Paper · 2023 · IOP Conference Series Earth and Environmental Science

The Role of Iron Nanoparticles and Humic Acid in Iron Concentration, Growth and Yield of Broccoli (Brassica Oleracea var Italic)

Khaleel J. Farhan; L. E. Mahdi; M. N. A. Al-Falahi; et al.

17
claims
34
verbatim quotes
8
citations
2
research areas
✓
Open access · cc-by

Abstract

Abstract A field experiment was carried out in one of the private farms in Fallujah district, west of Baghdad for the autumn season 2020/2021 in a sandy mixture soil to study the effect of adding humic acid and nano iron on iron availability, growth and yield of broccoli plant to show the effect of the method of adding humic acid at three levels of 0, 50 and 100 kg. h -1 and its interaction with the addition of source and iron level at levels without addition (0 mg L -1 , 50 mg L -1 nano iron and 100 mg L -1 metallic iron in some growth and production traits of broccoli plant using a complete randomized block design for a factorial experiment with three replicates and the results were analyzed Statistically at the 0.05 probability level to test for the least significant difference, the results of the study showed that the addition of humic acid caused significant increases compared to the control treatment in the studied traits, the highest average in the traits (number of leaves, leaf area, total plant yield, root weight, root length, iron concentration In leaves) it was 17.89 leaf -1 , 362.5 cm 2 plant -1 , 19.81 Mg h -1 , 81.0 g, 45.1 cm, 16.65 mg kg -1 , respectively. The treatments of iron spray formulas and concentrations also significantly affected by increasing most of the above characteristics and the superiority of spraying nano iron at a concentration of 50 mg L -1 ) in (plant height, number of leaves, leaf area, total plant yield, root weight, root length, iron concentration in leaves) reached 40.56 cm, 19.22 leaf. plant -1 , 426.4 cm 2 plant -1 , 26.06 mg/kg H -1 , 80.76 gm, 46.0 cm 2 , 19.12 mg kg -1 , sequentially. The effect of the interaction between the two factors of the study was significant, and the combination of adding humic acid combined with spraying nano iron at a concentration of 50 mg L -1 ) excelled in the traits (number of leaves, leaf area, iron concentration in leaves, total plant yield) which amounted to .20.31 leaf. plant -1 , 503.4 cm 2 plant -1 , 20.79 mg kg -1 , 29.83 mg h -1 , sequentially.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 17

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Humic acid increased broccoli leaf number to 17.89 leaf -1.

Treatment
addition of humic acide0
Outcome
number of leavese0
Direction
increasese0
Value
17.89 leaf -1e0
Comparator
control treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the addition of humic acid caused significant increases compared to the control treatment in the studied traits, the highest average in the traits (number of leaves, leaf area, total plant yield, root weight, root length, iron concentration In leaves) it was 17.89 leaf -1 , 362.5 cm 2 plant -1 , 19.81 Mg h -1 , 81.0 g, 45.1 cm, 16.65 mg kg -1 , respectively”

✓ located verbatim in the source · abstract, characters 830–1189 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Humic acid increased broccoli leaf area to 362.5 cm 2 plant -1.

Treatment
addition of humic acide0
Outcome
leaf areae0
Direction
increasese0
Value
362.5 cm 2 plant -1e0
Comparator
control treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the addition of humic acid caused significant increases compared to the control treatment in the studied traits, the highest average in the traits (number of leaves, leaf area, total plant yield, root weight, root length, iron concentration In leaves) it was 17.89 leaf -1 , 362.5 cm 2 plant -1 , 19.81 Mg h -1 , 81.0 g, 45.1 cm, 16.65 mg kg -1 , respectively”

✓ located verbatim in the source · abstract, characters 830–1189 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Humic acid increased total plant yield to 19.81 Mg h -1.

