An Integrated Pest Management Program for Turfgrass.

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Presentation transcript:

An Integrated Pest Management Program for Turfgrass

Purpose of IPM 3To reduce dependence on pesticides

The Actual Risks Smoking Alcoholic Beverages Motor Vehicles Handguns Electric Power MotorcyclesSwimmingSurgery/X-RaysRailroads/Aviation Large Construction BicyclesHunting Home Appliances Fire Fighting/Police Work Nuclear Power Power Mowers Scholastic Football SkiingVaccinations Food Preservatives PESTICIDES Spray Cans/Aerosol 1001,00010,000100,000 Number of Deaths Per Year

An IPM Program Emphasizes 3Adapted varieties 3Cultural practices 3Monitoring pest populations 3Targeting applications 3Detailed records

An IPM Program Emphasizes 3Biological control 3Resistant varieties

CulturalPractices

Environmental Conditions 3Temperature 3Wind 3Moisture

BrownpatchBrownpatch 3All grasses 375° - 85° F 3Moist

SeptemberOctober Brownpatch (%)Temperature Brownpatch vs. Temperature

October Brownpatch (%)Rainfall (inches) Brownpatch vs. Temperature

Detailed Records

Monitoring Pest Populations

Pesticide Application 3Product 3Date of Application 3Rate of Application

Chinch Bugs 3Favor lush St. Augustine lawns 3Prefer hot, dry area 3 Suck juices from plants 3Orange nymph does most damage 3When crushed, give pungent odor

Chinch bug damage in St. Augustinegrass

Life stages of the chinch bug from adult to nymph

White Grub 360 species 3Phyllophaga criteria most common 3Grubs chew on roots grubs per square foot 3Takes weeks for eggs to hatch 3Egg laying period of 30 days

White Grub (cont.) 33rd instar does most of the damage 3Overwinters in 3rd instar stage 3Control aimed at newly hatched grubs

White grubs in bluegrass

Sod webworms in St. Augustine

Sod webworm tunnels

Sod webworm

Sod Webworms 3Bermudagrass, Zoysiagrass & St. Augustinegrass

HelminthosporiumHelminthosporium 3Bermudagrass º F

Helminthosporium in bermudagrass

Dollar Spot 3Bermudagrass º F 3Wet foliage

Dollar spot in bermuda

Targeting Applications

ASONDJFMAMJJASO Months Winter Broadleaf Weeds Summer Broadleaf Weeds Poa Annua Crabgrass Weed Population Weed Control Programs

Biological Controls

Fall army worm

Fall Armyworms 3Favored by cool, wet weather 3Feed chiefly at night 3Defoliate plants 3Early damage, loss of chlorophyll

Resistant Varieties

Screening St. Augustine for chinch bug resistance

Purpose of IPM 3Reduce the need for pesticides