LICENSE STUDY GUIDE 2026
COMPLETE QUESTIONS AND
VERIFIED ANSWERS
◉ What do Starlings eat in the summer Answer: soft fruit
◉ What do Starlings eat in the winter? Answer: cattle feedlots
◉ Which is NOT a control for Klamath Weed? Answer: buprestid beetle
◉ Anargus epos is a parasite of grape leafhopper that attacks what life
stage? Answer: eggs
◉ The parasite Aphelinus mali is a parasite of woolly apple aphid, but is
also a parasite of what other insect? Answer: cotton aphid and apple
aphid
◉ A type of root knot nematode is found in a grape vineyard. What
information is needed for proper management? Answer: only that they
are root knot nematodes
,◉ How to manage vineyard once it is determined to have root knot
nematodes present? Answer: fallow ground for 4 years and precede
planting with grass crops like barely or sundagrass
◉ Best prevention of Pierces Disease Answer: resistant varieties
◉ Eutypa Dieback Management Answer: prune and remove dead wood
late in dormant season, remove and burn any infected wood in vineyard
and nearby
◉ Eutypa Dieback management when more advanced and suckers
attaching to lower trunk Answer: completely remove all cankers on vine
and trunks cutting until no darkened tissue remains
◉ Crown Gall Management Answer: sanitation and avoidance of injury
◉ What is important in the management of Powdery Mildew? Answer:
monitoring presence of spores, applying fungicide, and using the
Powdery Mildew Index (PMI)
◉ Management of Black Measles Answer: apply lime sulfur making
sure it gets into the cracks and crevices of the vine
◉ How to determine if the gall causing disease on alfalfa is caused by
root knot nematode Answer: rub off the nodules
, ◉ When can a hold be put on an apiary? Answer: when it is infested
with disease
◉ Which of the following is a noxious weed Answer: White Horsenettle
◉ Which chemical causes aerial distress displays and vocal distress call
and works as a flock frightening agent? Answer: Avitrol
◉ What is the most effective method for mole management? Answer:
kill traps
◉ Which is the best description of zinc phosphide? Answer: heavy,
finely ground black gray powder (also smells like powder)
◉ Which of the following is evidence of gopher activity? Answer:
crescent mounds (gopher activity is shown through crescent mounds)
◉ What kind of damage would be seen in an orchard if meadow vole
were present? Answer: gnawing at the bark
◉ What does volatile mean? Answer: a chemical that vaporizes at
normal temp and contact with air
◉ Owner has problem with ground squirrels on his property. What does
he need in order to use an anticoagulant on the pest? Answer: a bait that