White Grubs Flashcards
What are the Scarab family spot ID characteristics?
- Spade-like tibia
- Lamellate club antennae
Scarab Feeding Injury
describe the primary and secondary damage that they do….
• Primary damage
– Feeding on roots near soil surface
– Kills grass outright
– Predisposes turf to environmental stress
• Secondary damage
– Vertebrate predators foraging for grubs (skunks and shit)
What do Scarabs feed on, besides roots?
Other organic matter in the soil
What do Japanese beetles do to plant leaves?
Skeletonize them
What is the range for Preventative-Early Curative Timing for Japanese Beetle?
How about Traditional Control timing?
Begin mid May and end in mid August
Mid July to the end of August
For curative control of white grubs….what product works best? Why?
- Dylox
- When watered in, It gets down through the thatch and into the soil where the grubs are. other products dont penetrate the turf very well
when do you want to target white grubs??
Mid-August….during early instars when they are babies.
kill the babies
What is the irrigation tactic to getting the best control when using chemicals against white grubs?
Irrigate before application to get grubs to move to the target zone…..irrigate after application to get product into target zone.
Kill !!!!
Why does it matter if there is heavy thatch in the area you want to treat forwhite grubs?
It makes it hard for the product to move through it to get to the target zone to kill the enemy.
What are important concepts to consider for preventative control of white grubs?
- – Monitor peak adult flight
- – Target “hot spots”
- – Choose long residual material
What is an effective alternatives to pesticides to control White Grubs?
- Turn off water.
- females wont lay eggs if soil moisture isn’t right. Eggs wont hatch if soil moisture isn’t right.
-
Entomopathogenic Nematodes
- Works really well!!
- Best option
