Abstract
Abstract Western Canada grows more than 25% of Canadian soybeans [ Glycine max (L.) Merr.] and is the new northern extent of the North American soybean‐growing region. Canada is the seventh largest soybean‐exporting country, yet little information on yield and quality in modern cultivars exists for that region. The objective of this study was to determine the impact of delayed seeding on soybean seed yield, yield components, maturity, and seed quality in Manitoba, located in the eastern northern Great Plains, and provide the first characterization of the relative influence of environment, seeding date and cultivar on those variables. Field studies were conducted from 2015 to 2017 at three locations in southern Manitoba to evaluate the performance of three soybean cultivars at three seeding dates from 24 May to 24 June. Up to 90% of total variation in the response variables was explained by environment, seeding date, cultivar and their interactions, with environment often consuming the majority of total sums of squares. Among environments, seed yield ranged from 1610 to 3590 kg ha −1 , seed number from 1719 to 3828 seeds m −2 , seed weight from 125 to 169 g 1000 seeds −1 , oil concentration from 16.1 to 18.7% and protein concentration from 32.8 to 35.3%. Overall, very late seeding reduced yield, seed weight, and oil but did not affect protein. This study demonstrates that environmental conditions in Manitoba have a large influence on soybean performance compared to seeding date or pedigree and that protein concentration varies at a finer geographical scale than previously reported.
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Claims 11
Claim · model-written summary
Environment, seeding date, cultivar and their interactions explained up to 90% of total variation in soybean response variables.
- Taxon
- soybean
Glycine maxt0 - Treatment
- seeding datee0
- Outcome
- total variation in the response variablese0
- Value
- 90%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean seed yield”
e0“Up to 90% of total variation in the response variables was explained by environment, seeding date, cultivar and their interactions”
Claim · model-written summary
Environment often accounted for the majority of total sums of squares in soybean response variables.
- Taxon
- soybeanGlycine maxt0
- Treatment
- environmente0
- Outcome
- total sums of squarese0
- Qualifier
- often consuming the majoritye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean seed yield”
e0“with environment often consuming the majority of total sums of squares”
Claim · model-written summary
Among environments, soybean seed yield ranged from 1610 to 3590 kg ha −1.
- Taxon
- soybeanGlycine maxt0
- Outcome
- seed yielde0
- Value
- 1610 to 3590 kg ha −1e0
- Qualifier
- Among environmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean seed yield”
e0“Among environments, seed yield ranged from 1610 to 3590 kg ha −1”
Claim · model-written summary
Among environments, soybean seed number ranged from 1719 to 3828 seeds m −2.
- Taxon
- soybeanGlycine maxt0
- Outcome
- seed numbere0
- Value
- 1719 to 3828 seeds m −2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean seed yield”
e0“seed number from 1719 to 3828 seeds m −2”
Claim · model-written summary
Among environments, soybean seed weight ranged from 125 to 169 g 1000 seeds −1.
- Taxon
- soybeanGlycine maxt0
- Outcome
- seed weighte0
- Value
- 125 to 169 g 1000 seeds −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean seed yield”
e0“seed weight from 125 to 169 g 1000 seeds −1”
Claim · model-written summary
Among environments, soybean oil concentration ranged from 16.1 to 18.7%.
- Taxon
- soybeanGlycine maxt0
- Outcome
- oil concentratione0
- Value
- 16.1 to 18.7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean seed yield”
e0“oil concentration from 16.1 to 18.7%”
Claim · model-written summary
Among environments, soybean protein concentration ranged from 32.8 to 35.3%.
- Taxon
- soybeanGlycine maxt0
- Outcome
- protein concentratione0
- Value
- 32.8 to 35.3%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean seed yield”
e0“protein concentration from 32.8 to 35.3%”
Claim · model-written summary
Very late seeding reduced soybean yield, seed weight and oil concentration.
- Taxon
- soybeanGlycine maxt0
- Treatment
- very late seedinge0
- Outcome
- yield, seed weight, and oile0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean seed yield”
e0“very late seeding reduced yield, seed weight, and oil”
Claim · model-written summary
Very late seeding did not affect soybean protein concentration.
- Taxon
- soybeanGlycine maxt0
- Treatment
- very late seedinge0
- Outcome
- proteine0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean seed yield”
e0“very late seeding reduced yield, seed weight, and oil but did not affect protein”
Claim · model-written summary
Environmental conditions in Manitoba had a larger influence on soybean performance than seeding date or pedigree.
- Taxon
- soybeanGlycine maxe0
- Outcome
- soybean performancee0
- Comparator
- seeding date or pedigreee0
- Setting
- Manitobae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean seed yield”
e0“environmental conditions in Manitoba have a large influence on soybean performance compared to seeding date or pedigree”
Claim · model-written summary
Protein concentration varies at a finer geographical scale than previously reported.
- Taxon
- soybeanGlycine maxt0
- Outcome
- protein concentratione0
- Comparator
- previously reportede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean seed yield”
e0“protein concentration varies at a finer geographical scale than previously reported”
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See all 207 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.