Right of Way - Iowa Pesticide Applicator
Growth regulator application is most effective when applied..? -answer in early spring when sod has
greened - growth regulators slows down active growing so you want to apply while green so it's
absorbed
Which pressures help reduce herbicide drift? -answer Reducing spray pressure (to make bigger droplets
that fall faster) and hanging nozzle to a type which emits larger droplets
Phenoxy-herbicides are widely used along roadsides because..? -answer They don't damage grasses.
Phenoxy's active ingredient is 2,4-D that only kills forbes (flowering plants)
Soil sterilant misapplication and damage can sometimes be alleviated by mixing how many pound of
activated charcoal per 1000 sq ft for every pound of herbicide? -answer 3
Which nonselective herbicides has the longest period of control when used at a given site? -answer
Dichiobenil
In order to avoid injury to nearby desirable trees; persistent, nonselective herbicides such as Hyvar
should be applied..? -answer Outside an area equal to twice the heigh of the desirable tree
Krenite is different from most brush herbicides because: -answer Little effect is seen the year of
application
Herbicide spraying can be performed, as a general rule, until wind speed exceeds how many miles per
hour? -answer 10
Which formulation doesn't dissolve in water? -answer wettable powders
A major disadvantage of the phenix-herbicides is..? -answer They can damage desirable plants at very
low rates, making them susceptible to drift damage
, Basal bark treatment is not recommended for woody species larger than 6" in diameter because..? -
answer The bark prevents penetration of the herbicide and reduces effectiveness
The greatest risk involved with roadside spraying of phenoxy-herbicides is..? -answer damage to non-
target plants due to drift
The best time to treat perennials developing from an established root system is..? -answer During early
flowering
The downward movement of pesticides in soil is called..? -answer Leaching
Which type of weed is best controlled in early bloom? -answer Perennial
Pesticides may move from the target area and damage the environment by..? -answer Drift, soil runoff
or erosion, leaching thru soil
Basal bark applications are..? -answer Possible throughout the year
What type of chemical resistant gloves should you use if a pesticide application will last one or two
hours? -answer moderately or highly chemical resistant
Volitalization -answer may occur after spray reaches the target site; and usually occurs at high
temperatures
Growth regulator herbicides: -answer Rapidly degrade or are tied up in the soil
What should you do with clothing completely soaked with full strength concentrate pesticides? -answer
Discard the clothing with any contaminated PPE
Which of the following are annual weeds? -answer Pigweed
Growth regulator application is most effective when applied..? -answer in early spring when sod has
greened - growth regulators slows down active growing so you want to apply while green so it's
absorbed
Which pressures help reduce herbicide drift? -answer Reducing spray pressure (to make bigger droplets
that fall faster) and hanging nozzle to a type which emits larger droplets
Phenoxy-herbicides are widely used along roadsides because..? -answer They don't damage grasses.
Phenoxy's active ingredient is 2,4-D that only kills forbes (flowering plants)
Soil sterilant misapplication and damage can sometimes be alleviated by mixing how many pound of
activated charcoal per 1000 sq ft for every pound of herbicide? -answer 3
Which nonselective herbicides has the longest period of control when used at a given site? -answer
Dichiobenil
In order to avoid injury to nearby desirable trees; persistent, nonselective herbicides such as Hyvar
should be applied..? -answer Outside an area equal to twice the heigh of the desirable tree
Krenite is different from most brush herbicides because: -answer Little effect is seen the year of
application
Herbicide spraying can be performed, as a general rule, until wind speed exceeds how many miles per
hour? -answer 10
Which formulation doesn't dissolve in water? -answer wettable powders
A major disadvantage of the phenix-herbicides is..? -answer They can damage desirable plants at very
low rates, making them susceptible to drift damage
, Basal bark treatment is not recommended for woody species larger than 6" in diameter because..? -
answer The bark prevents penetration of the herbicide and reduces effectiveness
The greatest risk involved with roadside spraying of phenoxy-herbicides is..? -answer damage to non-
target plants due to drift
The best time to treat perennials developing from an established root system is..? -answer During early
flowering
The downward movement of pesticides in soil is called..? -answer Leaching
Which type of weed is best controlled in early bloom? -answer Perennial
Pesticides may move from the target area and damage the environment by..? -answer Drift, soil runoff
or erosion, leaching thru soil
Basal bark applications are..? -answer Possible throughout the year
What type of chemical resistant gloves should you use if a pesticide application will last one or two
hours? -answer moderately or highly chemical resistant
Volitalization -answer may occur after spray reaches the target site; and usually occurs at high
temperatures
Growth regulator herbicides: -answer Rapidly degrade or are tied up in the soil
What should you do with clothing completely soaked with full strength concentrate pesticides? -answer
Discard the clothing with any contaminated PPE
Which of the following are annual weeds? -answer Pigweed
