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IOWA COMMERCIAL PEST ICIDE
APPL: RIGHT-OF-WAY
(CATEGORY 6) COMPLET E STUDY
GUIDE
Question : Who's Responsible?
Correct Answer: An Applicator Is Responsible For Any
Damage To Private Or Public Property Resulting From Careless Application Or Misuse Of Herbicides
Question : What Are Roadside Management Objectives?
Correct Answer: The Current Goal Of Many Roadside
Management Programs Is To 1) Control Only Those Plants Listed As Noxious Weeds Or 2) Plants That Interfere With The Vision Of Motorists, 3) Inhibit The Flow Of Water Through Drainage Ditches, 4) Pose A Fire Hazard, Or 5) Interfere With Activities Of Humans In Other Manners. Spot Treatments Of Problem Areas, Rather Than Broadcast Applications, Are Commonly Used Along Roadsides.
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Question : What Management Techniques Do Counties
Use To Maintain Prairie Vegetation On Roadsides?
Correct Answer: Counties Integrate Several Different
Management Techniques To Maintain A Strong, Healthy Plant Community. Techniques Include 1) Spot Spraying Perennial Weeds, 2) Mowing Of Annual & Biennial Weeds To Control Seed Production, And 3) Periodic Burning To Recycle Nutrients & Increase Plant Diversity.
Question : What Are The Most Commonly Used
Herbicides For Roadside Use?
Correct Answer: The Most Commonly Used Herbicides
For Roadsides Are Postemergence Chemicals That Selectively Control Herbaceous, Broadleaf Plants Without Injuring Grasses
Question : What Types Of Herbicides Are Registered For
Use In Rights-Of-Way?
Correct Answer: The Majority Of These Products Are
Either Growth Regulator Herbicides Or Als-Inhibiting
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Herbicides. These Herbicides Are Classified According To Their Mode Of Action, Or How They Kill Plants.
Question : List Some Common Growth Regulator
Herbicides
Correct Answer: Growth Regulator Herbicides Include
The 1) Phenoxy Products (2,4-D; 2,4-Dp; And Mcpp), 2) Dicamba (Banvel), 3) Triclopyr (Garlon), 4) Picloram (Tordon) And 5) Clopyralid (Stinger). To Broaden The Spectrum Of Control, These Herbicides Are Often Tank- Mixed Or Formulated As Products That Contain More Than One Active Ingredient (E.g., Crossbow Is A Combination Of 2,4-D And Triclopyr. The Specific Combination Used Should Be Based On Weeds Present, Rather Than Indiscriminately Adding Herbicides To The Spray Tank.
Question : What Are Some Characteristics Of Growth
Regulator Herbicides?
Correct Answer: Most Of These Herbicides Are Rapidly
Degraded In The Soil; Thus, They Provide Little Residual Control. Only Weeds That Are Established At The Time
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Of Application Will Be Controlled. All Of The Growth Regulator Herbicides Are Translocated Within The Plant, Making Them Effective For Both Annual & Perennial Weeds.
Question : List Some Common Als-Inhibiting Herbicides
Correct Answer: Als Is An Enzyme Involved In The
Synthesis Of Specific Amino Acids In Plants. 1) Sulfrometuron (Oust) And 2) Chlorsulfuron (Telar) Are The Most Common Als-Inhibitors Used On Roadsides For Broadleaf Control. Certain Perennial Grasses, Including Tall Fescue & Smooth Brome, Have A Relatively Low Tolerance To These Chemicals & May Be Injured Under Certain Conditions, Follow Label Rates Carefully. Plateau (Imazapic) And Journey (Imazapic & Glyphosate) Are Other Als-Inhibitors; Plateau Is Unique In That It Is Safe To Use On Native Grass & Wildflower Plantings.
Question : What Are The Best Times For Applications?
Correct Answer: Generally , Herbicides Are Most
Effective When Applied To Actively Growing Plants,