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.
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Claims 17
Claim · model-written summary
Humic acid increased broccoli leaf number to 17.89 leaf -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Humic acid increased broccoli leaf area to 362.5 cm 2 plant -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Humic acid increased total plant yield to 19.81 Mg h -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Humic acid increased root weight to 81.0 g.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Humic acid increased root length to 45.1 cm.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Humic acid increased leaf iron concentration to 16.65 mg kg -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Nano iron spray increased plant height to 40.56 cm.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Nano iron spray increased number of leaves to 19.22 leaf. plant -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Nano iron spray increased leaf area to 426.4 cm 2 plant -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Nano iron spray increased total plant yield to 26.06 mg/kg H -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Nano iron spray increased root weight to 80.76 gm.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Nano iron spray increased root length to 46.0 cm 2.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Nano iron spray increased iron concentration in leaves to 19.12 mg kg -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Combined humic acid and nano iron produced number of leaves of 20.31 leaf. plant -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Combined humic acid and nano iron produced leaf area of 503.4 cm 2 plant -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Combined humic acid and nano iron produced iron concentration in leaves of 20.79 mg kg -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
Claim · model-written summary
Combined humic acid and nano iron produced total plant yield of 29.83 mg h -1.
- Taxon
- Broccoli
Brassica oleracea var. italicat0 - 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.

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”
t0“Broccoli (Brassica Oleracea var Italic)”
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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.