Post on 02-Oct-2020
Arthropod Pests of Pomegranate and Insights
into Management
Walt Bentley
Arthropods Found in California
Ants (Grey field, Argentine, Southern fire)
Cotton Aphid
Cherry Leafhopper
Citrus Flatmite
False Chinch Bug
Filbertworm
Katydid
Leafooted Plant bug
Grape mealybug
Navel orangeworm and Carob moth
Omnivorous leafrooler
Soft scales
Ash Whitefly
Monitoring and Thresholds
Monitoring based on other crops
Mealybug,Katydid, Omnivorous leafroller, Leaffooted plant bug, Navel orangeworm
Virtually no treatment thresholds
Again based on other crops
Important aspect is whether the crop is sold fresh or juice!
Management Strategies
Biological
Cultural/Physical
Santitaion
Pruning
Chemical
Insecticides
Bacillus thuringiensis (Dipel, Javelin, Deliver)
Methomyl (Lannate)
Success/Entrust
Neem (Trilogy)
Azadirachtin
Pyrethrum (Pyganic, Evergreen)
Buprofezin (Applaud
Sulfur (Dust and wettable
Imidacloprid (Provado, Admire)
Omnivorous
Leafroller
Omnivorous Leafroller
Omnivorous Leafroller Seasonal Flight
0
20
40
60
80
100
120
140
160
3/153/29
4/124/26
5/105/24
6/76/21
7/57/19
8/28/16
8/309/13
9/27
Mot
hs/
trap
/wee
k
Katydid Damage
Grape Mealybug
Grape Mealybug
Seasonal development of grape mealybug in California’s San Joaquin Valley
JanuaryDecember
November
October
September
August May
February
March
April
JuneJuly
Eggs and
1st within
sacs , much
mortality
Eggs and
1s t crawlers
within sacs
Eggs and
1st
crawler
within
sacs
Eggs and
1st
crawlers
within
sacsEggs and
1st
crawlers
1st moving,
some eggs ,
2nd instar
1st and 2nd ins tar,
male cocoons ,
females maturing
Mature females
and males Females
at cane
base
with
eggs
All
immature
s tages ,
bunch
infes tation,
males late
Heavy
infes tation,
males ,
females, eggs
All immatures on
bunches and wood,
old females dying
Under Bark
Bud Break
Bloom
Movement to
Base canes
Mealybug Development
The Arthropod Players
Formica aerata
Pseudococcus maritimus
Ascerophagus notativentis
False Chinch Bug
False Chinch Bug Habitat
Cotton/Melon Aphid
Ash
Whitefly
Leaffooted Plant Bug
Flat Mite
Navel
Orangeworm
Sources of NOW
Relationship Between NOW Egg Deposition and Infestation, Wasco, CA
0.3
19.2
4.5
4.8
0.5
0
5
10
15
20
25
4-Apr
15-A
pr
27-A
pr
11-M
ay
20-M
ay
31-M
ay
10-J
un
21-J
un1-
Jul
12-J
ul
22-J
ul
2-Aug
16-A
ug
26-A
ug
5-Sep
16-S
ep
26-S
ep
Eg
gs/t
rap
0
2
4
6
8
10
12
14
16
18
% I
nfe
ste
d (
50
0)
Filbert Worm
Soft Scal
e