red palm weevil notes dan gerling tel aviv university 30 … · 2019-07-18 · dates and palm trees...
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Red Palm Weevil notes
Dan Gerling
Tel Aviv University
30 November 2010
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Dates and palm trees
• In the Middle East dates are an important food item bearing cultural and religious significance (mentioned in the bible, the Koran and the New Testament).
• Palm trees are very wide spread as ornamentals and fruit bearing trees. The latter are only in part of the range-the hotter climate regions.
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The region
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RPW: Life cycle
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Established treesoffshoots
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distribution
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• Infested trees can be cured • the main mode of distribution is by offshoot
dissemination• The RPW is a particular pest.
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Detection is a key to management
lack of care results in tree loss (0ver a million lost since the pest entered the Middle East)
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Trapping
~4000 traps were employed
Pheromone*ferrugineol-based + food bait + ethyl Acetate
*4-methyl-5-nonanol
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sniffing Listening
on-tree detection
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Initially: The Peres Center
Cooperation and division of labor within Israel:
taken over by growers and ministry of Agriculture
Trap improvement, insecticide efficacy, detection through sound taken over by ARO personnel.
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RPW: Activities of the PCP
• Establish a trapping – monitoring system• Capacity building -establish laboratories for
diagnostic and educational purposes. • Implement a management system according to
the findings. • Set up a collaborative network of the parties
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0
100
200
300
400
500
600
700
1 15 29 43 57 71 85 99 113127
141155
169 זמן (ימים)
מגון
ומפר
הית
ארש
051015202530354045
יתמל
סימק
remaining pheromoneTDmax °C
Residual activity of Cyhalothrin on date trunk fibersSurvival of adults
in-% Residual quantity in-
ppmDays from
application02.3±0.10
NT1.4±0.9835
0NT60
02.0±1.44175
Pheromone retention studies
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Dynamics of systemic pesticides
Leaflets
Stem
Roots
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Confidur per
application
Time after treatm
ent (days)
# Trees
Amount of Imidocloprid in mg per kg sample
LeafletsStemRootsTotal
2 ml
9116.55.56.718.7
12910.970.071.94.0*
19011.052.53.67.2
25221.00.31.83.0
4 ml
91157.612.454.670
12912.011.515.513.5*
190111.11.81224.9
252211.20.24.215.6
0 ml40.40.40.61.4
Time dependent distribution of Imidacloprid in young potted dates
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Jan Feb March Apr May June Jul Aug Sept Oct Nov Dec
Month
0
10
20
30
40
50
60
70
80N
umbe
r of c
atch
es/m
onth
Total RPW trap catches for Israel1999-2002
1999 2000 2001 2002
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Jan Feb March Apr May June Jul Aug Sept Oct Nov Dec
month
0
10
20
30
40
50
60
70N
umbe
r of c
atch
es/m
onth
Total RPW catches for Jordan1999-2001
1999 2000 2001
Trapping started June 1999
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2003 2004year
0
10
20N
umbe
r of t
rees
RPW in Jordaninfested and cured trees
13
4
infested trees
9
2
cured trees
2003 : Jan -Dec.2004: Jan - July
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RPW: Activities of the PCP
• Establish a trapping – monitoring system• Establish laboratories for diagnostic and
educational purposes. • Implement a management system according to
the findings. • Set up a collaborative network of the parties
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The Delegation from Jordan visiting Israel to observe RPW-associated
problems on both sides of the borde
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Staff members of Suez Canal University Faculty of agriculture,
June 2002 in a RPW training course
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Palm trees as ornamentals
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Thank you