Abstract
Studies of a tillage x rotation field experiment begun in 1978 at Avon, South Australia, have demonstrated a decline in rhizoctonia root rot of wheat. In direct-drilled treatments the severity of rhizoctonia root rot culminated in 1983, with patches of poor plant growth accounting for up to 46% of the crop area, and then declined to negligible levels by 1990. Disease severity was significantly less in cultivated than direct-drilled treatments. In cultivated treatments the onset of decline was more difficult to determine, but by 1990 there was negligible rhizoctonia root rot in either tillage treatment, with no increase in disease from 1990 to 1994. Decline in rhizoctonia root rot occurred largely independent of rotation, although there were significant differences in root damage and patch area between rotations, with disease generally being more severe in wheat following pasture than following peas, medic, or wheat. When inoculum of R. solani was added to soil collected from the experimental site in 1985, wheat grown in soil from direct-drilled plots had significantly less disease than wheat grown in soil from cultivated treatments, indicating a possible development of suppression.
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Claims 8
Claim · model-written summary
Rhizoctonia root rot severity in direct-drilled wheat peaked in 1983 and declined to negligible levels by 1990.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- direct-drilled treatmentse2
- Interactor
- Rhizoctonia solani AG-8
Rhizoctonia solani AG-8t0pathogen - Outcome
- severity of rhizoctonia root rote2
- Setting
- Avon, South Australiat0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Decline in root rot ( Rhizoctonia solani AG-8) in wheat in a tillage and rotation experiment at Avon, South Australia”
e2“In direct-drilled treatments the severity of rhizoctonia root rot culminated in 1983, with patches of poor plant growth accounting for up to 46% of the crop area, and then declined to negligible levels by 1990”
Claim · model-written summary
Patches of poor plant growth covered up to 46% of the crop area in direct-drilled wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- direct-drilled treatmentse2
- Interactor
- Rhizoctonia solani AG-8Rhizoctonia solani AG-8t0pathogen
- Outcome
- patches of poor plant growthe2
- Value
- 46%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Decline in root rot ( Rhizoctonia solani AG-8) in wheat in a tillage and rotation experiment at Avon, South Australia”
e2“In direct-drilled treatments the severity of rhizoctonia root rot culminated in 1983, with patches of poor plant growth accounting for up to 46% of the crop area, and then declined to negligible levels by 1990”
Claim · model-written summary
Disease severity was significantly lower in cultivated than in direct-drilled wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- cultivatede4
- Outcome
- Disease severitye4
- Direction
- lesse4
- Comparator
- direct-drilled treatmentse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Decline in root rot ( Rhizoctonia solani AG-8) in wheat in a tillage and rotation experiment at Avon, South Australia”
e4“Disease severity was significantly less in cultivated than direct-drilled treatments”
Claim · model-written summary
By 1990 Rhizoctonia root rot was negligible in either tillage treatment, with no increase in disease from 1990 to 1994.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- either tillage treatmente5
- Outcome
- negligible rhizoctonia root rote5
- Qualifier
- no increase in disease from 1990 to 1994e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Decline in root rot ( Rhizoctonia solani AG-8) in wheat in a tillage and rotation experiment at Avon, South Australia”
e5“by 1990 there was negligible rhizoctonia root rot in either tillage treatment, with no increase in disease from 1990 to 1994”
Claim · model-written summary
Decline in Rhizoctonia root rot occurred largely independent of rotation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- rotatione6
- Outcome
- Decline in rhizoctonia root rote6
- Direction
- no_changeinferrede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Decline in root rot ( Rhizoctonia solani AG-8) in wheat in a tillage and rotation experiment at Avon, South Australia”
e6“Decline in rhizoctonia root rot occurred largely independent of rotation”
Claim · model-written summary
Root rot was more severe in wheat following pasture than following peas, medic or wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- wheat following pasturee7
- Outcome
- diseasee7
- Direction
- more severee7
- Comparator
- following peas, medic, or wheate7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Decline in root rot ( Rhizoctonia solani AG-8) in wheat in a tillage and rotation experiment at Avon, South Australia”
e7“with disease generally being more severe in wheat following pasture than following peas, medic, or wheat”
Claim · model-written summary
Root damage and patch area differed significantly between rotations.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- rotationse7
- Outcome
- root damage and patch areae7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Decline in root rot ( Rhizoctonia solani AG-8) in wheat in a tillage and rotation experiment at Avon, South Australia”
e7“there were significant differences in root damage and patch area between rotations”
Claim · model-written summary
Wheat grown in soil from direct-drilled plots had significantly less disease than wheat grown in soil from cultivated treatments after R. solani inoculum was added.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- inoculum of R. solanie7
- Interactor
- R. solaniRhizoctonia solanie7pathogen
- Outcome
- diseasee7
- Direction
- lesse7
- Comparator
- soil from cultivated treatmentse7
- Setting
- soil collected from the experimental sitee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Decline in root rot ( Rhizoctonia solani AG-8) in wheat in a tillage and rotation experiment at Avon, South Australia”
e7“When inoculum of R. solani was added to soil collected from the experimental site in 1985, wheat grown in soil from direct-drilled plots had significantly less disease than wheat grown in soil from cultivated treatments”
The same questions in other papers
Rhizoctonia solani · disease · Triticum aestivum (wheat)Positive and negative results
1 in the opposite direction
- negative
rotation · disease · Triticum aestivum (wheat)Positive and negative results
17 papers in the same direction as this paper · 20 in the opposite direction
- positive
- positive
- positive
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See all 38 papers →inoculation · disease · Triticum aestivum (wheat)Positive and negative results
103 papers in the same direction as this paper · 59 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- negative
160 papers more in this group
See all 164 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.