Herbicides Flashcards
2, 4-D
- MOA:
- Chemical Forms
- Weeds Controlled
- Considerations
MOA: Auxin ( Growth Regulator)
Chemical Forms: Amines (salts), Esters, Acid
Weeds Controlled: some Broadleaf, not Grasses
Considerations: Esters are volatile in the heat. Can damage bentgrass is percentage is too high. 0.60 % or less is best for sensitive turf.
Triclopyr
- MOA:
- Chemical Forms:
- Weeds Controlled:
- MOA: Auxin (growth regulator)
- Chemical Forms: Acids, Amines (salts), Esters
- Weeds Controlled: Broadleaf and Woody Plants
Dicamba
- MOA:
- Chemical Forms:
- Weeds Conatrolled:
- Considerations:
- MOA: Synthetic Auxin (Growth Regulator)
- Chemical Forms: Several Auxins and an Acid
- Weeds Controlled: Broadleaf Weeds and some Woody Plants
- Considerations: Volatile in heat, high percentages can damage trees and ornamentals (low rate would be 0.6%)
MCPA
- MOA:
- Chemical Forms:
- Weeds Controlled:
- Considerations:
- MOA: Auxin (PGR)
- Chemical Forms: Amines and Esters
- Weeds Controlled: Broadleaf and Woody Plants
- Considerations: Longer residual (2-3 months) than 2, 4-D (1 month) but more selective. Does better on woody plants than 2, 4-D
MCPP
- MOA:
- Chemical Forms:
- Weeds Controlled:
- Considerations:
- MOA: Auxin (PGR)
- Chemical Forms: Acid or Ester
- Weeds Controlled: Broadleaf
- Considerations: Does well on sensitive turf like Bentgrass,
Fluroxypyr
- MOA:
- Chemical Forms:
- Weeds Controlled:
- Considerations:
- MOA: Auxin (PGR)
- Chemical Forms: Ester
- Weeds Controlled: Broadleaf Weeds and Woody Brush
- Considerations: Excellent control of Kocia.
Sulfentrazone
- MOA:
- Chemical Forms:
- Weeds Controlled:
- Considerations:
- MOA: Contact - Cell Membrane Disruptor - Cells Explode
- Chemical Forms:
- Weeds Controlled: Broadleaf Weeds
- Considerations: Burns them down, quick visual results
Carfentrazone
- MOA:
- Chemical Forms:
- Weeds Controlled:
- Considerations:
- MOA: Contact - Cell Membrane Disruptor - Cells Explode
- Chemical Forms:
- Weeds Controlled: Broadleaf Weeds
- Considerations: Burns them down with quick visual results
Pyraflufen
- MOA:
- Chemical Forms:
- Weeds Controlled:
- Considerations:
- MOA: Contact - Cell Membrane Disruptor - Cells Explode
- Chemical Forms:
- Weeds Controlled: Broadleaf Weeds
- Considerations: Burns them down with quick visual results
Florasulam
- MOA:
- Chemical Forms:
- Weeds Controlled:
- Considerations:
- MOA: PGR
- Chemical Forms:
- Weeds Controlled: Broadleaf Weeds
- Considerations: Tough on hard to kill broadleaf weeds in Cool Weather Times
Mesotrione
- MOA:
- Chemical Forms:
- Weeds Controlled:
- Considerations:
- MOA: Pigment Inhibitor W/ Pre and Post- Emergent Activity
- Chemical Forms:
- Weeds Controlled: Broadleaf Weeds
- Considerations: Can use at and after seeding
What is the MOA of: Paraquat and Diquat
Contact
ACCase inhibitors are commonly refered to by the nicknames of their chemical families…which are:
FOPS - DIMS -DENS
What weeds are ACCase inhibitors used on?
Grass weeds
ALS inhibitors inhibit what?
Branched-Chain Amino Acids
Many herbicides in what mode of action fall into the IMI’s or SU families?
ALS Inhibitors (BCAA inhibitors)
What two chemical families fall into the ALS inhibitor MOA?
IMI’s and SU’s
Root Growth Inhibitors have a distinct ______ color.
Yellow
Growth Regulators are also called ______.
Synthetic Auxins
photosynthesis inhibitors are used on what weeds?
Grass and Broadleaf weeds
Atrazine has what MOA?
Photosynthesis Inhibitor
What MOA has herbicides that are soil applied to control weeds that have not yet emerged from the soil?
Shoot Growth Inhibitors
What MOA is Glyphosate?
Aromatic Amino Acid Inhibitor (group 9)
What is the only herbicide in the Glutamine Synthesis Inhibitor MOA ?
Glufosinate