Treatment
addition of humic acide0
Outcome
total plant yielde0
Direction
increasese0
Value
19.81 Mg h -1e0
Comparator
control treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the addition of humic acid caused significant increases compared to the control treatment in the studied traits, the highest average in the traits (number of leaves, leaf area, total plant yield, root weight, root length, iron concentration In leaves) it was 17.89 leaf -1 , 362.5 cm 2 plant -1 , 19.81 Mg h -1 , 81.0 g, 45.1 cm, 16.65 mg kg -1 , respectively”

✓ located verbatim in the source · abstract, characters 830–1189 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Humic acid increased root weight to 81.0 g.

Treatment
addition of humic acide0
Outcome
root weighte0
Direction
increasese0
Value
81.0 ge0
Comparator
control treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the addition of humic acid caused significant increases compared to the control treatment in the studied traits, the highest average in the traits (number of leaves, leaf area, total plant yield, root weight, root length, iron concentration In leaves) it was 17.89 leaf -1 , 362.5 cm 2 plant -1 , 19.81 Mg h -1 , 81.0 g, 45.1 cm, 16.65 mg kg -1 , respectively”

✓ located verbatim in the source · abstract, characters 830–1189 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Humic acid increased root length to 45.1 cm.

Treatment
addition of humic acide0
Outcome
root lengthe0
Direction
increasese0
Value
45.1 cme0
Comparator
control treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the addition of humic acid caused significant increases compared to the control treatment in the studied traits, the highest average in the traits (number of leaves, leaf area, total plant yield, root weight, root length, iron concentration In leaves) it was 17.89 leaf -1 , 362.5 cm 2 plant -1 , 19.81 Mg h -1 , 81.0 g, 45.1 cm, 16.65 mg kg -1 , respectively”

✓ located verbatim in the source · abstract, characters 830–1189 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Humic acid increased leaf iron concentration to 16.65 mg kg -1.

Treatment
addition of humic acide0
Outcome
iron concentration In leavese0
Direction
increasese0
Value
16.65 mg kg -1e0
Comparator
control treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the addition of humic acid caused significant increases compared to the control treatment in the studied traits, the highest average in the traits (number of leaves, leaf area, total plant yield, root weight, root length, iron concentration In leaves) it was 17.89 leaf -1 , 362.5 cm 2 plant -1 , 19.81 Mg h -1 , 81.0 g, 45.1 cm, 16.65 mg kg -1 , respectively”

✓ located verbatim in the source · abstract, characters 830–1189 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nano iron spray increased plant height to 40.56 cm.

Treatment
spraying nano iron at a concentration of 50 mg L -1e0
Outcome
plant heighte0
Direction
increasinge0
Value
40.56 cme0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The treatments of iron spray formulas and concentrations also significantly affected by increasing most of the above characteristics and the superiority of spraying nano iron at a concentration of 50 mg L -1 ) in (plant height, number of leaves, leaf area, total plant yield, root weight, root length, iron concentration in leaves) reached 40.56 cm, 19.22 leaf. plant -1 , 426.4 cm 2 plant -1 , 26.06 mg/kg H -1 , 80.76 gm, 46.0 cm 2 , 19.12 mg kg -1”

✓ located verbatim in the source · abstract, characters 1191–1641 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nano iron spray increased number of leaves to 19.22 leaf. plant -1.

Treatment
spraying nano iron at a concentration of 50 mg L -1e0
Outcome
number of leavese0
Direction
increasinge0
Value
19.22 leaf. plant -1e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The treatments of iron spray formulas and concentrations also significantly affected by increasing most of the above characteristics and the superiority of spraying nano iron at a concentration of 50 mg L -1 ) in (plant height, number of leaves, leaf area, total plant yield, root weight, root length, iron concentration in leaves) reached 40.56 cm, 19.22 leaf. plant -1 , 426.4 cm 2 plant -1 , 26.06 mg/kg H -1 , 80.76 gm, 46.0 cm 2 , 19.12 mg kg -1”

✓ located verbatim in the source · abstract, characters 1191–1641 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nano iron spray increased leaf area to 426.4 cm 2 plant -1.

