Abstract
Common root rot(CRR), incited by Cochliobolus sativus, is a debilitating soil-borne disease of barley.While yield losses due to CRR are variable, they are significant due to the annual widespread occurrence of the disease in barley fields of North America.Control measures have been ineffective in reducing losses.Therefore, a study was initiated to determine if potassium fertilizers and systemic fungicides reduce CRR severity and positively influence grain yield and yield components of CRR diseased barley.Barley plots were inoculated with Cochliobolus sativus infested oat kernels.Six systemic, ergosterol inhibiting fungicides were applied to separate 'Washonupana' seed lots.KCl or K2SO4 was added with seed and inoculum to furrows at planting.Disease ratings were determined for each plot at maturity.At the soft dough stage, the following yield data were obtained: grain yield per row, total tiller number per row, harvestable tiller number per row, 1000 kernel weight, and kernel number per spike.The number of emerged plants per 3.3 m row was determined at the three leaf stage.Plant emergence was reduced by addition of inoculum to rows.While the potassium fertilizers did not affect plant emergence, nuarimol and imazalil seed treatment significantly(P<.05)increased emergence in inoculated rows.Addition of inoculum to rows did not increase disease levels in mature plants.However, nuarimol seed treatment did significantly(P<.05)reduce disease ratings in inoculated rows as did addition of KCI.Yield components were not affected by addition of inoculum to rows.While the seed treatments and the potassium fertilizers differentially affected, among themselves, yield components, neither resulted in significant P<.05) differences from the yield components of a population of nontreated inoculated barley plants.Pathological effects of CRR can be negated by treatment with certain systemic fungicides or KCl fertilizer.However, disease reduction did not result in increased grain yield and yield components of a plant population of differentially diseased plants.The disease intensity of a barley plot may apparently be reduced by use of certain control agents but compensatory effects by the plant may reduce or eliminate any potential benefits.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Adding C. sativus inoculum to barley rows reduced plant emergence.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- addition of inoculum to rowse0
- Outcome
- Plant emergencee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“barley”
e0“Plant emergence was reduced by addition of inoculum to rows”
Claim · model-written summary
Potassium fertilizers did not affect barley plant emergence.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- potassium fertilizerse0
- Outcome
- plant emergencee0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“the potassium fertilizers did not affect plant emergence”
Claim · model-written summary
Nuarimol seed treatment significantly increased barley emergence in inoculated rows.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- nuarimole0
- Outcome
- emergencee0
- Direction
- increasede0
- Qualifier
- inoculated rowse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“nuarimol and imazalil seed treatment significantly(P<.05)increased emergence in inoculated rows”
Claim · model-written summary
Imazalil seed treatment significantly increased barley emergence in inoculated rows.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- imazalil seed treatmente0
- Outcome
- emergencee0
- Direction
- increasede0
- Qualifier
- inoculated rowse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“nuarimol and imazalil seed treatment significantly(P<.05)increased emergence in inoculated rows”
Claim · model-written summary
Adding inoculum to rows did not increase disease levels in mature barley plants.
- Taxon
- barleyHordeum vulgaret0
- Organ / stage
- mature plantse0
- Treatment
- Addition of inoculum to rowse0
- Outcome
- disease levelse0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“Addition of inoculum to rows did not increase disease levels in mature plants”
Claim · model-written summary
Nuarimol seed treatment significantly reduced disease ratings in inoculated rows.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- nuarimol seed treatmente0
- Outcome
- disease ratingse0
- Direction
- reducee0
- Qualifier
- inoculated rowse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“nuarimol seed treatment did significantly(P<.05)reduce disease ratings in inoculated rows as did addition of KCI”
Claim · model-written summary
Addition of KCl significantly reduced disease ratings in inoculated rows.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- addition of KCIe0
- Outcome
- disease ratingse0
- Direction
- reducee0
- Qualifier
- inoculated rowse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“nuarimol seed treatment did significantly(P<.05)reduce disease ratings in inoculated rows as did addition of KCI”
Claim · model-written summary
Yield components were not affected by adding inoculum to barley rows.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- addition of inoculum to rowse0
- Outcome
- Yield componentse0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“Yield components were not affected by addition of inoculum to rows”
Claim · model-written summary
Neither the seed treatments nor the potassium fertilizers gave significant differences in yield components from nontreated inoculated barley plants.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- seed treatments and the potassium fertilizerse1
- Outcome
- yield componentse0
- Direction
- no_changeinferrede0
- Comparator
- nontreated inoculated barley plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“neither resulted in significant P<.05) differences from the yield components of a population of nontreated inoculated barley plants”
e1“the seed treatments and the potassium fertilizers differentially affected”
Claim · model-written summary
Disease reduction did not result in increased grain yield and yield components of the barley population of differentially diseased plants.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- disease reductione0
- Outcome
- grain yield and yield componentse0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“disease reduction did not result in increased grain yield and yield components of a plant population of differentially diseased plants”
Claim · model-written summary
Compensatory effects by the plant may reduce or eliminate potential benefits of reducing disease intensity in barley.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- potential benefitse0
- Qualifier
- compensatory effects by the plante0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“compensatory effects by the plant may reduce or eliminate any potential benefits”
The same questions in other papers
enilconazole · growth · Hordeum vulgare (barley)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
nuarimol · growth · Hordeum vulgare (barley)Results agree
1 paper in the same direction as this paper
- positive
inoculation · growth · Hordeum vulgare (barley)Results differ
21 papers in the same direction as this paper · 66 in the opposite direction
- positive
- positive
- positive
84 papers more in this group
See all 88 papers →seed treatment · yield · Hordeum vulgare (barley)Positive and negative results
5 papers in the same direction as this paper · 43 in the opposite direction
- positive
- positive
- positive
45 papers more in this group
See all 49 papers →seed treatment · growth · Hordeum vulgare (barley)Positive and negative results
46 papers in the same direction as this paper · 11 in the opposite direction
- no effect
- negative
- no effect
54 papers more in this group
See all 58 papers →inoculation · yield · Hordeum vulgare (barley)Positive and negative results
16 papers in the same direction as this paper · 83 in the opposite direction
- positive
- positive
- positive
96 papers more in this group
See all 100 papers →fertilization · growth · Hordeum vulgare (barley)Positive and negative results
26 papers in the same direction as this paper · 138 in the opposite direction
- positive
- positive
- positive
161 papers more in this group
See all 165 papers →fertilization · yield · Hordeum vulgare (barley)Positive and negative results
76 papers in the same direction as this paper · 473 in the opposite direction
- positive
- positive
- positive
546 papers more in this group
See all 550 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.