Abstract
Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley. Barley variety and seeding rate affected barley density, height at maturity, and seed yield, as well as wild oat shoot dry weight and seed yield in most experiments, but there was no variety by seeding rate interaction. As expected, the semidwarf varieties Falcon and CDC Earl were the shortest. Barley seedling emergence and subsequent plant densities varied among varieties, locations, and years. The hull-less varieties Falcon and CDC Dawn had the poorest emergence in most cases, whereas AC Lacombe and Seebe had the highest emergence. Wild oat shoot dry matter and seed production was highest in the Falcon, CDC Dawn, and CDC Earl plots, suggesting that these were the least competitive with wild oat. Barley yield loss from wild oat interference also tended to be highest in these varieties. Poor emergence of Falcon and CDC Dawn and the shorter stature of Falcon and CDC Earl likely contributed to their relatively poor competitiveness with wild oat. Increasing the seeding rate improved the competitiveness of all varieties, as evidenced by reduced wild oat shoot dry matter and seed production and, in some cases, improved barley yields.Nomenclature: Wild oat, Avena fatua L. #3 AVEFA; barley, Hordeum vulgare L. ‘Falcon’, ‘Phoenix’, ‘AC Lacombe’, ‘Seebe’, ‘CDC Earl’, ‘Harrington’, ‘CDC Dawn’.Additional index words: Hull-less barley, semidwarf barley, wild oat competition.
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Claims 12
Claim · model-written summary
Increasing the seeding rate reduced wild oat shoot dry matter and seed production in barley.
- Taxon
- barley (Hordeum vulgare)
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Hordeum vulgaree0 - Treatment
- Increasing the seeding ratee1
- Interactor
- wild oate0weed
- Outcome
- wild oat shoot dry matter and seed productione1
- Direction
- reducede1
- Setting
- Vegreville and Lacombe, ABe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e1“Increasing the seeding rate improved the competitiveness of all varieties, as evidenced by reduced wild oat shoot dry matter and seed production”
Claim · model-written summary
Increasing the seeding rate improved barley yields in some cases.
- Taxon
- barley (Hordeum vulgare)Hordeum vulgaree0
- Treatment
- Increasing the seeding ratee1
- Outcome
- barley yieldse2
- Direction
- improvede2
- Qualifier
- in some casese2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e1“Increasing the seeding rate improved the competitiveness of all varieties, as evidenced by reduced wild oat shoot dry matter and seed production”
e2“and, in some cases, improved barley yields”
Claim · model-written summary
Wild oat shoot dry matter and seed production were highest in the Falcon, CDC Dawn and CDC Earl barley plots.
- Taxon
- barley (Hordeum vulgare)Hordeum vulgaree0
- Material
- Falcon, CDC Dawn, and CDC Earle3
- Interactor
- wild oate0weed
- Outcome
- Wild oat shoot dry matter and seed productione3
- Direction
- higheste3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e3“Wild oat shoot dry matter and seed production was highest in the Falcon, CDC Dawn, and CDC Earl plots, suggesting that these were the least competitive with wild oat”
Claim · model-written summary
The semidwarf barley varieties Falcon and CDC Earl were the shortest at maturity.
- Taxon
- barley (Hordeum vulgare)Hordeum vulgaree0
- Material
- Falcon and CDC Earle4
- Outcome
- height at maturitye5
- Direction
- shorteste4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e4“As expected, the semidwarf varieties Falcon and CDC Earl were the shortest”
e5“Barley variety and seeding rate affected barley density, height at maturity, and seed yield”
Claim · model-written summary
The hull-less barley varieties Falcon and CDC Dawn had the poorest emergence in most cases.
- Taxon
- barley (Hordeum vulgare)Hordeum vulgaree0
- Material
- Falcon and CDC Dawne6
- Outcome
- emergencee6
- Direction
- pooreste6
- Qualifier
- in most casese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e6“The hull-less varieties Falcon and CDC Dawn had the poorest emergence in most cases, whereas AC Lacombe and Seebe had the highest emergence”
Claim · model-written summary
AC Lacombe and Seebe barley had the highest emergence.
- Taxon
- barley (Hordeum vulgare)Hordeum vulgaree0
- Material
- AC Lacombe and Seebee6
- Outcome
- emergencee6
- Direction
- higheste6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e6“The hull-less varieties Falcon and CDC Dawn had the poorest emergence in most cases, whereas AC Lacombe and Seebe had the highest emergence”
Claim · model-written summary
Barley variety and seeding rate affected barley density, height at maturity and seed yield.
- Taxon
- barley (Hordeum vulgare)Hordeum vulgaree0
- Treatment
- Barley variety and seeding ratee5
- Outcome
- barley density, height at maturity, and seed yielde5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e5“Barley variety and seeding rate affected barley density, height at maturity, and seed yield”
Claim · model-written summary
Barley variety and seeding rate affected wild oat shoot dry weight and seed yield in most experiments.
- Taxon
- barley (Hordeum vulgare)Hordeum vulgaree0
- Treatment
- Barley variety and seeding ratee5
- Interactor
- wild oate0weed
- Outcome
- wild oat shoot dry weight and seed yielde7
- Qualifier
- in most experimentse7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e5“Barley variety and seeding rate affected barley density, height at maturity, and seed yield”
e7“as well as wild oat shoot dry weight and seed yield in most experiments”
Claim · model-written summary
There was no variety by seeding rate interaction in barley.
- Taxon
- barley (Hordeum vulgare)Hordeum vulgaree0
- Outcome
- variety by seeding rate interactione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e2“but there was no variety by seeding rate interaction”
Claim · model-written summary
Poor emergence and shorter stature likely contributed to the poor competitiveness of Falcon and CDC Earl with wild oat.
- Taxon
- barley (Hordeum vulgare)Hordeum vulgaree0
- Material
- Falcon and CDC Dawne3
- Interactor
- wild oate0weed
- Outcome
- competitiveness with wild oate3
- Qualifier
- Poor emergence of Falcon and CDC Dawn and the shorter stature of Falcon and CDC Earle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e3“Poor emergence of Falcon and CDC Dawn and the shorter stature of Falcon and CDC Earl likely contributed to their relatively poor competitiveness with wild oat”
Claim · model-written summary
Barley yield loss from wild oat interference tended to be highest in the Falcon, CDC Dawn and CDC Earl varieties.
- Taxon
- barley (Hordeum vulgare)Hordeum vulgaree0
- Interactor
- wild oate0weed
- Outcome
- Barley yield loss from wild oat interferencee4
- Direction
- higheste4
- Qualifier
- also tended toe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e4“Barley yield loss from wild oat interference also tended to be highest in these varieties”
Claim · model-written summary
Barley seedling emergence and subsequent plant densities varied among varieties, locations and years.
- Taxon
- barley (Hordeum vulgare)Hordeum vulgaree0
- Outcome
- seedling emergence and subsequent plant densitiese5
- Qualifier
- varied among varieties, locations, and yearse5
- Setting
- locationse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted at Vegreville and Lacombe, AB, to determine the influence of barley (Hordeum vulgare) variety and seeding rate on interference of wild oat (Avena fatua) with barley”
e5“Barley seedling emergence and subsequent plant densities varied among varieties, locations, and years”
The same questions in other papers
density · yield · Hordeum vulgare (barley)Positive and negative results
72 papers in the same direction as this paper · 21 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
- positive
93 papers more in this group
See all 97 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.