Abstract
The effect of aluminium (Al) toxicity of either surface or subsurface soil on the growth of barley, and the potential for variation in response to soil acidity among agronomically adapted Australian barley genotypes, were examined at 13 sites. The effect of Al toxicity was investigated by plant analysis, using 3-5 lime application rates and Al-tolerant species (wheat, triticale), as well as barley. All cereals were supplied with complete nutrients. To measure the potential for response variation, grain yields of 14 genotypes of barley, relative to cv. Stirling, were related to soil pH at 7 sites. Grain yield of barley was increased 9-30% at 6 sites, by lime application alleviating A1 toxicity. The yield of triticale and wheat cv. Aroona was not increased by lime application at any site. There was some indication that subsurface acidity may be reducing the grain yield of barley at sites with CaCl2-extractable Al concentrations of 23-4 mg/g in the A2 horizon. Some barley genotypes appeared to be more tolerant than Stirling to soil acidity. Aluminium toxicity appears to be reducing barley grain yields by more than 10% at surface soil pH <4.5 (0.01 mol CaCl2/L), or when CaCl2-extractable Al is >3-4 mg/g. CaCl2-extractable A1 in the surface soil was not a better indicator of Al toxicity than soil pH.
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Claims 7
Claim · model-written summary
Lime application increased barley grain yield by 9-30% at six sites by alleviating aluminium toxicity.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- lime applicatione0
- Outcome
- Grain yielde0
- Direction
- increasede0
- Value
- 9-30%e0
- Qualifier
- alleviating A1 toxicitye0
- Setting
- 6 sitese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Grain yield of barley was increased 9-30% at 6 sites, by lime application alleviating A1 toxicity”
Claim · model-written summary
Triticale grain yield was not increased by lime application at any site.
- Taxon
- triticale
×Triticosecalee1 - Treatment
- lime applicatione1
- Outcome
- yielde1
- Direction
- not increasede1
- Setting
- any sitee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The yield of triticale and wheat cv. Aroona was not increased by lime application at any site”
Claim · model-written summary
Wheat cv. Aroona grain yield was not increased by lime application at any site.
- Taxon
- wheat
Triticum aestivume1 - Material
- cv. Aroonae1
- Treatment
- lime applicatione1
- Outcome
- yielde1
- Direction
- not increasede1
- Setting
- any sitee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The yield of triticale and wheat cv. Aroona was not increased by lime application at any site”
Claim · model-written summary
Some barley genotypes appeared more tolerant to soil acidity than cv. Stirling.
- Taxon
- barleyHordeum vulgaree2
- Material
- barley genotypese2
- Outcome
- soil aciditye2
- Direction
- more tolerante2
- Comparator
- Stirlinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Some barley genotypes appeared to be more tolerant than Stirling to soil acidity”
Claim · model-written summary
Subsurface acidity may be reducing barley grain yield where CaCl2-extractable Al is high in the A2 horizon.
- Taxon
- barleyHordeum vulgaree3
- Treatment
- subsurface aciditye3
- Outcome
- grain yielde3
- Direction
- reducinge3
- Qualifier
- CaCl2-extractable Al concentrations of 23-4 mg/g in the A2 horizone3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“There was some indication that subsurface acidity may be reducing the grain yield of barley at sites with CaCl2-extractable Al concentrations of 23-4 mg/g in the A2 horizon”
Claim · model-written summary
Aluminium toxicity appears to reduce barley grain yield by more than 10% at surface soil pH below 4.5 or when CaCl2-extractable Al exceeds 3-4 mg/g.
- Taxon
- barleyHordeum vulgaree4
- Treatment
- Aluminium toxicitye4
- Outcome
- barley grain yieldse4
- Direction
- reducinge4
- Value
- more than 10%e4
- Qualifier
- at surface soil pH <4.5 (0.01 mol CaCl2/L), or when CaCl2-extractable Al is >3-4 mg/ge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Aluminium toxicity appears to be reducing barley grain yields by more than 10% at surface soil pH <4.5 (0.01 mol CaCl2/L), or when CaCl2-extractable Al is >3-4 mg/g”
Claim · model-written summary
CaCl2-extractable Al in the surface soil was not a better indicator of Al toxicity than soil pH.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- indicator of Al toxicitye5
- Comparator
- soil pHe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield of barley was increased 9-30% at 6 sites, by lime application alleviating A1 toxicity”
e5“CaCl2-extractable A1 in the surface soil was not a better indicator of Al toxicity than soil pH”
The same questions in other papers
lime · yield · Hordeum vulgare (barley)Results differ
52 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
50 papers more in this group
See all 54 papers →lime · yield · x Triticosecale (triticale)Positive and negative results
5 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →lime · yield · Triticum aestivum (wheat)Positive and negative results
32 papers in the same direction as this paper · 140 in the opposite direction
- no effect
- positive
- positive
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.