Paper · 1982 · Journal of Soil Science

Modification of soil physical properties by addition of Fe (III) polycations: influence on plant growth

R. T. SHANMUGANATHAN; J. M. OADES

8
claims
14
verbatim quotes
1
citations
2
research areas
—
Not open access

Abstract

Summary The addition of 0.07 per cent Fe or more in the form of polycations decreased the total area of cracks and increased the number of transmissive pores of soils after simulated rainfall and drying. This resulted in increased per cent emergence and lower mean day of emergence of wheat plants. Per cent emergence (.v) was negatively correlated with penetrometer resistance (x). The increased germination was followed by greater plant growth, including increased plant height and yield. The Fe polycation treatments had no significant effect on root length measured at harvest.

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Claims 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Fe polycations reduced soil cracking after simulated rainfall and drying.

Taxon
wheat plantsTriticum aestivume1
Treatment
0.07 per cent Fe or more in the form of polycationse0
Outcome
total area of crackse0
Direction
decreasede0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The addition of 0.07 per cent Fe or more in the form of polycations decreased the total area of cracks and increased the number of transmissive pores of soils after simulated rainfall and drying”

✓ located verbatim in the source · abstract, characters 8–202 · show in text ↑
e1

“wheat plants”

✓ located verbatim in the source · abstract, characters 285–297 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Fe polycations increased transmissive soil pores after simulated rainfall and drying.

Taxon
wheat plantsTriticum aestivume1
Treatment
0.07 per cent Fe or more in the form of polycationse0
Outcome
number of transmissive porese0
Direction
increasede0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The addition of 0.07 per cent Fe or more in the form of polycations decreased the total area of cracks and increased the number of transmissive pores of soils after simulated rainfall and drying”

✓ located verbatim in the source · abstract, characters 8–202 · show in text ↑
e1

“wheat plants”

✓ located verbatim in the source · abstract, characters 285–297 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Wheat emergence percentage increased after soil structure changed.

Taxon
wheat plantsTriticum aestivume0
Outcome
per cent emergencee0
Direction
increasede0

Not reportedTreatmentComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“This resulted in increased per cent emergence and lower mean day of emergence of wheat plants”

✓ located verbatim in the source · abstract, characters 204–297 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Wheat mean day of emergence decreased.

Taxon
wheat plantsTriticum aestivume0
Outcome
mean day of emergencee0
Direction
lowere0

Not reportedTreatmentComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“This resulted in increased per cent emergence and lower mean day of emergence of wheat plants”

✓ located verbatim in the source · abstract, characters 204–297 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Wheat emergence percentage was negatively correlated with penetrometer resistance.

Taxon
wheat plantsTriticum aestivume1
Outcome
Per cent emergencee0
Direction
negatively correlatede0
Comparator
penetrometer resistancee0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Per cent emergence (.v) was negatively correlated with penetrometer resistance (x).”

✓ located verbatim in the source · abstract, characters 299–382 · show in text ↑
e1

“wheat plants”

✓ located verbatim in the source · abstract, characters 285–297 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Wheat plant height rose following increased germination.

Taxon
wheat plantsTriticum aestivume1
Outcome
plant heighte0
Direction
increasede0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The increased germination was followed by greater plant growth, including increased plant height and yield.”

✓ located verbatim in the source · abstract, characters 383–490 · show in text ↑
e1

“wheat plants”

✓ located verbatim in the source · abstract, characters 285–297 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Wheat yield rose following increased germination.

Taxon
wheat plantsTriticum aestivume1
Outcome
yielde0
Direction
increasede0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The increased germination was followed by greater plant growth, including increased plant height and yield.”

✓ located verbatim in the source · abstract, characters 383–490 · show in text ↑
e1

“wheat plants”

✓ located verbatim in the source · abstract, characters 285–297 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Fe polycation treatments did not significantly change wheat root length at harvest.

Taxon
wheat plantsTriticum aestivume1
Treatment
Fe polycation treatmentse0
Outcome
root lengthe0
Direction
no significant effecte0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The Fe polycation treatments had no significant effect on root length measured at harvest.”

✓ located verbatim in the source · abstract, characters 491–581 · show in text ↑
e1

“wheat plants”

✓ located verbatim in the source · abstract, characters 285–297 · show in text ↑

iron atom · growth · Triticum aestivum (wheat)Results differ

54 papers: 41 positive, 13 negative or no effect

12 papers in the same direction as this paper · 41 in the opposite direction

  1. positive
  2. positive
  3. positive

50 papers more in this group

See all 54 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.