2. Herbicide Resistance
• Its seemingly on everyone’s radar now
…no panic though
• CWSS (Edmonton Nov 2015)
• WSSA (San Juan Feb 2016)
www.weedsummit.ca
8. COMMON RAGWEED
• Summer annual
• Competitive
• Male vs female parts leads to pollen shed and
huge genetic diversity
• Large and heavy seed
• Dormant seed
9. Canada fleabane
• Winter annual or summer annual
• Competitive
• Self pollinating: limited genetic
diversity within a population
• Light seed with pappus (parachute) therefore
highly mobile
• Limited seed dormancy
19. Nufarm
World’s largest manufacturer of 2,4-D
New active ingredients in
development with
excellent fleabane control
New tank mix combinations
Corn, soybeans, cereals
20. valent
Flumioxazin heavy use preemergence
in USA soys for:
waterhemp and palmer amaranth
Group 2 and 5 biotypes of lamb’s-quarters and pigweed
Fierce (flumioxazin plus pyroxasulfone)
Corn, soybeans, cereals
22. FMC
New active ingredients in development
New tank mix combinations
Burndown and residual in corn, soybeans, cereals
23. Bayer cropscience
Liberty Link corn, soybeans and canola
Broad spectrum
Non systemic
Non residual
Balance GT Beans
Tolerant to ‘Converge’ herbicide and glyphosate
Broad sectrum
Residual
PRE applications
2017 or 2018 launch
24. Bayer cropscience
Leading edge in safener technology
Developing safened dicamba
Allows greater crop safety with soys and corn
Application window extended from 5 lf to 8 leaf corn
Problem weeds too… VICCR, MEDLU, ERICA etc.
25. basf
STEWARDSHIP driven
Banvel owners
Grow the best crops possible
Alternative methods of
weed control
Be mindful of weed spectrum
Multiple modes of effective
action (MMOEA)
MMOEA in a single year are far better at delaying
resistance than herbicide rotation
* University of Illinois
27. • Resistance to 2,4-D in corn and soybeans, 2017?
Banvel2,4-D MCPA EstapropDistinct
Assure Excel Poast
• Resistance to the ‘fops’ but not the ‘dims’
Stacked with glyphosate
Volunteer corn control
Dow agrosciences
29. monsanto
• Registered Feb 3, 2016
• Gene from a bacteria causing ONLY
dicamba tolerance in DT soybeans
Banvel 2,4-D MCPA LontrelDistinct
30. The dicamba molecule…
Banvel II, Distinct, Hawkeye Power, XtendiMax
Strengths:
Excellent control on most broadleaf weeds including:
GR Canada fleabane (emerged)
GR ragweeds – common and giant (emerged)
GR waterhemp (PRE and POST)
Pre and POST emergence applications
Limited resistance worldwide
Minimal grass activity though
42. Particle drift vs vapour drift
Droplet size
(tactile variables)
Wind @ spray
New Formulations
Heat even 1-2 DAT
so what of drift?
Novel crops and herbicides will help out some
43. Sprayer cleanout
Photo source Monsanto demo plots: Chatham, Ontario
• Even trace amounts
have big impacts
• These are rinses with
water, sprayed over
conventional soybeans
44. • Soybeans? No problem
• Volunteer Enlist corn is resistant to ‘FOP’ herbicides
…need ‘DIM’ herbicide for control
• Antagonism issues for corn control
And volunteers?
