Test 3 Flashcards
….4 most common orders of TG pests
Orthoptera
Homoptera & Hemiptera
Coleoptra
Lepidoptera
___ is the most important aspect to control TG pests
identification
Sampling provides 2 pieces of info:
- predicts pest problems
- quantifies damage and helps decide about chemical control
___ are responsible for major turf damage every year
key pests
___ are high risk areas due to grass type, exposure, & soil characteristics
key locations
2 methods of MONITORING pest populations
- visual inspection techniques
- passive techniques
Visual Inspection Techniques (list)
- spot sampling
- irritant sampling
- flotation
spot sampling:
visually inspect turfgrass
- make sure that thatch is under control
irritant sampling:
uses flushing agents (soaps, insecticides)
- requires thorough soaking
- thatch control is important
Flotation:
- push cylinder into thatch, add water until it says for a few seconds, pest will be on top
- count for both pests and predators
- most common for chinch bugs
- very acurate
- takes time
to sample for insects in the soil
spade at surface and count
Passive techniques for sampling (list)
- blacklight traps
- pheremone traps
- flor-a-lure traps
- pitfall traps
when developing IPM program, know:
- all inputs that are required to produce & maintain healthy turf
- life cycle of pest
- how to ID pest correctly
- that damage is from pest, and not other
- monitoring system for pests and weather
- how to keep careful records
- what you will use for control
- how effective was a chemical on a certain pest
***record keeping***
Bermudagrass Mite
Preferred TG
bermuda
bermudagrass mite
damage
feed on epidermal cells
- h2o and nutrient stress
bermudagrass mite
symptoms
yellowing at tip, moving down blade
tufting and rosetting
bermudagrass mite
control
cultural
microbial
chemical
Mole Crickets
preferred TG
bahia and bermuda
Mole Crickets
damage
feed and tunnel
eat and destroy root system
Mole Crickets
symptoms
wilting
quick dieback
damage from foot and cart traffic
Mole Crickets
control
biological
chemical
Chinch bugs
preferred TG
Hairy chinch bug: bluegrass, bentgrass, fescues
Southern Chinch Bug: St. Augustine, Centipede, Zoysia
Chinch bugs
damage
peircing and sucking mouthparts feed on plant sap
water and nutrient stress
Chinch bugs
symptoms
yellowing to red/brown color
looks like sun scauld
Chinch bugs
control
HPR
cultural
chemical
Green Bug
preferred TG
North: bentgrass and fescue
South: Bermudagrass and centipede
Green Bug
damage
peircing and sucking mouthparts feed on phloem
cements to stem to feed, cement remains
toxins in saliva
Green Bug
symptoms
yellow spots and orange color
Green Bug
control
HPR
chemical
Two-Lined Spittlebug
preferred TG
bermuda
centipede
St. Augustine
Two-Lined Spittlebug
damage
P&S extract h2o and nutrients in large amounts
lot of water used to maintain spittle
feeds in xylem and around crown
injects toxin
Two-Lined Spittlebug
symptoms
wilting and dieback
toxin causes streaking/stippling