Brassica carinata - University of Florida€¦ · Brassica carinata N response (Adapted from...
Transcript of Brassica carinata - University of Florida€¦ · Brassica carinata N response (Adapted from...
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Brassica carinata
Eric Johnson, AAFC, Scott, Sk
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Brassica carinata seeding rates
Carinata
Seed rate Seed Yld
Seeds m-2 kg ha-1 kg ha-1
25 1.2 1100
50 2.3 1504
100 4.7 1796
200 9.3 1891
400 18.6 2009
800 37.2 2086
Yields increase at higher seeding rates but
net returns maximized at these rates
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Brassica carinata N response
(Adapted from Johnson et al. 2014. CJPS
and unpublished data)
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0 50 100 150 200 250
Yie
ld (
kg/h
a)
N rate (kg/ha)
N input for maximum yield
N input for maximum economic yield
Assumptions: N fertilizer cost = 45 cents/lb Camelina Price = $ 9.50 / bushel
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N Response in Camelina
Yie
ld (
kg h
a-1)
N rate (kg/ha)
Assumptions: N fertilizer cost = 45 cents/lb Camelina Price = 18 cents/lb or $ 9.00 / bushel
N input for maximum yield
N input for maximum economic yield
Mean of 7 site-years 2008 - 2010
Malhi, Johnson et al. 2014. Canadian Journal of Soil Science
0
500
1000
1,500
2,000
2,500
3,000
0 25 50 75 100 125 150 175 200
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Hemp Response to N.
Vera et al. CJPS 2004.
175
198
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“The Old”
• Trifluralin registered in “mustards”.
Fortress, a combination of granule of
triallate and trifluralin also registered in
mustards.
• Ethafluralin has completed PMRA Re-
review and may be eligible for new
registrations, eg. for Brassica carinata
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Assure / Muster in B. carinata
• Assue (quizalifop) and Muster Toss-N-Go
(ethametsulfuron) are registered in
carinata.
• 2012 data raised some concerns about
tank-mix and crop injury (was it due to
adjuvant, timing?)
• Additional studies conducted in 2013
– Scott, Stewart Valley
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Assure / Muster tank-mix studies
• Applied 1 and 2X rates of Assure and
Muster tank-mix either with Sure-Mix or
Merge adjuvant at 2, 4 and 6-leaf stage of
carinata.
• Also, had a weed-free check for
comparison.
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Assure / Muster tank-mix in carinata – Scott, 2013
Seed Yield
0
10
20
30
40
50
60
70
80
2-lf 4-lf 6-lf Untreated
Yie
ld (
bu
s/ac
re)
Carinata Leaf-Stage
Assure / Muster / Sure-Mix 1X Assure / Muster / Sure-Mix 2X
Assure / Muster / Merge 1X Assure / Muster / Merge 2X
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Assure / Muster tank-mix in carinata – Scott, 2013
Seed Yield
40
50
60
70
80
2-lf 4-lf 6-lf
Yie
ld (
bu
s/ac
re)
Carinata Leaf-Stage
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Assure / Muster tank-mix in carinata – Scott, 2013
Visual Injury ratings
0
10
20
30
40
2-lf 4-lf 6-lf Untreated
% in
jury
Carinata Leaf-Stage
Assure / Muster / Sure-Mix 1X Assure / Muster / Sure-Mix 2X
Assure / Muster / Merge 1X Assure / Muster / Merge 2X
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Assure / Muster tank-mix in carinata
Stewart Valley, 2013 Visual Injury ratings
0
10
20
30
40
50
60
70
80
2-lf 4-lf 6-lf Untreated
% in
jury
Carinata Leaf-Stage
Assure / Muster / Sure-Mix 1X Assure / Muster / Sure-Mix 2X
Assure / Muster / Merge 1X Assure / Muster / Merge 2X
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Assure / Muster tank-mix in carinata
Stewart Valley, Seed Yield
0
5
10
15
20
2-lf 4-lf 6-lf Untreated
Yie
ld (
bu
s/ac
re)
Carinata Leaf-Stage
Assure / Muster / Sure-Mix 1X Assure / Muster / Sure-Mix 2X
Assure / Muster / Merge 1X Assure / Muster / Merge 2X
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Authority in Mustards
• Registration has been submitted
• Registration will be for 43 acre / jug rate
only (105 g ai/ha rate)
• Have seen injury when soils get saturated
• Lower rate?
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Authority in Mustard, Scott ,2013
Effect on plant stand
0
20
40
60
80
100
120
140
Carinata Oriental Yellow
Pla
nts
pe
r sq
uar
e m
ete
r
Mustard Species
0 70 105 140 210
Cross-hatched bars are
statistically lower than the
untreated check
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77.3
56.3
33.7
77.6
60.5
35.7
73.1
59.7
38.7
75.8
59.1
34.1
70.1
48.5
35.0
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
Carinata Oriental Yellow
Yie
ld (
bu
she
ls /
acr
e)
Mustard Species
0 70 105 140 210
Authority in Mustard, Scott ,2013
Effect on Seed Yield
Cross-hatched bars are
statistically lower than the
untreated check
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Authority in Mustard, Scott ,2013
Effect on Crop Injury
0.0
5.0
10.0
15.0
20.0
Carinata Oriental Yellow
% V
isu
al I
nju
ry
Mustard Species
0 70 105 140 210
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HERBICIDE TOLERANCE
DEVELOPMENT
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Herbicide Tolerance Goals
• Brassica carinata
– Group 2 herbicide tolerance (imi, su) stacked
with Group 4 tolerance (fluroxypyr, dicamba)
• Tolerance being developed either through
seed or microspore mutagenesis.
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New Agronomic Studies
• Located at Scott, Swift Current, and
Lethbridge, AB
• Crop Sequence Study
• N X seeding rate – Weedy and Weed-free