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TURF INSECTS.

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Presentation on theme: "TURF INSECTS."— Presentation transcript:

1 TURF INSECTS

2 INSECT HABITATS Leaves and stems Aphids and mites

3 INSECT HABITATS Thatch Chinch bugs and Sod webworms

4 INSECT HABITATS Soil White grubs and Mole crickets

5 CONTROL Know insect Timing of application is important

6 CONTROL Healthy, competitive turf Avoid succulent growth Reduce thatch

7 CONTROL Endophytes: fungi symbiotic with turf repels insects
Currently, limited to cool-season turf Primarily tall fescue and ryegrass

8 CONTROL Insecticides Typically curative

9 SOUTHERN CHINCH BUG HOST: St. Augustine DAMAGE: suck juice from grass

10 SOUTHERN CHINCH BUG Hot, dry weather

11 SOUTHERN CHINCH BUG Reside in thatch

12 SOUTHERN CHINCH BUG SYMPTOM First water stressed
Most active at perimeter

13 SOUTHERN CHINCH BUG SAMPLING Flotation
Threshold: 25 to 30 per square foot

14 SOUTHERN CHINCH BUG CONTROL Resistant varieties

15 WHITE GRUBS AND BILLBUGS
White grubs: Larval stage of beetles May and June beetle, masked chafers, etc. Rarely a pest in Lowcountry

16

17 WHITE GRUBS AND BILLBUGS
Billbugs: larva of snout beetles (weevils)

18 WHITE GRUBS AND BILLBUGS
DAMAGE August Feed on roots just below surface Roll back dying turf like carpet Predator damage (skunks, moles)

19 WHITE GRUBS AND BILLBUGS
SAMPLING Strip one sq foot of turf Threshold White grubs: 3 to 4

20 WHITE GRUBS AND BILLBUGS
CONTROL Milky spore disease only controls one type of white grub Japanese beetle

21 CATERPILLARS Fall armyworm Sporadic pest in lawn
More common on golf course

22 CATERPILLARS Sod Webworm Much less common than armyworm

23 CATERPILLARS DAMAGE Eat foliage

24 CATERPILLARS SAMPLING Soapy flush: 1 oz of dishsoap / gallon

25 CATERPILLARS CONTROL Birds can be an indicator

26 MOLE CRICKETS Tawny and Southern are IMPORTED PESTS
Northern and Short winged are native

27

28 MOLE CRICKETS DAMAGE Eat roots Tunneling uproots turf Predator damage
Bermuda and bahia, but also centipede Tunneling uproots turf Predator damage

29 MOLE CRICKETS SAMPLING Soapy flush Threshold: 2 to 4 per sq ft

30 MOLE CRICKETS CONTROL Introducing natural predators (parasitic nematode, parasitic fly, fungus)

31 MOLES Searching for food

32 MOLES DAMAGE Tunnels mostly visual Minor damage to turf

33 MOLES CONTROL Look for active tunnel
Collapse and check back in a couple of hours Against concrete Spike trap kills ‘em dead

34 MOLES CONTROL Sonic Hair Hot peppers Caster oil (Mole-Med) Baits Gum
Other products

35 MOLES CONTROL Control food source?

36 Nematodes

37 Nematodes Host: Centipede, Bermuda

38 Nematodes Favorable Conditions: Sandy soil with a poor pH

39 Nematodes Symptoms Water stress Poor root system

40 Nematodes Control Requires soil test to ID Nematicide


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