Mites and stuff Flashcards
What class are Mites in?
Arachnida
How does webbing benefit spider mites?
- • Movement and dispersal
- • Maintains desirable humidity
- • Protection from predators
- • Protection from rain and wind
- • Barrier to miticide treatments
What are some factors that might promote mites?
- • Full sun
- • Warm to- hot temperatures
- • Dry weather
- • Low humidity
- • Excess nitrogen inputs
- • Use of certain insecticides
describe the gradual metamorphosis of mites:
- • egg
- • One six-legged larval stage
- • Two eight-legged nymph stages
- • Eight-legged adult
what are some symptoms that mites cause in plants?
- • Stipple
- • Bronze, yellow, or silvery discoloration
- • Damage on older growth or sunny side
- • Leaf and/or needle drop
- • Leaf twisting, curling, stunting
- • Galls
- • Erineum
what is a good tool to use to monitor mite populations?
Hand Lens
describe some monitoring techniques for nymph and adult Mites:
- • Nymphs / Adults
- Use “tap test” at 10% stipple
- Count the slow moving mites
- Consider any beneficial insects and mites
- Ten mites per tap threshold
What does nitrogen do to mite reproduction rates?
Stimulates reproduction rates
what ar esome chemicals to avoid using when trying to control mites?
- Carbamates
- Pyrethroids
- Neonicotinoids
What is the best option for managing small populations of mites?
Use soaps or oils
when using selective miticides, what is a major consideration to remember?
Save the Beneficial mites. Don’t kill the good mites
Name some of the Mite Predators:
- Other Mites
- Ladybugs
- Midge
- Minute Pirate Bugs
What is a fast way to determine if the disease is Downy Mildew or Powdery Mildew?
Look at the leaf….if the “Mildew” is on the top of the leaf, it’ probably Powdery Mildew, if it’s on the bottom of the leaf, it’s probably Downy Mildew
What is the difference in spore stages in microcylic and macrocylic rusts?
– Microcyclic rust has less than 5
– Macrocyclic rust has all five spore stages