Treatment
spraying nano iron at a concentration of 50 mg L -1e0
Outcome
leaf areae0
Direction
increasinge0
Value
426.4 cm 2 plant -1e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The treatments of iron spray formulas and concentrations also significantly affected by increasing most of the above characteristics and the superiority of spraying nano iron at a concentration of 50 mg L -1 ) in (plant height, number of leaves, leaf area, total plant yield, root weight, root length, iron concentration in leaves) reached 40.56 cm, 19.22 leaf. plant -1 , 426.4 cm 2 plant -1 , 26.06 mg/kg H -1 , 80.76 gm, 46.0 cm 2 , 19.12 mg kg -1”

✓ located verbatim in the source · abstract, characters 1191–1641 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nano iron spray increased total plant yield to 26.06 mg/kg H -1.

Treatment
spraying nano iron at a concentration of 50 mg L -1e0
Outcome
total plant yielde0
Direction
increasinge0
Value
26.06 mg/kg H -1e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The treatments of iron spray formulas and concentrations also significantly affected by increasing most of the above characteristics and the superiority of spraying nano iron at a concentration of 50 mg L -1 ) in (plant height, number of leaves, leaf area, total plant yield, root weight, root length, iron concentration in leaves) reached 40.56 cm, 19.22 leaf. plant -1 , 426.4 cm 2 plant -1 , 26.06 mg/kg H -1 , 80.76 gm, 46.0 cm 2 , 19.12 mg kg -1”

✓ located verbatim in the source · abstract, characters 1191–1641 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nano iron spray increased root weight to 80.76 gm.

Treatment
spraying nano iron at a concentration of 50 mg L -1e0
Outcome
root weighte0
Direction
increasinge0
Value
80.76 gme0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The treatments of iron spray formulas and concentrations also significantly affected by increasing most of the above characteristics and the superiority of spraying nano iron at a concentration of 50 mg L -1 ) in (plant height, number of leaves, leaf area, total plant yield, root weight, root length, iron concentration in leaves) reached 40.56 cm, 19.22 leaf. plant -1 , 426.4 cm 2 plant -1 , 26.06 mg/kg H -1 , 80.76 gm, 46.0 cm 2 , 19.12 mg kg -1”

✓ located verbatim in the source · abstract, characters 1191–1641 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nano iron spray increased root length to 46.0 cm 2.

Treatment
spraying nano iron at a concentration of 50 mg L -1e0
Outcome
root lengthe0
Direction
increasinge0
Value
46.0 cm 2e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The treatments of iron spray formulas and concentrations also significantly affected by increasing most of the above characteristics and the superiority of spraying nano iron at a concentration of 50 mg L -1 ) in (plant height, number of leaves, leaf area, total plant yield, root weight, root length, iron concentration in leaves) reached 40.56 cm, 19.22 leaf. plant -1 , 426.4 cm 2 plant -1 , 26.06 mg/kg H -1 , 80.76 gm, 46.0 cm 2 , 19.12 mg kg -1”

✓ located verbatim in the source · abstract, characters 1191–1641 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nano iron spray increased iron concentration in leaves to 19.12 mg kg -1.

Treatment
spraying nano iron at a concentration of 50 mg L -1e0
Outcome
iron concentration in leavese0
Direction
increasinge0
Value
19.12 mg kg -1e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The treatments of iron spray formulas and concentrations also significantly affected by increasing most of the above characteristics and the superiority of spraying nano iron at a concentration of 50 mg L -1 ) in (plant height, number of leaves, leaf area, total plant yield, root weight, root length, iron concentration in leaves) reached 40.56 cm, 19.22 leaf. plant -1 , 426.4 cm 2 plant -1 , 26.06 mg/kg H -1 , 80.76 gm, 46.0 cm 2 , 19.12 mg kg -1”

✓ located verbatim in the source · abstract, characters 1191–1641 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Combined humic acid and nano iron produced number of leaves of 20.31 leaf. plant -1.

Treatment
adding humic acid combined with spraying nano iron at a concentration of 50 mg L -1e0
Outcome
number of leavese0
Direction
excellede0
Value
20.31 leaf. plant -1e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the combination of adding humic acid combined with spraying nano iron at a concentration of 50 mg L -1 ) excelled in the traits (number of leaves, leaf area, iron concentration in leaves, total plant yield) which amounted to .20.31 leaf. plant -1 , 503.4 cm 2 plant -1 , 20.79 mg kg -1 , 29.83 mg h -1”

✓ located verbatim in the source · abstract, characters 1746–2047 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Combined humic acid and nano iron produced leaf area of 503.4 cm 2 plant -1.

