INSECT MANAGEMENT IN GEORGIA HAYFIELDS DR. WILL HUDSON University of Georgia.
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Transcript of INSECT MANAGEMENT IN GEORGIA HAYFIELDS DR. WILL HUDSON University of Georgia.
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