VegNet Vol. 11, No. 20.
On the WEB at: http://vegnet.osu.edu
If experiencing problems receiving this fax,
Call 614-292-3857
In This
Issue
1.
Agricultural Labor
2.
2004
3.
Fungicide Resistance Management
Agricultural Labor
Camp Workshops for Camp Operators by John Wargowsky,
Executive Director - Mid American Ag and Hort
Services, Inc. jwargows@ofbf.org
Ohio
State University Extension Ag and Hort Labor
Education Program and Mid American Ag and Hort
Services (MAAHS) are sponsoring a series of workshops in November and December
for those who own, operate or are considering the development of temporary
labor camps for agricultural and food processing workers. These workshops will
help camp operators to comply with applicable local, state and federal regulations
while providing a benefit that improves worker recruiting and retention
efforts.
These
workshops will be held:
New
labor camp manuals will be distributed at these meetings. An online version of
this manual will be available by mid-November at www.midamservices.org by clicking on
'Quick Ref' and then 'Checklists.'
"The
workshops provide an excellent opportunity for camp operators to interact with
state and federal camp inspectors away from the point of inspection,"
explained John Wargowsky, executive director of
MAAHS.
Additional
workshop presenters include staff with the Ohio Department of Health, US
Department of Labor - Wage & Hour Division, Ohio Department of Job and
Family Services and the Ohio Environmental Protection Agency. Other partners in
this educational effort include the Ohio Fruit Growers Society, Ohio Vegetable
and Potato Growers Association, Ohio Farm Bureau Federation and Ohio Nursery
and Landscape Association.
"We
are excited to provide this opportunity for
Those
wishing more information about attending a free workshop or obtaining a free
labor camp manual may contact MAAHS at 614-246-8286, maahs@ofbf.org or visit www.midamservices.org and click on
'events.'
2004
One
of the most important aspects of selecting sweet corn varieties for production
is to select those varieties which have good disease resistance to common
diseases that can adversely affect sweet corn production. Each year Dr. Jeralald Pataky and his team
evaluate hundreds of hybrids for their resistance to common sweet corn diseases.
A brief description of the report is in the next paragraph. Note, that this
year also includes hybrid reactions to three herbicides.
The
report includes the reactions of 378 hybrids to common rust (avirulent, D-virulent, and G-virulent populations),
Stewart’s wilt, NLB - race 0, race 1 and races 0 & 1, MDMV-A, SCMV,
southern leaf blight, and three herbicides (Accent, Callisto,
and Option) were assessed in 2004. Hopefully, the report is
self-explanatory, but if you have any questions, please contact Dr. Pataky. The report will be submitted to the 2004 edition of
the Midwestern Vegetable Variety Trial Report compiled at
How To Get The Report
1.The 2004 nursery report also is available via
the internet at www.sweetcorn.uiuc.edu
The
reports are also posted on the VegNet home page. Look
in the right column and scroll down just below the 2003 Research Reports: http://vegnet.osu.edu
2.
If you do not have internet access, I have copies of a PDF file that contains a
summary of the 2004
3.
Hard Copies:
If
you do not have internet access or email, I can print copies of these reports
and mail them to you. The reports are too large to fax. As mentioned above, the
reports will also be published in the 2004 Midwest Vegetable Variety Trial
Report which usually comes out in early December.
For
electronic or hard copies of the report, contact Bob Precheur,
Dr.
Pataky is also am in the process of up-dating the
sweet corn hybrid disease summary that includes diseases reactions of about 650
sweet corn hybrids based on reactions in our nurseries from 1984-2004. That
summary also will be available soon at: www.sweetcorn.uiuc.edu
Fungicide Resistance
Management
by Dr. Sally Miller
Fungicides
have been categorized into groups based on their mode of action against plant
pathogenic fungi. These groups are
numbered and contain all fungicides with similar modes of action, whether or
not they are in the same chemical class.
Pathogens that develop resistance to one fungicide in a group are likely
to be resistant to all fungicides in that group. Therefore, most label instructions for
fungicides at risk for resistance development require alternating such
fungicides with fungicides with a DIFFERENT mode of action. The Fungicide Group number is provided on the
label, and shown in the table below.
When deciding on which fungicides to use in alternation, choose
fungicides that are 1) effective against the diseases of concern and 2) have
different Fungicide Group numbers. Some
products are a mixture of fungicides from two different groups, e.g. Groups 11
& 27 (Tanos); Groups 9 & 12 (Switch) and
Groups 7& 11 (Pristine).
Nonetheless, label instructions for these products require alternation
with additional fungicides.
Fungicide Group number and risk of resistance
development for some fungicides commonly used in vegetable disease management. Adapted from FRAC Fungicide List (1) (2003) (http://www.frac.info/publications/frac_list02.html). Not all fungicides labeled for use on vegetables
are included.
|
Fungicide
Group Number |
Group
Name |
Product
Examples |
Risk
of Resistance Development |
Resistance
Management Required |
|
1 |
Methyl
Benzimidazole Carbamates |
Topsin M |
High |
Yes |
|
2 |
Dicarboximides |
Rovral Ronilan |
Medium to High |
Yes |
|
3 |
De-Methylation Inhibitors |
Nova Tilt |
Medium |
Yes |
|
4 |
Phenylamides |
Ridomil Gold Apron |
High |
Yes |
|
7 |
Carboxamides |
Endura |
Medium |
Yes* |
|
8 |
|
|
|
|
|
9 |
Anilinopyrimidines |
Vangard |
Medium |
Yes |
|
10 |
|
|
|
|
|
11 |
Quinone Outside Inhibitors |
Quadris Amistar Cabrio Sovran |
High |
Yes |
|
12 |
Phynylpyrroles |
Maxim |
Low to Medium |
Yes |