Paper · 1985 · South African Journal of Plant and Soil

Effect of simulated acid rain and sulphur nutrition on the growth, sulphate and cation content of Bromus diandrus Roth.

G. M. Phillips; L. M. Raitt; J. Aalbers

7
claims
7
verbatim quotes
0
citations
1
research areas
—
Not open access

Abstract

Bromus diandrus seedlings were grown in sand culture under greenhouse conditions, using a two factor randomized block design. Two levels of sulphur nutrition (with and without) and three acid rain treatments were applied. The plants were harvested 45 days after the start of the simulated acid rain treatments, and analysed for sulphate and cations. Sulphur deficiency significantly reduced the growth of the plants but simulated acid rain did not. Sulphur deficient plants had significantly more magnesium in the shoots and less in the roots, suggesting redistribution of the magnesium. Root potassium content was significantly higher in sulphur deficient plants, and lower in those plants receiving acid rain of pH 2,5. The results suggest that acid rain is not a stress factor where Bromus diandrus is concerned. S. Afr. J. Plant Soil 1985, 2: 98–100

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Claims 7

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Sulphur deficiency significantly reduced growth.

Taxon
plantsViridiplantaee0
Treatment
Sulphur deficiencye0
Outcome
growthe0
Direction
reducede0

Not reportedComparator

Verbatim

e0

“Sulphur deficiency significantly reduced the growth of the plants but simulated acid rain did not.”

✓ located verbatim in the source · abstract, characters 350–448 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Simulated acid rain did not significantly reduce growth.

Taxon
plantsViridiplantaee0
Treatment
simulated acid raine0
Outcome
growthe0

Not reportedComparatorDirection

Verbatim

e0

“Sulphur deficiency significantly reduced the growth of the plants but simulated acid rain did not.”

✓ located verbatim in the source · abstract, characters 350–448 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Sulphur deficient plants had more shoot magnesium.

Taxon
plantsViridiplantaee0
Treatment
Sulphur deficiente0
Outcome
magnesium in the shootse0
Direction
moree0

Not reportedComparator

Verbatim

e0

“Sulphur deficient plants had significantly more magnesium in the shoots and less in the roots, suggesting redistribution of the magnesium.”

✓ located verbatim in the source · abstract, characters 449–587 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Sulphur deficient plants had less root magnesium.

Taxon
plantsViridiplantaee0
Treatment
Sulphur deficiente0
Outcome
rootse0
Direction
lesse0

Not reportedComparator

Verbatim

e0

“Sulphur deficient plants had significantly more magnesium in the shoots and less in the roots, suggesting redistribution of the magnesium.”

✓ located verbatim in the source · abstract, characters 449–587 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Sulphur deficient plants had higher root potassium.

Taxon
plantsViridiplantaee0
Treatment
sulphur deficiente0
Outcome
Root potassium contente0
Direction
highere0

Not reportedComparator

Verbatim

e0

“Root potassium content was significantly higher in sulphur deficient plants, and lower in those plants receiving acid rain of pH 2,5.”

✓ located verbatim in the source · abstract, characters 588–721 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Acid rain at pH 2,5 lowered root potassium.

Taxon
plantsViridiplantaee0
Treatment
acid rain of pH 2,5e0
Outcome
Root potassium contente0
Direction
lowere0

Not reportedComparator

Verbatim

e0

“Root potassium content was significantly higher in sulphur deficient plants, and lower in those plants receiving acid rain of pH 2,5.”

✓ located verbatim in the source · abstract, characters 588–721 · show in text ↑
Recommendationauthor interpretationoriginal resultno effectbasis n/a

Claim · model-written summary

Authors suggest acid rain is not a stress factor for Bromus diandrus.

Taxon
Bromus diandrusBromus diandruse0
Outcome
acid rain is not a stress factore0

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

Bromus diandrus
Bromus diandrus · TaxonHarry Rose from South West Rocks, Australia · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The results suggest that acid rain is not a stress factor where Bromus diandrus is concerned.”

✓ located verbatim in the source · abstract, characters 722–815 · show in text ↑

sulfur atom · growth · Viridiplantae (plants)Positive and negative results

4 papers: 2 positive, 2 negative or no effect

1 paper in the same direction as this paper · 2 in the opposite direction

This paper is about lacking the nutrient, so it counts the other way round here.

  1. no effect
  2. negative
  3. positive
See all 4 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.