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Continuing Education > Herbicides > Flashcards

Herbicides Flashcards

1
Q

2, 4-D

  • MOA:
  • Chemical Forms
  • Weeds Controlled
  • Considerations
A

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.

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2
Q

Triclopyr

  • MOA:
  • Chemical Forms:
  • Weeds Controlled:
A
  • MOA: Auxin (growth regulator)
  • Chemical Forms: Acids, Amines (salts), Esters
  • Weeds Controlled: Broadleaf and Woody Plants
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3
Q

Dicamba

  • MOA:
  • Chemical Forms:
  • Weeds Conatrolled:
  • Considerations:
A
  • 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%)
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4
Q

MCPA

  • MOA:
  • Chemical Forms:
  • Weeds Controlled:
  • Considerations:
A
  • 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
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5
Q

MCPP

  • MOA:
  • Chemical Forms:
  • Weeds Controlled:
  • Considerations:
A
  • MOA: Auxin (PGR)
  • Chemical Forms: Acid or Ester
  • Weeds Controlled: Broadleaf
  • Considerations: Does well on sensitive turf like Bentgrass,
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6
Q

Fluroxypyr

  • MOA:
  • Chemical Forms:
  • Weeds Controlled:
  • Considerations:
A
  • MOA: Auxin (PGR)
  • Chemical Forms: Ester
  • Weeds Controlled: Broadleaf Weeds and Woody Brush
  • Considerations: Excellent control of Kocia.
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7
Q

Sulfentrazone

  • MOA:
  • Chemical Forms:
  • Weeds Controlled:
  • Considerations:
A
  • MOA: Contact - Cell Membrane Disruptor - Cells Explode
  • Chemical Forms:
  • Weeds Controlled: Broadleaf Weeds
  • Considerations: Burns them down, quick visual results
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8
Q

Carfentrazone

  • MOA:
  • Chemical Forms:
  • Weeds Controlled:
  • Considerations:
A
  • MOA: Contact - Cell Membrane Disruptor - Cells Explode
  • Chemical Forms:
  • Weeds Controlled: Broadleaf Weeds
  • Considerations: Burns them down with quick visual results
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9
Q

Pyraflufen

  • MOA:
  • Chemical Forms:
  • Weeds Controlled:
  • Considerations:
A
  • MOA: Contact - Cell Membrane Disruptor - Cells Explode
  • Chemical Forms:
  • Weeds Controlled: Broadleaf Weeds
  • Considerations: Burns them down with quick visual results
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10
Q

Florasulam

  • MOA:
  • Chemical Forms:
  • Weeds Controlled:
  • Considerations:
A
  • MOA: PGR
  • Chemical Forms:
  • Weeds Controlled: Broadleaf Weeds
  • Considerations: Tough on hard to kill broadleaf weeds in Cool Weather Times
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11
Q

Mesotrione

  • MOA:
  • Chemical Forms:
  • Weeds Controlled:
  • Considerations:
A
  • MOA: Pigment Inhibitor W/ Pre and Post- Emergent Activity
  • Chemical Forms:
  • Weeds Controlled: Broadleaf Weeds
  • Considerations: Can use at and after seeding
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12
Q

What is the MOA of: Paraquat and Diquat

A

Contact

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13
Q

ACCase inhibitors are commonly refered to by the nicknames of their chemical families…which are:

A

FOPS - DIMS -DENS

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14
Q

What weeds are ACCase inhibitors used on?

A

Grass weeds

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15
Q

ALS inhibitors inhibit what?

A

Branched-Chain Amino Acids

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16
Q

Many herbicides in what mode of action fall into the IMI’s or SU families?

A

ALS Inhibitors (BCAA inhibitors)

17
Q

What two chemical families fall into the ALS inhibitor MOA?

A

IMI’s and SU’s

18
Q

Root Growth Inhibitors have a distinct ______ color.

A

Yellow

19
Q

Growth Regulators are also called ______.

A

Synthetic Auxins

20
Q

photosynthesis inhibitors are used on what weeds?

A

Grass and Broadleaf weeds

21
Q

Atrazine has what MOA?

A

Photosynthesis Inhibitor

22
Q

What MOA has herbicides that are soil applied to control weeds that have not yet emerged from the soil?

A

Shoot Growth Inhibitors

23
Q

What MOA is Glyphosate?

A

Aromatic Amino Acid Inhibitor (group 9)

24
Q

What is the only herbicide in the Glutamine Synthesis Inhibitor MOA ?

A

Glufosinate

25
Q

What MOA is Glufosinate in?

A

Glutamine Synthesis Ihnibitors

26
Q

Mesotrione is in what MOA?

A

Pigment synthesis inhibotors

27
Q

PPO inhibitors are also referred to as:

A

Cell Membrane Disruptors

28
Q

What are two herbicides used for non-selective weed control and are photosynthesis inhibitors ?

A

Diquat and Paraquat

29
Q

Paraquat and Diquat are photosynthesis inhibitors and also this _____.

A

cell membrane disruptors

30
Q

FOPs DEMs and DIMs are part of what MOA group?

A

ACCase inhibitors

31
Q

IMI’s and SU’s are what MOA family?

A

ALS (Amino Acid) Inhibitors

32
Q

Trifuralin and pendamethalin do what?

A

inhibit root growth

33
Q

what is Diuron’s MOA? is it used as a pre or post emergent?

A

photosynthesis inhibitor

post emergent

34
Q

what MOA is Flumioxazin? what does the MOA do?

A 
PPO inhibitors (cell membrane disruptors)
makes cells explode - burn down
35
Q

flumioxazin has the same MOA as _____ and _____.

A

Sulfentrazone and Carfentrazone.

36
Q

flumioxazin is a pre or post emergent herbicide?

A

both

Continuing Education (7 decks)

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