Brassica carinata

Eric Johnson, AAFC, Scott, Sk

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

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and unpublished data)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

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

Hemp Response to N.

Vera et al. CJPS 2004.

175

198

“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

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

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.

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

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

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

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

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

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?

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

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

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

HERBICIDE TOLERANCE

DEVELOPMENT

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.

New Agronomic Studies

• Located at Scott, Swift Current, and

Lethbridge, AB

• Crop Sequence Study

• N X seeding rate – Weedy and Weed-free