“managing applied nitrogen on winter canola in the pacific northwest” idaho oil seed conference
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“Managing Applied Nitrogen on Winter Canola in the Pacific Northwest” Idaho Oil Seed Conference February 12, 2009 Moscow, Idaho. Don Wysocki, Tom Chastain, Daryl Ehrensing and Nick Sirovatka Oregon State University Columbia Basin Agricultural Research Center Pendleton, Oregon - PowerPoint PPT PresentationTRANSCRIPT
“Managing Applied Nitrogen on Winter Canola in the Pacific Northwest”
Idaho Oil Seed ConferenceFebruary 12, 2009
Moscow, Idaho
Don Wysocki, Tom Chastain,
Daryl Ehrensing and Nick Sirovatka Oregon State University
Columbia Basin Agricultural Research CenterPendleton, Oregon
541-278-4396 [email protected]
Objective
Determine the optimum nitrogen fertilizer rate for winter canola
Eastern Oregon
Willamette Valley
OSU Canola Fertilizer Guidehttp://extension.oregonstate.edu/catalog/pdf/em/em8943-e.pdf
Nitrogen
Nitrogen recommendation for various expected yields.
Expected Yield (lb/acre)
Nitrogenlb/acre
1000 70
2000 1403000 2104000 280
Nitrogen Recommendation
(Exp. Yield X N Requirement) - Soil test nitrogen
Example: 3000 lb expected yieldSoil test = 0-1 ft 30
1-2 ft 20 2-3 ft 15
(X 7lb/100lb = 210 - 65 = 145 N/acre
Rosette Bolt Bloom
N %
0
4.94.4
4.0
2.5 2.4
1.61.1 1.2
Sowing WinterRosette
SpringRosette
Bolting FirstBloom
EarlyBloom
FullBloom
PodFilling
Harvest
N %
92
51
28
8
34
102
13
33
0
20
40
60
80
100
120
DM X 100 N S P
lb/ac
re
Straw Seed
Nitrogen rates on winter canola
N Treatmentrate lb added per 100 lb of expected grain yield
0 0.5X 3.51X 7.0
1.5X 11.02X 14.0
Sowing Date: Sept. 18, 2007. Previous crop: Winter Wheat Cultivars Athena Irrigation : 3” prior to plant 11” April to harvest 5 replications Assure II November 17 Soil Test: 50 lb N/acre 0-3’Expected Yield: 4000Pre-plant N: 0, 120, 240, 360, 480 (46-0-0)
Harvest: “push” June 23, combine July 8
Hermiston Trial 2007-2008
0 (0) 120(.5x) 240(1x) 360(1.5x) 480(2x)0
1000
2000
3000
4000
5000
6000
7000
8000
1667
2915 32723605
3075
Yield of winter canola with applied N, Hermiston 2008
Applied Nitrogen lb/acre
Yield Lb/acre
0 (0) 120(.5x) 240(1x) 360(1.5x) 480(2x)0
1000
2000
3000
4000
5000
6000
7000
8000
1667
29153272 3605
3075
Yield of winter canola with applied N
Applied Nitrogen lb/acre
Yield Lb/acre
7 lb N / 100 lb Yield
0 (0) 120(.5x) 240(1x) 360(1.5x) 480(2x)0
1000
2000
3000
4000
5000
6000
7000
8000
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0
1667
2915
3272
3605
3075
3.0
5.8
8.9
11.4
17.2
Yield of winter canola with applied N
Applied Nitrogen lb/acre
Yield Lb/acrelb N/100 lb Yield
Sowing Date: Sept. 11, 2007. Previous crop: Grass seedFour cultivars: Athena, Baldur, Kronos, Virginia, 4 replications Herbicide: Trefan PPI
Pre-plant N: 50 lb N/acre dry (46-0-0)Spring N: 0, 50, 100, and 150 lb/acre February 20
Harvest: swath June 27, combine July 11
Corvallis Trial 2007-2008
0 50 100 1500
1000
2000
3000
4000
25222757
29593028
N Trial Corvallis (4 cultivars)
Applied N lb/acre
Yield lb/acre
0 50 100 1500
1000
2000
3000
4000
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
25222757
2959
3028
5.06.3
7.6
9.1N Trial Corvallis (4 cultivars)
Applied N lb/acre
Yield lb/acre
lb N/ 100 lb Yield
Summary
Canola has N requirements similar to wheat
Critical
Yield recommendations of 7 lb N/100 lb grain yield reasonable provided drought or heat do not lower expected yields
Split applications are recommended in the Willamette Valley, with majority of N in the early spring