Abstract
Fungicides applied at different growth stages were compared for the control of wheat glume blotch, caused by Septoria nodorum (Berk.) Berk. In glasshouse and small‐scale field tests, 11 commercially used fungicides, when applied to fully emerged wheat ears, cv. Hobbit, gave only partial control of ear infection by spores applied immediately after spraying. They gave better control of infection of leaves by a similar inoculum. Larger field trials, moreover, indicated better foliar and ear disease control from fungicide applications made before ear emergence, compared with those applied later. In another field trial, nine fungicides were applied to replicated plots of winter wheat, cultivars Atou and Hobbit at GS 31, GS 39, GS 55 or GS 71. On five occasions from anthesis (25 June) until 30 July disease was assessed and green leaf area measured. The trial was harvested on 22 August 1980. Significantly greater yields and grain weights were obtained from plots sprayed with fungicide at GS 39 than from those sprayed at any other time or left unsprayed. Treatments made before symptoms of infection by S. nodorum developed (i.e. before GS 55) prolonged the duration of green leaf areas during the post‐anthesis period. Grain weight and yield increases were related closely to the duration of green leaf area above 75 96, but not to the amount of green leaf area at any single assessment nor to the subsequent degree of disease development. The data on which this abstract is based form part of a continuing research programme, the results of which will be published in full at a later date. Full details on the 1980 results referred to above appear in the Annual Report of Long Ashton Research Station (1980).
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Claims 8
Claim · model-written summary
In field trials, fungicide applications made before ear emergence gave better foliar and ear disease control of wheat than later applications.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- fungicide applications made before ear emergencee1
- Interactor
- Septoria nodorum
Parastagonospora nodorume0pathogen - Outcome
- foliar and ear disease controle1
- Direction
- bettere1
- Comparator
- those applied latere1
- Setting
- field trialse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Green Leaf Area”
e0“wheat glume blotch, caused by Septoria nodorum (Berk.) Berk.”
e1“Larger field trials, moreover, indicated better foliar and ear disease control from fungicide applications made before ear emergence, compared with those applied later”
Claim · model-written summary
Eleven fungicides applied to fully emerged wheat ears gave only partial control of ear infection.
- Taxon
- wheatTriticum aestivumt0
- Material
- cv. Hobbite2
- Treatment
- when applied to fully emerged wheat earse2
- Outcome
- control of ear infectione2
- Qualifier
- only partiale2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Green Leaf Area”
e2“11 commercially used fungicides, when applied to fully emerged wheat ears, cv. Hobbit, gave only partial control of ear infection by spores applied immediately after spraying”
Claim · model-written summary
Fungicides applied to fully emerged wheat ears gave better control of leaf infection than of ear infection.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- when applied to fully emerged wheat earse2
- Outcome
- control of infection of leavese3
- Direction
- bettere3
- Comparator
- ear infectione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Green Leaf Area”
e2“11 commercially used fungicides, when applied to fully emerged wheat ears, cv. Hobbit, gave only partial control of ear infection by spores applied immediately after spraying”
e3“They gave better control of infection of leaves by a similar inoculum”
Claim · model-written summary
Fungicide at GS 39 gave significantly greater yields and grain weights than other timings or no fungicide.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- sprayed with fungicide at GS 39e4
- Outcome
- yields and grain weightse4
- Direction
- greatere4
- Comparator
- those sprayed at any other time or left unsprayede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Green Leaf Area”
e4“Significantly greater yields and grain weights were obtained from plots sprayed with fungicide at GS 39 than from those sprayed at any other time or left unsprayed”
Claim · model-written summary
Fungicide treatments made before S. nodorum symptoms developed prolonged the duration of green leaf area in wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Treatments made before symptoms of infection by S. nodorum developede5
- Interactor
- S. nodorumParastagonospora nodorume5pathogen
- Outcome
- duration of green leaf arease5
- Direction
- prolongede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Green Leaf Area”
e5“Treatments made before symptoms of infection by S. nodorum developed (i.e. before GS 55) prolonged the duration of green leaf areas during the post‐anthesis period”
Claim · model-written summary
Grain weight and yield increases in wheat were closely related to the duration of green leaf area above 75 96.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- green leaf areae6
- Outcome
- Grain weight and yield increasese6
- Qualifier
- duration of green leaf area above 75 96e6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Green Leaf Area”
e6“Grain weight and yield increases were related closely to the duration of green leaf area above 75 96, but not to the amount of green leaf area at any single assessment nor to the subsequent degree of disease development”
Claim · model-written summary
Grain weight and yield increases in wheat were not related to the amount of green leaf area at any single assessment.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- green leaf areae6
- Outcome
- Grain weight and yield increasese6
- Qualifier
- the amount of green leaf area at any single assessmente6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Green Leaf Area”
e6“Grain weight and yield increases were related closely to the duration of green leaf area above 75 96, but not to the amount of green leaf area at any single assessment nor to the subsequent degree of disease development”
Claim · model-written summary
Grain weight and yield increases in wheat were not related to the subsequent degree of Septoria nodorum disease development.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- Septoria nodorumParastagonospora nodorume0pathogen
- Outcome
- Grain weight and yield increasese6
- Qualifier
- the subsequent degree of disease developmente6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Green Leaf Area”
e0“wheat glume blotch, caused by Septoria nodorum (Berk.) Berk.”
e6“Grain weight and yield increases were related closely to the duration of green leaf area above 75 96, but not to the amount of green leaf area at any single assessment nor to the subsequent degree of disease development”
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See all 877 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.