PESTICIDE APPLICATOR CERTIFICATION EXAM ACTUAL EXAM) COMPLETE QUESTIONS WITH
DETAILED VERIFIED ANSWERS (100% CORRECT ANSWERS)
Weed management Strategies -CORRECT ANSWER-o mechanical - tillage, mowing, flooding.
o cultural - rotation, competition.
o Biological - bugs
o chemical - herbicides
Growth Regulator Herbicides -CORRECT ANSWER-Selective, Translocate
Example: 2,4-D
Amino Acid Synthesis Inhibitors -CORRECT ANSWER-non-selective, translocate
Example: Arsenal, Roundup
Lipid Inhibitor -CORRECT ANSWER-Selective, translocate, interfere with new hand growth
Seedling Growth Inhibitors -CORRECT ANSWER-prevent root or shoot development on seedling
Photosynthesis Inhibitors -CORRECT ANSWER-Interfere with photosynthesis
Example: Spike
Cell Membrane Disruptors -CORRECT ANSWER-Contact herbicides
Example: Gramoxone
Pigment Inhibitors -CORRECT ANSWER-Interfere with photosynthesis
Herbicide Application in Annual Life Cycle -CORRECT ANSWER-Seeding and vegetative
, Herbicide Application in Biennial Life Cycle -CORRECT ANSWER-Seeding and Rosette
Herbicide Application in Perennial Life Cycle -CORRECT ANSWER-Seeding, bud, early flower, full
flower, fall regrowth
Herbicide Tolerance and Resistance -CORRECT ANSWER-o Tolerance - when a plant has historically
survived a particular herbicide action
o Susceptibility - when a plant is killed by herbicide action
o Resistance - when a plant has evolved mechanism to survive a particular herbicide action.
Minimizing Herbicide Resistance -CORRECT ANSWER-o Tolerance - when a plant has historically
survived a particular herbicide action
o Susceptibility - when a plant is killed by herbicide action
o Resistance - when a plant has evolved mechanism to survive a particular herbicide action.
2,4-D -CORRECT ANSWER-Selective, growth regulator, high volatility, high potential for drift, peas,
grapes, and tomatoes very sensitive, grain and corn are not sensitive
Soil Residual Herbicides -CORRECT ANSWER-Last from several weeks to several years, LTR's (long-
term residual herbicides) kill most vegetation and leave soil nonproductive from one to several years
Nozzle types -CORRECT ANSWER-Solid stream, fan, cone
Nozzle materials: Carbide and Ceramic -CORRECT ANSWER-Most expensive, most resistant to
abrasion and corrosion
Nozzle materials: Stainless steel -CORRECT ANSWER-good resistance to abraision and corrosion,
moderately priced
Nozzle Materials: Brass -CORRECT ANSWER-resist corrosion but not abrasion
Nozzle materials: Aluminum -CORRECT ANSWER-inexpensive, resist some corrosion, wear quickly
DETAILED VERIFIED ANSWERS (100% CORRECT ANSWERS)
Weed management Strategies -CORRECT ANSWER-o mechanical - tillage, mowing, flooding.
o cultural - rotation, competition.
o Biological - bugs
o chemical - herbicides
Growth Regulator Herbicides -CORRECT ANSWER-Selective, Translocate
Example: 2,4-D
Amino Acid Synthesis Inhibitors -CORRECT ANSWER-non-selective, translocate
Example: Arsenal, Roundup
Lipid Inhibitor -CORRECT ANSWER-Selective, translocate, interfere with new hand growth
Seedling Growth Inhibitors -CORRECT ANSWER-prevent root or shoot development on seedling
Photosynthesis Inhibitors -CORRECT ANSWER-Interfere with photosynthesis
Example: Spike
Cell Membrane Disruptors -CORRECT ANSWER-Contact herbicides
Example: Gramoxone
Pigment Inhibitors -CORRECT ANSWER-Interfere with photosynthesis
Herbicide Application in Annual Life Cycle -CORRECT ANSWER-Seeding and vegetative
, Herbicide Application in Biennial Life Cycle -CORRECT ANSWER-Seeding and Rosette
Herbicide Application in Perennial Life Cycle -CORRECT ANSWER-Seeding, bud, early flower, full
flower, fall regrowth
Herbicide Tolerance and Resistance -CORRECT ANSWER-o Tolerance - when a plant has historically
survived a particular herbicide action
o Susceptibility - when a plant is killed by herbicide action
o Resistance - when a plant has evolved mechanism to survive a particular herbicide action.
Minimizing Herbicide Resistance -CORRECT ANSWER-o Tolerance - when a plant has historically
survived a particular herbicide action
o Susceptibility - when a plant is killed by herbicide action
o Resistance - when a plant has evolved mechanism to survive a particular herbicide action.
2,4-D -CORRECT ANSWER-Selective, growth regulator, high volatility, high potential for drift, peas,
grapes, and tomatoes very sensitive, grain and corn are not sensitive
Soil Residual Herbicides -CORRECT ANSWER-Last from several weeks to several years, LTR's (long-
term residual herbicides) kill most vegetation and leave soil nonproductive from one to several years
Nozzle types -CORRECT ANSWER-Solid stream, fan, cone
Nozzle materials: Carbide and Ceramic -CORRECT ANSWER-Most expensive, most resistant to
abrasion and corrosion
Nozzle materials: Stainless steel -CORRECT ANSWER-good resistance to abraision and corrosion,
moderately priced
Nozzle Materials: Brass -CORRECT ANSWER-resist corrosion but not abrasion
Nozzle materials: Aluminum -CORRECT ANSWER-inexpensive, resist some corrosion, wear quickly
