WSET Diploma D1 Hazard and Pests | | Questions with Correct
Answers and Answers with Verified Solutions | Latest 2026 Update
Q: how can grape moths be managed?
Answer:
- the bacterium Bacillus thuringiensis (which produces substances that are toxic to
the moths) use of pheromone capsules to disrupt mating ('sexual confusion') natural
predators (parasitic wasps, green lacewings, some spider species) insecticides what is
the scientific name of powdery mildew? Erysiphe necator aka Oidium tuckeri which
common varieties are particularly prone to powdery mildew? which are not? -
Chardonnay, Cabernet Pinot, Riesling where is powdery mildew during the winter? n
buds, on canes what does powdery mildew attack? young green parts of vines what
does powdery mildew look like? - starts as dull grey patches that become black
patches as they advance patches can damage young shoots, inflorescences and
grapes, reducing yield grapes can split at véraison and become targets for other
infections what determines the growth rate of powdery mildew? Temperature,
optimal around 25C what conditions are favorable to powdery mildew? - optimal
temperature (25C)
Answers and Answers with Verified Solutions | Latest 2026 Update
Q: how can grape moths be managed?
Answer:
- the bacterium Bacillus thuringiensis (which produces substances that are toxic to
the moths) use of pheromone capsules to disrupt mating ('sexual confusion') natural
predators (parasitic wasps, green lacewings, some spider species) insecticides what is
the scientific name of powdery mildew? Erysiphe necator aka Oidium tuckeri which
common varieties are particularly prone to powdery mildew? which are not? -
Chardonnay, Cabernet Pinot, Riesling where is powdery mildew during the winter? n
buds, on canes what does powdery mildew attack? young green parts of vines what
does powdery mildew look like? - starts as dull grey patches that become black
patches as they advance patches can damage young shoots, inflorescences and
grapes, reducing yield grapes can split at véraison and become targets for other
infections what determines the growth rate of powdery mildew? Temperature,
optimal around 25C what conditions are favorable to powdery mildew? - optimal
temperature (25C)
