Abstract
Abstract Canola ( Brassica napins L.) has the potential for being used in a double‐cropping system (two crops grown in 1 yr) as a winter crop in the humid subtropical southeastern U.S. climate, but little information is known about its nitrogen (N) management when grown in this region. Thus, a field study was conducted at two locations (Shorter, AL: Compass loamy sand; Prattville, AL: Lucedale fine sandy loam) in 2016 to determine the effect of different rates of N fertilizer on plant growth, seed yield, and N uptake of canola. The experimental design was a randomized complete block with four replications. The N rates included were 0, 68, 135, 180, 202, and 270 kg N ha −1 . Linear‐plateau regression was used to evaluate the response of plant growth, seed yield, and N uptake to N rate. Overall, canola growth, yield, and N uptake were highly dependent on N fertility. Applying 180 kg N ha −1 or more for canola production significantly increased plant height, plant biomass accumulation, seed yield, and N uptake compared with the unfertilized control at both locations. The linear‐plateau regression model indicated that the optimal N rate was 197–232 kg N ha −1 for these southeastern U.S. soils. This study suggests that winter canola grown in a humid subtropical region of the United States can be a successful winter crop for a double‐crop production system and provide seed yields comparable to yields from major winter canola production areas.
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Claims 5
Claim · model-written summary
N fertilizer significantly increased canola plant height and biomass compared with the unfertilized control
- Taxon
- Canola
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Brassica napus var. napuse1 - Treatment
- different rates of N fertilizere2
- Outcome
- plant height, plant biomass accumulatione3
- Direction
- increasede3
- Comparator
- unfertilized controle3
- Setting
- Shorter, ALe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“Canola ( Brassica napins L.) has the potential for being used in a double”
e2“a field study was conducted at two locations (Shorter, AL: Compass loamy sand; Prattville, AL: Lucedale fine sandy loam) in 2016 to determine the effect of different rates of N fertilizer”
e3“significantly increased plant height, plant biomass accumulation, seed yield, and N uptake compared with the unfertilized control at both locations”
Claim · model-written summary
N fertilizer significantly increased canola seed yield and N uptake compared with the unfertilized control
- Taxon
- CanolaBrassica napus var. napuse1
- Treatment
- different rates of N fertilizere2
- Outcome
- seed yield, and N uptakee3
- Direction
- increasede3
- Comparator
- unfertilized controle3
- Setting
- Shorter, ALe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Canola ( Brassica napins L.) has the potential for being used in a double”
e2“a field study was conducted at two locations (Shorter, AL: Compass loamy sand; Prattville, AL: Lucedale fine sandy loam) in 2016 to determine the effect of different rates of N fertilizer”
e3“significantly increased plant height, plant biomass accumulation, seed yield, and N uptake compared with the unfertilized control at both locations”
Claim · model-written summary
The optimal N rate for winter canola on these southeastern soils was 197–232 kg N ha −1
- Taxon
- CanolaBrassica napus var. napuse1
- Outcome
- optimal N ratee5
- Value
- 197–232 kg N ha −1e5
- Setting
- southeastern U.S. soilse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Canola ( Brassica napins L.) has the potential for being used in a double”
e5“the optimal N rate was 197–232 kg N ha −1 for these southeastern U.S. soils”
Claim · model-written summary
Winter canola can be a successful winter crop in a double-crop system in the humid subtropical US
- Taxon
- winter canolaBrassica napus var. napuse6
- Outcome
- successful winter crope6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Canola ( Brassica napins L.) has the potential for being used in a double”
e6“winter canola grown in a humid subtropical region of the United States can be a successful winter crop”
Claim · model-written summary
Winter canola in the humid subtropical US provides seed yields comparable to major winter canola production areas
- Taxon
- winter canolaBrassica napus var. napuse7
- Outcome
- seed yieldse7
- Direction
- comparablee7
- Comparator
- major winter canola production arease7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“provide seed yields comparable to yields from major winter canola production areas”
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