Abstract
O'Donovan, J. T., Turkington, T. K., Edney, M. J., Juskiw, P. E., McKenzie, R. H., Harker, K. N., Clayton, G. W., Lafond, G. P., Grant, C. A., Brandt, S., Johnson, E. N., May, W. E. and Smith, E. 2012. Effect of seeding date and seeding rate on malting barley production in western Canada. Can. J. Plant Sci. 92: 321–330. Barley (Hordeum vulgare L.) growers in western Canada often have difficulty achieving malting grade. This is usually due to unfavourable climatic conditions, but sub-optimal agronomic practices may also be a factor. Field experiments were conducted in 2006, 2007 and 2008 at eight locations in western Canada (24 site-years) to evaluate the effects of seeding date (relatively early and late) and seeding rate (100, 200, 300, 400 and 500 seeds m −2 ) on AC Metcalfe barley yield and malt quality parameters. Delayed seeding often resulted in negative effects including increased protein concentration, decreased kernel plumpness and yield. However, at 6 site-years, higher yields occurred at the later seeding date. 300 seeds m −2 was usually optimal; maintained or improved yield, decreased protein concentration, increased kernel uniformity and time to seed maturity, and decreased tillering. In most cases, seeding at more than 300 seeds m −2 did not result in an improved outcome, and there was a risk of reduced yield and kernel plumpness at rates above this level. A multivariate analysis indicated that relatively low barley plant densities were associated primarily with northern locations with low soil pH.
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Claims 11
Claim · model-written summary
Delayed seeding increased barley protein concentration.
- Taxon
- Barley
.jpg?width=60)
Hordeum vulgaree1 - Treatment
- Delayed seedinge0
- Outcome
- protein concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Delayed seeding often resulted in negative effects including increased protein concentration”
e1“Barley (Hordeum vulgare L.)”
Claim · model-written summary
Delayed seeding decreased barley kernel plumpness.
- Taxon
- BarleyHordeum vulgaree1
- Treatment
- Delayed seedinge0
- Outcome
- kernel plumpnesse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed seeding often resulted in negative effects including increased protein concentration, decreased kernel plumpness and yield”
e1“Barley (Hordeum vulgare L.)”
Claim · model-written summary
Delayed seeding often decreased barley yield.
- Taxon
- BarleyHordeum vulgaree1
- Treatment
- Delayed seedinge0
- Outcome
- yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed seeding often resulted in negative effects including increased protein concentration, decreased kernel plumpness and yield”
e1“Barley (Hordeum vulgare L.)”
Claim · model-written summary
At 6 site-years, later seeding produced higher barley yields.
- Taxon
- BarleyHordeum vulgaree1
- Treatment
- later seeding datee0
- Outcome
- yieldse0
- Direction
- highere0
- Qualifier
- 6 site-yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 6 site-years, higher yields occurred at the later seeding date”
e1“Barley (Hordeum vulgare L.)”
Claim · model-written summary
A rate of 300 seeds m −2 usually maintained or improved barley yield.
- Taxon
- BarleyHordeum vulgaree1
- Treatment
- 300 seeds m −2e0
- Outcome
- yielde0
- Direction
- maintained or improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“300 seeds m −2 was usually optimal; maintained or improved yield”
e1“Barley (Hordeum vulgare L.)”
Claim · model-written summary
A rate of 300 seeds m −2 decreased barley protein concentration.
- Taxon
- BarleyHordeum vulgaree1
- Treatment
- 300 seeds m −2e0
- Outcome
- protein concentratione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“300 seeds m −2 was usually optimal; maintained or improved yield, decreased protein concentration”
e1“Barley (Hordeum vulgare L.)”
Claim · model-written summary
A rate of 300 seeds m −2 increased kernel uniformity and time to seed maturity.
- Taxon
- BarleyHordeum vulgaree1
- Treatment
- 300 seeds m −2e0
- Outcome
- kernel uniformity and time to seed maturitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“300 seeds m −2 was usually optimal; maintained or improved yield, decreased protein concentration, increased kernel uniformity and time to seed maturity”
e1“Barley (Hordeum vulgare L.)”
Claim · model-written summary
A rate of 300 seeds m −2 decreased barley tillering.
- Taxon
- BarleyHordeum vulgaree1
- Treatment
- 300 seeds m −2e0
- Outcome
- tilleringe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“300 seeds m −2 was usually optimal; maintained or improved yield, decreased protein concentration, increased kernel uniformity and time to seed maturity, and decreased tillering”
e1“Barley (Hordeum vulgare L.)”
Claim · model-written summary
Rates above 300 seeds m −2 generally did not improve barley outcomes.
- Taxon
- BarleyHordeum vulgaree1
- Treatment
- more than 300 seeds m −2e0
- Outcome
- improved outcomee0
- Direction
- did not result in an improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeding at more than 300 seeds m −2 did not result in an improved outcome”
e1“Barley (Hordeum vulgare L.)”
Claim · model-written summary
Rates above 300 seeds m −2 risked reduced barley yield and kernel plumpness.
- Taxon
- BarleyHordeum vulgaree2
- Treatment
- rates above this levele0
- Outcome
- yield and kernel plumpnesse0
- Direction
- reducede0
- Qualifier
- riske0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a risk of reduced yield and kernel plumpness at rates above this level”
e1“300 seeds m −2 was usually optimal”
e2“Barley (Hordeum vulgare L.)”
Claim · model-written summary
Relatively low barley plant densities were associated primarily with northern locations with low soil pH.
- Taxon
- BarleyHordeum vulgaree1
- Outcome
- barley plant densitiese0
- Direction
- relatively lowe0
- Qualifier
- low soil pHe0
- Setting
- northern locationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relatively low barley plant densities were associated primarily with northern locations with low soil pH”
e1“Barley (Hordeum vulgare L.)”
The same questions in other papers
sowing time · quality: protein · Hordeum vulgare (barley)Positive and negative results
4 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- positive
- positive
6 papers more in this group
See all 10 papers →sowing time · yield · Hordeum vulgare (barley)Positive and negative results
38 papers in the same direction as this paper · 31 in the opposite direction
- positive
- positive
- positive
66 papers more in this group
See all 70 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.