Abstract
A canola (Brassica napus L.) experiment to determine the effect of unconventional or novel inputs compared with standard and increased seed and nitrogen rates was conducted at 14 different Alberta and Saskatchewan, Canada sites in 2013 and 2014. All treatments were compared to a “best management practice” (BMP) treatment with canola seeded at 100 seeds m−2 and fertilized according to soil test recommendations. Canola density across all sites averaged 56 plants m−2 and increased to 76 plants m−2 at 150 seeds m−2. Flowering and maturity time were both decreased when 25% less nitrogen was applied in the side-band at seeding. Compared to the BMP treatment, there were trends for lower yield (P = 0.0528) when side-banded nitrogen was reduced by 25% at seeding time or for higher yield (P = 0.0530) when 25% more nitrogen was added as a foliar treatment at the bud stage. Canola yields were generally economically optimized in the BMP treatment at soil test recommended nitrogen rates. Increasing the seeding rate from 100 to 150 seeds m−2 did not increase canola yield; however, it did decrease % green seed enough to potentially affect canola grade and economic returns. Increasing or decreasing nitrogen fertilizer compared to BMP often decreased or increased seed oil concentration, respectively, and had the opposite effect on seed protein concentration. Despite incurring additional costs compared to the BMP treatment, none of the novel inputs impacted canola emergence, days to flowering, days to maturity, yield or quality.
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Claims 13
Claim · model-written summary
Increasing seeding from 100 to 150 seeds m−2 raised canola density from 56 to 76 plants m−2.
- Taxon
- Canola
.jpg?width=60)
Brassica napus var. napuse0 - Treatment
- 150 seeds m−2e0
- Outcome
- Canola densitye0
- Direction
- increasede0
- Value
- 76 plants m−2e0
- Qualifier
- 56 plants m−2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Canola density across all sites averaged 56 plants m−2 and increased to 76 plants m−2 at 150 seeds m−2”
Claim · model-written summary
Applying 25% less side-banded nitrogen decreased flowering and maturity time.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- 25% less nitrogene0
- Outcome
- Flowering and maturity timee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola”
e0“Flowering and maturity time were both decreased when 25% less nitrogen was applied in the side-band at seeding”
Claim · model-written summary
Reducing side-banded nitrogen by 25% showed a trend toward lower yield versus BMP.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- side-banded nitrogen was reduced by 25%e0
- Outcome
- yielde0
- Direction
- lowere0
- Comparator
- BMP treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola”
e0“Compared to the BMP treatment, there were trends for lower yield (P = 0.0528) when side-banded nitrogen was reduced by 25% at seeding time”
Claim · model-written summary
Adding 25% more foliar nitrogen at bud stage showed a trend toward higher yield versus BMP.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- 25% more nitrogen was added as a foliar treatment at the bud stagee0
- Outcome
- yielde0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola”
e0“higher yield (P = 0.0530) when 25% more nitrogen was added as a foliar treatment at the bud stage”
Claim · model-written summary
BMP nitrogen rates generally optimized canola yield economically.
- Taxon
- CanolaBrassica napus var. napuse0
- Outcome
- yieldse0
- Qualifier
- generally economically optimizede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Canola yields were generally economically optimized in the BMP treatment at soil test recommended nitrogen rates”
Claim · model-written summary
Raising seeding rate from 100 to 150 seeds m−2 did not increase canola yield.
- Taxon
- canolaBrassica napus var. napuse0
- Treatment
- 150 seeds m−2e0
- Outcome
- canola yielde0
- Direction
- did not increasee0
- Comparator
- 100e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the seeding rate from 100 to 150 seeds m−2 did not increase canola yield”
Claim · model-written summary
Raising seeding rate decreased green seed percentage.
- Taxon
- CanolaBrassica napus var. napust0
- Outcome
- % green seede0
- Direction
- decreasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola”
e0“it did decrease % green seed enough to potentially affect canola grade and economic returns”
Claim · model-written summary
Increasing nitrogen fertilizer decreased seed oil concentration.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- nitrogen fertilizere0
- Outcome
- seed oil concentratione0
- Direction
- decreasede0
- Comparator
- BMPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola”
e0“Increasing or decreasing nitrogen fertilizer compared to BMP often decreased or increased seed oil concentration, respectively”
Claim · model-written summary
Decreasing nitrogen fertilizer increased seed oil concentration.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- decreasing nitrogen fertilizere0
- Outcome
- seed oil concentratione0
- Direction
- increasede0
- Comparator
- BMPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola”
e0“Increasing or decreasing nitrogen fertilizer compared to BMP often decreased or increased seed oil concentration, respectively”
Claim · model-written summary
Increasing nitrogen fertilizer increased seed protein concentration.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- nitrogen fertilizere0
- Outcome
- seed protein concentratione0
- Direction
- increaseinferrede0
- Comparator
- BMPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola”
e0“Increasing or decreasing nitrogen fertilizer compared to BMP often decreased or increased seed oil concentration, respectively, and had the opposite effect on seed protein concentration”
Claim · model-written summary
Decreasing nitrogen fertilizer decreased seed protein concentration.
- Taxon
- CanolaBrassica napus var. napust0
- Treatment
- decreasing nitrogen fertilizere0
- Outcome
- seed protein concentratione0
- Direction
- decreaseinferrede0
- Comparator
- BMPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Canola”
e0“Increasing or decreasing nitrogen fertilizer compared to BMP often decreased or increased seed oil concentration, respectively, and had the opposite effect on seed protein concentration”
Claim · model-written summary
Novel inputs did not affect canola emergence, flowering, maturity, yield or quality compared with BMP.
- Taxon
- canolaBrassica napus var. napuse0
- Treatment
- novel inputse0
- Outcome
- canola emergence, days to flowering, days to maturitye0
- Direction
- nonee0
- Comparator
- BMP treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Despite incurring additional costs compared to the BMP treatment, none of the novel inputs impacted canola emergence, days to flowering, days to maturity, yield or quality”
Claim · model-written summary
Novel inputs did not affect canola yield or quality compared with BMP.
- Taxon
- canolaBrassica napus var. napuse0
- Treatment
- novel inputse0
- Outcome
- yield or qualitye0
- Direction
- nonee0
- Comparator
- BMP treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Despite incurring additional costs compared to the BMP treatment, none of the novel inputs impacted canola emergence, days to flowering, days to maturity, yield or quality”
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See all 239 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.