Abstract
Pageau, D. and Lajeunesse, J. 2011. Effect of seeding date on oilseed flax grown in a cool climate. Can. J. Plant Sci. 91: 29–35. In Quebec, the growing season is relatively short and most crops are sown early in the spring. However, flax (Linum usitatissimum L.) production is recent in Quebec and the effect of time of seeding on flax productivity has not yet been studied. The objective of this project was to determine the effect of four different sowing dates on the productivity of oilseed flax grown in a cool climate in Quebec. Four planting dates (mid-May to mid-June) were evaluated for 4 yr (2004, 2006, 2007 and 2008) with four cultivars (AC Emerson, AC McDuff, CDC Bethune and Lightning). During 2 yr, delays in seeding reduced grain yields. Moreover, in 2006 and 2007, flax seeded at the last planting date (mid-June) did not reach maturity. Compared with the earliest seeding date, a 2-wk delay in sowing reduced grain yields by 34 to 42% in 2006 and by 25 to 51% in 2007. Late sowing also reduced the oil content and 1000-grain weight of flax. These results indicate that oilseed flax should be sown early (11–18 May) in regions where the climate is cool.
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Claims 6
Claim · model-written summary
Delays in seeding reduced flax grain yields over the two years of the study.
- Taxon
- flax
Linum usitatissimume3 - Treatment
- delays in seedinge0
- Outcome
- grain yieldse0
- Direction
- reducede0
- Qualifier
- During 2 yre0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During 2 yr, delays in seeding reduced grain yields.”
e3“Late sowing also reduced the oil content and 1000-grain weight of flax”
Claim · model-written summary
A 2-week sowing delay reduced flax grain yield by 34 to 42% in 2006 relative to the earliest seeding date.
- Taxon
- flaxLinum usitatissimume3
- Treatment
- a 2-wk delay in sowinge2
- Outcome
- grain yieldse2
- Direction
- reducede2
- Value
- 34 to 42%e2
- Qualifier
- 2006e2
- Comparator
- earliest seeding datee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Compared with the earliest seeding date, a 2-wk delay in sowing reduced grain yields by 34 to 42% in 2006 and by 25 to 51% in 2007”
e3“Late sowing also reduced the oil content and 1000-grain weight of flax”
Claim · model-written summary
A 2-week sowing delay reduced flax grain yield by 25 to 51% in 2007 relative to the earliest seeding date.
- Taxon
- flaxLinum usitatissimume3
- Treatment
- a 2-wk delay in sowinge2
- Outcome
- grain yieldse2
- Direction
- reducede2
- Value
- 25 to 51%e2
- Qualifier
- 2007e2
- Comparator
- earliest seeding datee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Compared with the earliest seeding date, a 2-wk delay in sowing reduced grain yields by 34 to 42% in 2006 and by 25 to 51% in 2007”
e3“Late sowing also reduced the oil content and 1000-grain weight of flax”
Claim · model-written summary
Flax seeded at the last planting date did not reach maturity in 2006 and 2007.
- Taxon
- flaxLinum usitatissimume1
- Treatment
- last planting datee1
- Outcome
- reach maturitye1
- Qualifier
- in 2006 and 2007e1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“in 2006 and 2007, flax seeded at the last planting date (mid-June) did not reach maturity”
Claim · model-written summary
Late sowing reduced the oil content and 1000-grain weight of flax.
- Taxon
- flaxLinum usitatissimume3
- Treatment
- Late sowinge3
- Outcome
- oil content and 1000-grain weighte3
- Direction
- reducede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Late sowing also reduced the oil content and 1000-grain weight of flax”
Claim · model-written summary
Oilseed flax should be sown early (11–18 May) in cool regions.
Verbatim
e4“oilseed flax should be sown early (11–18 May) in regions where the climate is cool”
The same questions in other papers
sowing time · quality: oil · Linum usitatissimum (flax)Positive and negative results
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See all 20 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.