Aquatic Herbicide Applicator Verified Quizzes +
Top-Scoring Assignments | A+ Guaranteed
How many herbicides are registered in the USA? - About 200
How many aquatic herbicides are registered in the USA? - 10
What are the absorption characteristic groups that herbicides are classified by? - Contact
herbicides
Systematic herbicides
What are the physiological processes groups that herbicides are classified by? - Cell
division
Tissue development
Photosynthesis
Respiration
Nitrogen metabolism and enzyme activity
What are the selectivity groups that herbicides are classified by? - Nonselective (broad
spectrum)
Selective
List the aquatic contact herbicides - Endothall
Diquat
Copper
List the aquatic systematic herbicides - 2,4-D
Dichlobenil
Fluoridone
Glyphosate
Simazine
,List cell division aquatic herbicides - Dichlobenil
List tissue development aquatic herbicides - 2,4-D
List the photosynthesis aquatic herbicides - Copper
Diquat
Fluridone
Simazine
List the respiration aquatic herbicides - Endothall
List the nitrogen metabolism and enzyme activity aquatic herbicides - Glyphosate
List the broad spectrum aquatic herbicides - Copper
Diquat
Endothall
Glyphosate
Simazine
Dichlobenil
Selectivity can be affected by... - the amount of herbicide applied
List the selective aquatic herbicides - 2,4-D
Fluridone
What weather conditions can affect herbicide appliaction? - Rainfall, Wind, Temperature,
Water movement, Soil chemistry, and Water chemistry
Why does more rainfall affect herbicide application? - Washes off foliar applied herbicide
before it can be adequately absorbed into the plant
How does less rainfall affect herbicide application? - drought stressed plants are less
likely to absorb both foliar and soil applied herbicides
Which application is most affected by wind? - Foliar applications
, How does wind affect herbicide application? - Affects the plants ability to absorb
herbicides
Causes water movement that carries herbicides away from target plant
Increased likelihood of drift
How does water movement affect herbicide application? - Can move herbicide in the
water away from target plant before it is absorbed
What techniques should you use to account for water movement.. even in slow moving waters?
- 1. Use of invert emulsions or polymers and trailing hoses to aid sinking the herbicide
and adhering it to the plants
2. Use of special herbicide formulations for flowing water such as slow release pellets
3. Use of rapidly absorbed herbicides
4. Use of sequential application or injection equipment to increase
How does soil chemistry affect herbicide application? - Soil with high organic matter and
clay have a greater capacity for binding herbicides and require high application rates than other
soil types, such as sandy soils
Which environment is most affected by soil chemistry when it comes to herbicide application? -
Ditch bank weed control
What 3 water chemistry components are most important when it comes to herbicide
application? - pH
Turbidity
Hardness
Top-Scoring Assignments | A+ Guaranteed
How many herbicides are registered in the USA? - About 200
How many aquatic herbicides are registered in the USA? - 10
What are the absorption characteristic groups that herbicides are classified by? - Contact
herbicides
Systematic herbicides
What are the physiological processes groups that herbicides are classified by? - Cell
division
Tissue development
Photosynthesis
Respiration
Nitrogen metabolism and enzyme activity
What are the selectivity groups that herbicides are classified by? - Nonselective (broad
spectrum)
Selective
List the aquatic contact herbicides - Endothall
Diquat
Copper
List the aquatic systematic herbicides - 2,4-D
Dichlobenil
Fluoridone
Glyphosate
Simazine
,List cell division aquatic herbicides - Dichlobenil
List tissue development aquatic herbicides - 2,4-D
List the photosynthesis aquatic herbicides - Copper
Diquat
Fluridone
Simazine
List the respiration aquatic herbicides - Endothall
List the nitrogen metabolism and enzyme activity aquatic herbicides - Glyphosate
List the broad spectrum aquatic herbicides - Copper
Diquat
Endothall
Glyphosate
Simazine
Dichlobenil
Selectivity can be affected by... - the amount of herbicide applied
List the selective aquatic herbicides - 2,4-D
Fluridone
What weather conditions can affect herbicide appliaction? - Rainfall, Wind, Temperature,
Water movement, Soil chemistry, and Water chemistry
Why does more rainfall affect herbicide application? - Washes off foliar applied herbicide
before it can be adequately absorbed into the plant
How does less rainfall affect herbicide application? - drought stressed plants are less
likely to absorb both foliar and soil applied herbicides
Which application is most affected by wind? - Foliar applications
, How does wind affect herbicide application? - Affects the plants ability to absorb
herbicides
Causes water movement that carries herbicides away from target plant
Increased likelihood of drift
How does water movement affect herbicide application? - Can move herbicide in the
water away from target plant before it is absorbed
What techniques should you use to account for water movement.. even in slow moving waters?
- 1. Use of invert emulsions or polymers and trailing hoses to aid sinking the herbicide
and adhering it to the plants
2. Use of special herbicide formulations for flowing water such as slow release pellets
3. Use of rapidly absorbed herbicides
4. Use of sequential application or injection equipment to increase
How does soil chemistry affect herbicide application? - Soil with high organic matter and
clay have a greater capacity for binding herbicides and require high application rates than other
soil types, such as sandy soils
Which environment is most affected by soil chemistry when it comes to herbicide application? -
Ditch bank weed control
What 3 water chemistry components are most important when it comes to herbicide
application? - pH
Turbidity
Hardness
