Document 5L9VZ02kJXZavvZQ5MDXX71Lz
Managing Burrowing Rodents in Specialty Crops--What's New?
Roger A. Baldwin
UCCE Wildlife Specialist Department o f Wildlife, Fish, & Conservation Biology
University o f California, Davis
Carbon Monoxide Machines
Legalized in CA since January 1. 2012.
Potential advantages for CO: - Safer for use - Multiple applications
Will now be regulated by CDPR.
Carbon Monoxide Machines
S p e c ie s
Pocket gopher Pocket gopher Pocket gopher Holding's ( jS California (iS California CiS California GS
l)e\ ice Pl-RC Pl-RC
p i -:r c
Pl-RC
p i :r c
Pl-RC Cheetah
.Authors
# o f H elds
fT ficacs
Orloff
Baldwin & Orioli'
Baldwin & Orlotr
Orloff
56 o
M
W
^M M ^M
MMMMMIllllllllllllllBBIBllllllllllllllll
Baldwin
M
W
Baldwin
^ M M I^ M
or-i
Baldwin
ED 002061 00043309-00003
chnique Comparison-CA GS
CA GS Cost afld Efficacy Comparison
CosL'acrti
PERC
Gas Cartridge
Ai Ph
0-01% Oiph
PERC (~3-m in app) = P E R C (~6-min app) **>*A lum inum phosphide ^ ^ " Gas cartridge
0 100 200 300 400 500 600 700 800 900 1000 1100 1200
Application days
ED 002061 00043309-00004
Trapping-
- Gophinator trap was more effective than Macabee trap.
- Captured heavier gophers at a greater rate.
1 'S #S-
Trapping-
Pocket gophers
- Modified Macabee increased capture success when compared to standard Macabee. but still underperformed when compared to the Gophinator.
ED 002061 00043309-00006
- Covered sets yielded slightly higher capture rates in spring-summer, but not autumn.
- Efficacy was offset by setting time.
- We did not observe a difference in the number of captures across attractants.
- 11uman scent had no effect.
Pocket gophers
- Exhibited high efficacy in wine grapes after two treatments.
- Exhibited high efficacy in alfalfa after two treatments.
ED 002061 00043309-00008
Pocket Gopher Rodenticides
Product Control
111B B B W IMllMlillBMMlliilMlMlMlMlMlMlMlMlMlMlMlMllll
l<C< ?!:ii!h'l
Ai Maintenance diet i.lii-.'.rop.hacm-.'.iicOh .PCs Clilohip.hacmoiic iO.im=5"o= Uiph.ian-SK.' ;i:'5;Oy,, ;
Carrier S. Rosa
Pala
lotal
Rat chow
1 10
0 10
5,,
liaipnnn
\Wien! -jiain
K!!h:l.:1-!!!1 mmmmmmmmmm 0/5 llMlMllMlMlMlMlMlMlMlMlMlllliilMlMlMlMlMlMlMlMlMlMlMll
ill
IIIMIIIIIMIMIMIMIMIMIIIIMIMIMIMIMIMIMIMIMIMIMIllBlBllBlBlBlBlBlBlBlBllliiBlBlBlBlBlBlBlBlBllll
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiBiiliiiiiifcBiiiliMBiiiBiiiiiiiiiliiiiiiiiiiiiiiiiiiiiiiiiiiiii
IIIIIIIIIIIIIIIIIIIIIIWIIIIIIIIIIIIIIIIIIIIIIIII
ili iilli
llllllliliiiMilMIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
IIIIIIIIIIIIIIIIIIIMBlMlIlMIMilBlIlllllllllllllj
... 111!...
IIIIIlHiiiWlIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
iiiiiiiiiiiiiiiiiiiiiiiiiiIiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
(((BHIl
Cholecalcilerol (0.0`75,,<) lllllllllllllllllllllllllliMlllMllllllllllllllllllllllj
iiiiiilllllllllllliiiiiiiiiiiBBliiliiiiiiiiiill
ED 002061 00043309-00009
Pocket Gopher Rodenticides
HO",
1111
Application 2
ED 002061 00043309-00010
Control Options--Comparisons
Trapping and aluminum phosphide were most effective for gophers.
100 00 HO 70 cc 60
J 50
5 40 50 20
10 0
Session I Session 2 Session 5
Conlrol
H
H
PI RC
H
H
Al Pli
H
Trnppin
ED 002061 00043309-00011
ED 002061 00043309-00012
Options--Repellents
Repellents
- rely on objectionable odors or unpleasant tastes/responses. - commonly available but none proven effective. - anthraquinone may show some promise.
ED 002061 00043309-00013
Options--Repellents
lllllllMV \>w L 'I lr 1^...^ I I 1. 1 1 i f \ 1 ! W`
\..^i 1 1. ^XvI I
1
1 1^1 *wn, : W*
- vegetation: 0.05 cm2, no vegetation: 0 cm2: P = 0.059
Rem oval o f vegetation by itself did not reduce damage - vegetation: 0.53 cm2, no vegetation: 0.37 cm2; P = 0.143
iiiiiiiiiiii
'= t'ontrol-X eg
I
( ontrol-No You
Anihiatjuimme-Veg XnLtmiqiitnoiie-Ni Veg ED 002061 00043309-00014
