield · Solanum lycopersicum (tomato)Results differ

101 papers: 80 positive, 21 negative or no effect

79 papers in the same direction as this paper · 17 in the opposite direction · 4 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

97 papers more in this group

See all 101 papers →

phosphorus · physiology: pigments · Solanum lycopersicum (tomato)Positive and negative results

15 papers: 11 positive, 4 negative or no effect

10 papers in the same direction as this paper · 4 in the opposite direction

  1. no effect
  2. negative
  3. negative

11 papers more in this group

See all 15 papers →

phosphorus · nutrient: content · Solanum lycopersicum (tomato)Positive and negative results

38 papers: 26 positive, 12 negative or no effect

25 papers in the same direction as this paper · 12 in the opposite direction

  1. positive
  2. negative
  3. no effect

34 papers more in this group

See all 38 papers →

application · physiology: pigments · Solanum lycopersicum (tomato)Positive and negative results

61 papers: 55 positive, 6 negative or no effect

54 papers in the same direction as this paper · 6 in the opposite direction

  1. no effect
  2. negative
  3. negative

57 papers more in this group

See all 61 papers →

8 of 14 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.