Insect and Frog Pest Control 11 th Hawaii MIDPAC Conference October 19, 2006 Hawaii Export Nursery Association Arnold Hara University of Hawaii at Manoa College of Tropical Agriculture & Human Resources 875 Komohana St. Hilo, Hawaii 96720 E-mail: [email protected]Website: http://www.ctahr.hawaii.edu/haraa/index.asp
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Insect and Frog Pest Control - University of Hawai»i
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Insect and Frog Pest Control11th Hawaii MIDPAC Conference
October 19, 2006 Hawaii Export Nursery Association
Arnold HaraUniversity of Hawaii at Manoa
College of Tropical Agriculture & Human Resources875 Komohana St. Hilo, Hawaii 96720
*An inter-island and inter-state quarantine pest.*Only effective treatment is Amdro bait insecticide.*Quarantine treatments are presently being evaluated:
-Talstar granular -Hot water drench-Talstar drench -Precise (Orthene) G
Chopstick w/peanut butteris very attracting to fire ant
IncorporatingTalstar G intomedia for fireant control
Test in Progress
Potting plants withTalstar incorporatedin media.
Hot Water DipAgainst LFA
Hot water dip tank Screened dish with withover 300 ants for testing
* Workers of LFA was effectively killed at 113 F(45 C) for 10 min.
*Test is needed using hot water drench on ant nestin potted pots.
Coqui Frog Controls1. Chemical
Citric acidHydrated LimePyrethrins
2. Non-ChemicalHeatPhysical BarrierElectric Fence
Research in collaboration with:Mr. Kyle Onuma, HDOA Mr. Brian Bushe, UH-CTAHR
Treatment Kill Eggs Kill Adults Safe onOrchids
Citric Acid – 16% yes yes
yes
Pyrethrin-24oz/100gal no 1 appl- paralysis2 appl- death yes
yes
yes
no
noyes w/rinse
Hydrated Lime – 3% yes yesheavy residue
Pyrethrin-24oz/100gal+ citric acid-8% yes yes?
yes w/rinse
Hot Water 113o F, 5 m yes yes/no
Cold 36-38o F for 6 h no no
Citric acid, Hydrated Lime, Pyrethrins,Cold & Hot Water Against Coqui Frogs
EFFICACY OF PYRETHRINS ON COQUI FROGSPYRETH-IT (6% pyrethrins: 60% piperonyl butoxide (1:10))
(Pyrenone, Pyronyl)Mortality of coqui frogs 12 hr after2nd application
0
10
20
30
40
50
60
70
80
90
100
16 oz 18 oz 20 oz 22 oz 24 oz
1st Application 2nd Application3 reps of 5 frogs 6 frogs 6 frogs 6 frogs 6 reps of 5 frogs
Rate per 100 gallons
(12 h between applications) Bushe 2006
Negative
Positive
Dead Coqui
Exclusion of Coqui Frogs by Electric Fence? *Dr. Max Goldberg, Physicist, HCEOC, demonstrated the
potential of delivering lethal electrical shock to coqui frogs.*Design an electric fence that could exclude coqui frogs.*Low impedance transformer for electric fences against large
animals was used.*Major issue was coqui frogs is not grounded when climbing
Physical Barrier for Coqui Frog Exclusion50 x 25 meshInsect poly screen+
90o Angle
Aluminum frame
*Credit to Mr. Kyle Onuma, HDOA for this invention.*Frogs can’t hang on horizontal screen against gravity.*Test will be conducted by surrounding a greenhouse
with this physical anti-gravity frog barrier.
Commercial Hot Shower System at Leilani NurseryWaimanalo, Hawaii
Open House at Leilani Nursery on October 25, 200610 AM 41-630 Kaulukanu St. Waimanalo
Effective Coqui Frog Controls? Star Bulletin Thinks So!