INSECT MANAGEMENT IN INSECT MANAGEMENT IN GEORGIA HAYFIELDSGEORGIA HAYFIELDS

DR. WILL HUDSONDR. WILL HUDSON

University of GeorgiaUniversity of Georgia

ArmywormsArmyworms

FALL ARMYWORMSFALL ARMYWORMS

ADULTS - MOTHADULTS - MOTHEGGS LAID IN EGGS LAID IN MASSMASSGENERATION - 28 GENERATION - 28 DAYSDAYSOVERWINTERS IN OVERWINTERS IN FL.FL.DRY SUMMERS DRY SUMMERS OFTEN WORSEOFTEN WORSE

ARMYWORMSARMYWORMS

SYMPTOMS: GRASS SYMPTOMS: GRASS BLADES EATENBLADES EATEN

THRESHOLD: VARIES THRESHOLD: VARIES WITH SIZE AND WITH SIZE AND WEATHERWEATHER

TREATMENT: TREATMENT: CONFIRM, CONFIRM, PYRETHROIDS, PYRETHROIDS, SEVIN, OR DIMILINSEVIN, OR DIMILIN

CORAGEN IS GOLD CORAGEN IS GOLD STANDARD ($$$)STANDARD ($$$)

WHITE GRUBSWHITE GRUBSADULTS ARE BEETLESADULTS ARE BEETLES

ONE GENERATION PER ONE GENERATION PER YEAR (MOST)YEAR (MOST)

MORE SEVERE WHEN MORE SEVERE WHEN USING CHICKEN USING CHICKEN LITTERLITTER

PREFER NON-PREFER NON-ENDOPHYTE FESCUES, ENDOPHYTE FESCUES, ANY WARM-SEASON ANY WARM-SEASON GRASSGRASS

WHITE GRUB CONTROLWHITE GRUB CONTROL

IDENTIFY SPECIESIDENTIFY SPECIES

SEVIN OR SEVIN OR PYRETHROIDS FOR PYRETHROIDS FOR GREEN JUNE GREEN JUNE BEETLEBEETLE

OTHERS- OTHERS- COMPLETE COMPLETE RENOVATION AND RENOVATION AND REPLANTINGREPLANTING

Sugarcane BeetleSugarcane Beetle

Adults present Adults present from late April from late April through July or through July or later.later.

Grubs feed on Grubs feed on organic matter, like organic matter, like GJBGJB

Problems only in Problems only in drought yearsdrought years

Bermudagrass stem maggotBermudagrass stem maggotAtherigona reversuraAtherigona reversura

First found in 2010First found in 2010

Georgia is first Georgia is first place in western place in western hemisphere to hemisphere to have BSMhave BSM

Maggot chews Maggot chews stem at the first stem at the first node, killing the node, killing the last 2 leaveslast 2 leaves

Bermudagrass stem maggotBermudagrass stem maggot

Photo by S. Carlson

Photo by L. Wiggins

BSM DamageBSM Damage

BSM DamageBSM Damage

Photo by S. Carlson

BSM CONTROLBSM CONTROL

Preliminary results Preliminary results show pyrethroids show pyrethroids are effectiveare effective

Timing is importantTiming is important– Treat after Treat after

cutting/balingcutting/baling

May require May require second applicationsecond application

FIRE ANTSFIRE ANTS

NUISANCE PESTNUISANCE PEST

TREATMENTS MAY TREATMENTS MAY INCREASE INCREASE POPULATIONPOPULATION

TOTAL MOUND TOTAL MOUND TIME ABOUT 6 TIME ABOUT 6 MONTHSMONTHS

Fire ant moundFire ant mound

Fire ants swarmingFire ants swarming

FIRE ANTSFIRE ANTSCONTROL OPTIONSCONTROL OPTIONS

BAITSBAITS– AMDRO - AT 1.0 TO 1.5 LBS/ACAMDRO - AT 1.0 TO 1.5 LBS/AC– CONSERVE - AT 1.0 TO 1.5 LBS./ACCONSERVE - AT 1.0 TO 1.5 LBS./AC– EXTINGUISH AT 1.0 - 1.5 LBS./ACEXTINGUISH AT 1.0 - 1.5 LBS./AC

MOUND TREATMENTSMOUND TREATMENTS– ORTHENEORTHENE– PYRETHROIDSPYRETHROIDS