Abstract
Abstract Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL to evaluate the effect of planting date, nitrogen (N) rate, N application timing, and tillage on grain yield and oil content of the grain, grain moisture, plant lodging, winter survival, and plant N content. Results indicated that planting rapeseed approximately one to two weeks prior to winter wheat in this region is preferable to planting earlier. Grain yield showed a significant linear increase with delayed planting date from 25 August to 24 September. Grain yield also increased quadratically with increasing N rate (with an optimum of about 250 kg N/ha) and increased (0.15 Mg/ha) due to splitting the N fertilizer into two even applications. An increase in grain yield was accompanied by an increase in grain moisture with Liborius (late maturing) having significantly greater grain moisture than Cobra. Winter survival increased linearly with delayed planting date but, was accompanied by a significant quadratic increase in plant lodging. Chisel, as compared to disk tillage, increased plant lodging slightly, but decreased winter survival slightly. Neither delayed planting, N rate, nor splitting of spring N affected oil content. Liborius produced significantly more oil than did Cobra.
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Claims 14
Claim · model-written summary
Planting rapeseed about one to two weeks before winter wheat is preferable to planting earlier in this region.
- Taxon
- Brassica napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse1 - Outcome
- planting rapeseed approximately one to two weeks prior to winter wheate2
- Comparator
- planting earliere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Results indicated that planting rapeseed approximately one to two weeks prior to winter wheat in this region is preferable to planting earlier”
Claim · model-written summary
Grain yield increased linearly with delayed planting date from 25 August to 24 September.
- Taxon
- Brassica napusBrassica napuse1
- Treatment
- delayed planting date from 25 August to 24 Septembere2
- Outcome
- Grain yielde2
- Direction
- increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Grain yield showed a significant linear increase with delayed planting date from 25 August to 24 September”
Claim · model-written summary
Grain yield increased quadratically with increasing N rate, with an optimum of about 250 kg N/ha.
- Taxon
- Brassica napusBrassica napuse1
- Treatment
- increasing N ratee2
- Outcome
- Grain yielde2
- Direction
- increasede2
- Qualifier
- with an optimum of about 250 kg N/hae2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Grain yield also increased quadratically with increasing N rate (with an optimum of about 250 kg N/ha) and increased (0.15 Mg/ha) due to splitting the N fertilizer into two even applications”
Claim · model-written summary
Splitting the N fertilizer into two even applications increased grain yield by 0.15 Mg/ha.
- Taxon
- Brassica napusBrassica napuse1
- Treatment
- splitting the N fertilizer into two even applicationse2
- Outcome
- Grain yielde2
- Direction
- increasede2
- Value
- 0.15 Mg/hae2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Grain yield also increased quadratically with increasing N rate (with an optimum of about 250 kg N/ha) and increased (0.15 Mg/ha) due to splitting the N fertilizer into two even applications”
Claim · model-written summary
An increase in grain yield was accompanied by an increase in grain moisture.
- Taxon
- Brassica napusBrassica napuse1
- Outcome
- grain moisturee2
- Direction
- increasee2
- Setting
- Brownstown, ILe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“An increase in grain yield was accompanied by an increase in grain moisture with Liborius (late maturing) having significantly greater grain moisture than Cobra”
Claim · model-written summary
Liborius had significantly greater grain moisture than Cobra.
- Taxon
- Brassica napusBrassica napuse1
- Material
- Liboriuse2
- Outcome
- grain moisturee2
- Direction
- greatere2
- Comparator
- Cobrae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“An increase in grain yield was accompanied by an increase in grain moisture with Liborius (late maturing) having significantly greater grain moisture than Cobra”
Claim · model-written summary
Winter survival increased linearly with delayed planting date.
- Taxon
- Brassica napusBrassica napuse1
- Treatment
- delayed planting datee2
- Outcome
- Winter survivale2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Winter survival increased linearly with delayed planting date but, was accompanied by a significant quadratic increase in plant lodging”
Claim · model-written summary
Delayed planting date was accompanied by a significant quadratic increase in plant lodging.
- Taxon
- Brassica napusBrassica napuse1
- Treatment
- delayed planting datee2
- Outcome
- plant lodginge2
- Direction
- increasee2
- Qualifier
- quadratice2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Winter survival increased linearly with delayed planting date but, was accompanied by a significant quadratic increase in plant lodging”
Claim · model-written summary
Chisel tillage, compared with disk tillage, increased plant lodging slightly.
- Taxon
- Brassica napusBrassica napuse1
- Treatment
- Chisele2
- Outcome
- plant lodginge2
- Direction
- increasede2
- Qualifier
- slightlye2
- Comparator
- disk tillagee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Chisel, as compared to disk tillage, increased plant lodging slightly, but decreased winter survival slightly”
Claim · model-written summary
Chisel tillage, compared with disk tillage, decreased winter survival slightly.
- Taxon
- Brassica napusBrassica napuse1
- Treatment
- Chisele2
- Outcome
- winter survivale2
- Direction
- decreasede2
- Qualifier
- slightlye2
- Comparator
- disk tillagee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Chisel, as compared to disk tillage, increased plant lodging slightly, but decreased winter survival slightly”
Claim · model-written summary
Delayed planting did not affect oil content.
- Taxon
- Brassica napusBrassica napuse1
- Treatment
- delayed plantinge2
- Outcome
- oil contente2
- Direction
- affectede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Neither delayed planting, N rate, nor splitting of spring N affected oil content”
Claim · model-written summary
N rate did not affect oil content.
- Taxon
- Brassica napusBrassica napuse1
- Treatment
- N ratee2
- Outcome
- oil contente2
- Direction
- affectede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Neither delayed planting, N rate, nor splitting of spring N affected oil content”
Claim · model-written summary
Splitting of spring N did not affect oil content.
- Taxon
- Brassica napusBrassica napuse1
- Treatment
- splitting of spring Ne2
- Outcome
- oil contente2
- Direction
- affectede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Neither delayed planting, N rate, nor splitting of spring N affected oil content”
Claim · model-written summary
Liborius produced significantly more oil than Cobra.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Two varieties of winter rapeseed (Brassica napus) (Cobra and Liborius) were planted at Brownstown, IL”
e2“Liborius produced significantly more oil than did Cobra”
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