Paper · 1986 · Communications in Soil Science and Plant Analysis

Evaluation of soil pH manipulation on crop production in northern idaho

R. L. Mahler

8
claims
8
verbatim quotes
10
citations
3
research areas
—
Not open access

Abstract

Abstract Heavy applications of ammonium‐based N fertilizers on cereal crops have resulted in rapid acidification of once neutral soils in northern Idaho. Lime and elemental S applications were used to manipulate soil pH and evaluate consequent effects on the growth of lentils (Lens culinarius) and winter wheat (Triticum aestivum L.). Lime applications of 2,200 and 4,400 kg/ha resulted in 22 to 23% and 10 to 28% yield increases of lentils and winter wheat, respectively. Elemental S application rates of 2,200 and 4,400 kg/ha reduced: (1) soil pH in the surface 30 cm of the soil profile, (2) lentil and winter wheat yields, (3) populations of Rhizobium leguminosarum in the soil, and (4) N mineralization rates. Soil pH should be maintained at or above 5.6 for lentils and 5.2 for winter wheat production.

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Claims 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Lime increased lentil yield by 22 to 23%.

Taxon
lentilsLens culinarise0
Treatment
Lime applications of 2,200 and 4,400 kg/hae0
Outcome
yielde0
Direction
increasese0
Value
22 to 23%e0

Not reportedComparator

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

Lens culinaris
Lens culinaris · TaxonUser:Justinc · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“Lime applications of 2,200 and 4,400 kg/ha resulted in 22 to 23% and 10 to 28% yield increases of lentils and winter wheat, respectively”

✓ located verbatim in the source · abstract, characters 336–472 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Lime increased winter wheat yield by 10 to 28%.

Taxon
winter wheatTriticum aestivume0
Treatment
Lime applications of 2,200 and 4,400 kg/hae0
Outcome
yielde0
Direction
increasese0
Value
10 to 28%e0

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

“Lime applications of 2,200 and 4,400 kg/ha resulted in 22 to 23% and 10 to 28% yield increases of lentils and winter wheat, respectively”

✓ located verbatim in the source · abstract, characters 336–472 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Sulfur reduced lentil and wheat yields.

Taxon
lentil and winter wheatLens culinarisTriticum aestivume0
Treatment
Elemental S application rates of 2,200 and 4,400 kg/hae0
Outcome
lentil and winter wheat yieldse0
Direction
reducede0

Not reportedComparator

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

Lens culinaris
Lens culinaris · TaxonUser:Justinc · CC BY-SA 2.5 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Elemental S application rates of 2,200 and 4,400 kg/ha reduced: (1) soil pH in the surface 30 cm of the soil profile, (2) lentil and winter wheat yields”

✓ located verbatim in the source · abstract, characters 474–626 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Sulfur reduced surface soil pH.

Treatment
Elemental S application rates of 2,200 and 4,400 kg/hae0
Outcome
soil pH in the surface 30 cm of the soil profilee0
Direction
reducede0

Not reportedTaxonComparator

Verbatim

e0

“Elemental S application rates of 2,200 and 4,400 kg/ha reduced: (1) soil pH in the surface 30 cm of the soil profile”

✓ located verbatim in the source · abstract, characters 474–590 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Sulfur reduced soil Rhizobium populations.

Taxon
lentilLens culinarise0
Treatment
Elemental S application rates of 2,200 and 4,400 kg/hae0
Interactor
Rhizobium leguminosarumRhizobium leguminosarume0symbiont
Outcome
populations of Rhizobium leguminosarum in the soile0
Direction
reducede0

Not reportedComparator

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

Lens culinaris
Lens culinaris · TaxonUser:Justinc · CC BY-SA 2.5 · Wikimedia Commons ↗
Rhizobium leguminosarum
Rhizobium leguminosarum · Interactor · picture from its Wikimedia Commons categoryQaswarah 21 · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Elemental S application rates of 2,200 and 4,400 kg/ha reduced: (1) soil pH in the surface 30 cm of the soil profile, (2) lentil and winter wheat yields, (3) populations of Rhizobium leguminosarum in the soil”

✓ located verbatim in the source · abstract, characters 474–682 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Sulfur reduced nitrogen mineralization rates.

Treatment
Elemental S application rates of 2,200 and 4,400 kg/hae0
Outcome
N mineralization ratese0
Direction
reducede0

Not reportedTaxonComparator

Verbatim

e0

“Elemental S application rates of 2,200 and 4,400 kg/ha reduced: (1) soil pH in the surface 30 cm of the soil profile, (2) lentil and winter wheat yields, (3) populations of Rhizobium leguminosarum in the soil, and (4) N mineralization rates”

✓ located verbatim in the source · abstract, characters 474–714 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend maintaining soil pH at or above 5.6 for lentils.

Taxon
lentilsLens culinarise0
Outcome
Soil pH should be maintained at or above 5.6e0

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

Lens culinaris
Lens culinaris · TaxonUser:Justinc · CC BY-SA 2.5 · Wikimedia Commons ↗

Verbatim

e0

“Soil pH should be maintained at or above 5.6 for lentils and 5.2 for winter wheat production”

✓ located verbatim in the source · abstract, characters 716–808 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend maintaining soil pH at or above 5.2 for winter wheat.

Taxon
winter wheatTriticum aestivume0
Outcome
5.2 for winter wheat productione0

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

“Soil pH should be maintained at or above 5.6 for lentils and 5.2 for winter wheat production”

✓ located verbatim in the source · abstract, characters 716–808 · show in text ↑

sulfur atom · yield · Lens culinaris (lentil)Results differ

23 papers: 22 positive, 1 negative or no effect

22 in the opposite direction

  1. positive
  2. positive
  3. positive

19 papers more in this group

See all 23 papers →

sulfur atom · yield · Triticum aestivum (wheat)Results differ

148 papers: 124 positive, 24 negative or no effect

23 papers in the same direction as this paper · 124 in the opposite direction

  1. positive
  2. positive
  3. positive

144 papers more in this group

See all 148 papers →

lime · yield · Lens culinaris (lentil)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

lime · yield · Triticum aestivum (wheat)Positive and negative results

173 papers: 140 positive, 33 negative or no effect

139 papers in the same direction as this paper · 31 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

169 papers more in this group

See all 173 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.