An Integrated Pest Management Program for Turfgrass

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White Grub

• 60 species
• Phyllophaga criteria most common
• Grubs chew on roots
• 4 - 5 grubs per square foot
• Takes 3 - 4 weeks for eggs to hatch
• Egg laying period of 30 days

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White Grub (cont.)

• 3rd instar does most of the damage
• Overwinters in 3rd instar stage
• Control aimed at newly hatched grubs

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White grubs in bluegrass
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Insecticides - Contact
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Sod webworms in St. Augustine
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Sod webworm tunnels
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Sod webworm
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Sod Webworms

• Bermudagrass, Zoysiagrass St. Augustinegrass

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Helminthosporium

• Bermudagrass
• 70 - 80º F

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Helminthosporium in bermudagrass
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Helminthosporium in bermudagrass
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Dollar Spot

• Bermudagrass
• 60 - 80º F
• Wet foliage

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Dollar spot in bermuda
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TargetingApplications
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Weed Control Programs
Weed Population
10 8 6 4 2 0
Winter Broadleaf Weeds
Summer Broadleaf Weeds
Crabgrass
Poa Annua
A S O N D J F M A M J J A S O Months
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Biological Controls
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Fall army worm
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Fall Armyworms

• Favored by cool, wet weather
• Feed chiefly at night
• Defoliate plants
• Early damage, loss of chlorophyll

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ResistantVarieties
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Screening St. Augustine for chinch bug resistance
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Purpose of IPM

• Reduce the need for pesticides