What's New in Almond Pest Management

79 Pages·2011·4.17 MB·English

by  Michelle Norwood

What’s New in A lmond P es t Management
W hat’s New in A lmond
P es t Management
Moderator: Bob Curtis, ABC

Presenters:

Jim Adaskaveg, Plant Pathology, UC
Riverside

Frank Zalom, Entomology, UC Davis

Brand Hanson, Plant Sciences, UC Davis
Dis eas e Management Update
J.E. Adaskaveg
University of California, Riverside
Currently Registered
and New Fungicides for
Almond Production in
California
Development of New F ungic ides
for Managing A lmond Dis eas es
Single- fungicides - Inorganics and Conventional Synthetics
Inorganics Dithiocarbamates Phthalimides Isophthalonitriles Guanidines
Copper,
Ziram, Bravo, Echo, Syllit
Captan
Sulfur
M1 (Maneb) Equus M6
M2 M3 M4
1960s 1940s 1950s 1960s 1960s
Benzimidazoles Hydroxyanilides Sterol inhibitors (DMIs) SDHIs Anilinopyrimidines
Topsin - M,
Elevate Rally, Laredo, Orbit, Luna Privilege, Vangard,
T- Methyl Xemium,
1 17 Indar, Quash, Inspire Scala
Fontelis 9
1970s 1990s 7
3 1990s
1970s - 1980s 1960s
Dicarboximides Rovral,
Iprodione,
QoIs
Polyoxins
Nevado
2
Abound, Gem,
1980s
Ph- D
pyraclostrobin,
New in 2011: Fontelis, picoxystrobin
19
picoxystrobin
Unassigned to class: S2200, fenpyrazamine (V-10135), 1960s
IKF-5411 11 1990s
Multi- s ite mode of action Single- s ite mode of action Reduced risk fungicides
Development of New F ungic ides
for Managing A lmond Dis eas es
Conventional Synthetic Fungicides – Pre - mixtures
3 DMIs
Inspire Super
Inspire XT
3+3 3+9 7 SDHIs
Pristine
Adament
9 Anilinopyrimidines
Luna Sensation
Quadris Top
Merivon, Q8Y78
33++1111 Quilt Xcel 11 QoIs
7+11
Natural Products and Biocontrols
Regalia,
Natural products and a biocontrol that
Cerebrocide,
already are or potentially will be OMRI
Ph- D organic,
approved were evaluated for organic
Actinovate
farming of almonds.
Management of
S pringtime F oliar
Dis eas es of A lmond

Blossom Blight
and Shot Hole
E ffic ac y of F ungic ides
Brown rot:
• Numerous excellent treatments available
• Classes: DMIs (3), SDHIs (7), APs (9)
• Pre-mixtures of groups 3+11, 7+11, and 3+9
• New highly effective pre-mixtures: Luna Sensation,
Merivon, Inspire Super

Gray mold:
• Most effective treatments in the SDHIs (7) and APs (9)
• Effective pre-mixtures: 3+11, 7+11, and 3+9

Shot hole:
• Most effective: pre-mixtures of 7+11 and 3+11, rotation
treatments with 2 and M5 also effective
• Luna Sensation, Merivon, Inspire Super, Quadris Top,
Bravo, & Rovral with minimal applications and under
high-rainfall were effective
B rown R ot –
T iming of Treatments
20-30% 80%
Treatment cv. Butte,
bloom bloom
UC Davis
2-24-11 3-3-11
a
Control - -
Luna Sensation 5 fl oz @ - b
Luna Sensation 5 fl oz - @ c • A single application at full
Control - - a bloom was generally more
Merivon 6.8 fl oz @ - b effective than a single
Merivon 6.8 fl oz - @ b application at early bloom
Control - - a even when high rainfall
Quadris Top 14 fl oz @ - b occurred before full bloom.
Quadris Top 14 fl oz - @ c
Control - - a • In another trial on cv. Drake
(very high disease pressure),
Pristine 38WG 14.5 oz @ - b
Pristine 38WG 14.5 oz - @ c 2 applications (at pink bud
and full bloom) were more
0 10 20 30 40 50
effective than a single
Incidence (%)
Application x x
application (at full bloom
Date 2-20 2-24 3-3 3-8
only).
Precipitation (mm) 0 36.5 18.8
Natural Hos t
R es is tanc e A gains t
B rown R ot B los s om
B light and Other
S pringtime Dis eas es