Treatment
adding humic acid combined with spraying nano iron at a concentration of 50 mg L -1e0
Outcome
leaf areae0
Direction
excellede0
Value
503.4 cm 2 plant -1e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the combination of adding humic acid combined with spraying nano iron at a concentration of 50 mg L -1 ) excelled in the traits (number of leaves, leaf area, iron concentration in leaves, total plant yield) which amounted to .20.31 leaf. plant -1 , 503.4 cm 2 plant -1 , 20.79 mg kg -1 , 29.83 mg h -1”

✓ located verbatim in the source · abstract, characters 1746–2047 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Combined humic acid and nano iron produced iron concentration in leaves of 20.79 mg kg -1.

Treatment
adding humic acid combined with spraying nano iron at a concentration of 50 mg L -1e0
Outcome
iron concentration in leavese0
Direction
excellede0
Value
20.79 mg kg -1e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the combination of adding humic acid combined with spraying nano iron at a concentration of 50 mg L -1 ) excelled in the traits (number of leaves, leaf area, iron concentration in leaves, total plant yield) which amounted to .20.31 leaf. plant -1 , 503.4 cm 2 plant -1 , 20.79 mg kg -1 , 29.83 mg h -1”

✓ located verbatim in the source · abstract, characters 1746–2047 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Combined humic acid and nano iron produced total plant yield of 29.83 mg h -1.

Treatment
adding humic acid combined with spraying nano iron at a concentration of 50 mg L -1e0
Outcome
total plant yielde0
Direction
excellede0
Value
29.83 mg h -1e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Brassica oleracea var. italica
Brassica oleracea var. italica · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the combination of adding humic acid combined with spraying nano iron at a concentration of 50 mg L -1 ) excelled in the traits (number of leaves, leaf area, iron concentration in leaves, total plant yield) which amounted to .20.31 leaf. plant -1 , 503.4 cm 2 plant -1 , 20.79 mg kg -1 , 29.83 mg h -1”

✓ located verbatim in the source · abstract, characters 1746–2047 · show in text ↑
t0

“Broccoli (Brassica Oleracea var Italic)”

✓ located verbatim in the source · title, characters 89–128 · show in text ↑

iron atom · nutrient: content · Brassica oleracea (wild cabbage)Results differ

7 papers: 6 positive, 1 negative or no effect

5 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

3 papers more in this group

See all 7 papers →

iron atom · yield · Brassica oleracea (wild cabbage)Results agree

8 papers: 8 positive, 0 negative or no effect

7 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

iron atom · growth · Brassica oleracea (wild cabbage)Results agree

9 papers: 9 positive, 0 negative or no effect

8 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

other · yield · Brassica oleracea (wild cabbage)Results differ

37 papers: 33 positive, 4 negative or no effect

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

  1. positive
  2. no effect
  3. no effect

33 papers more in this group

See all 37 papers →

nanoparticle · yield · Brassica oleracea (wild cabbage)Positive and negative results

17 papers: 16 positive, 1 negative or no effect

15 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. no effect
  3. positive

13 papers more in this group

See all 17 papers →

application · nutrient: content · Brassica oleracea (wild cabbage)Positive and negative results

38 papers: 36 positive, 2 negative or no effect

35 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. negative
  3. positive

34 papers more in this group

See all 38 papers →

application · growth · Brassica oleracea (wild cabbage)Positive and negative results

79 papers: 74 positive, 5 negative or no effect

73 papers in the same direction as this paper · 4 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

75 papers more in this group

See all 79 papers →

application · yield · Brassica oleracea (wild cabbage)Positive and negative results

110 papers: 104 positive, 6 negative or no effect

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

  1. no effect
  2. no effect
  3. negative

106 papers more in this group

See all 110 papers →

8 of 12 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.