Resources for Weed Management
- Weedinfo.ca: If you are trying to identify
a weed, find the newest information on herbicide resistance and
other emerging issues in weed management you need to visit weedinfo.ca.
- Provincial Weed
Crop IPM: Know how and why it is important to scout
and identify weeds, as well as diagnose herbicide injury.
Symptomology Photo Repository (UC IPM): Identifying
nontarget crop and ornamental plant damage from herbicides has
become much easier, with the launch of this new online photo repository
developed by using nearly a thousand photos of herbicide-damaged
plants. The images are catalogued to show damage that can occur
from 81 herbicides in more than 14 specific herbicide modes of
action, applied in field to demonstrate the symptoms or when known
herbicide spray has drifted onto the plant. Each image is characterized
with the name of the plant, mode of action of the herbicide, and
notes the specific symptoms of damage. Together these photos provide
a comprehensive archive of damage to over 120 different crops
and ornamental plants by known herbicides, which users can easily
compare with what they see in the field.
Injury Symptoms in Tomatoes PPI and PRE Herbicides
Injury Symptoms in Tomatoes Postemergence Herbicides
Control in Tomatoes and Peppers
- WeedPro 75.
For Corn, Soybean and Wheat herbicides. Weed Pro 75 is your online
herbicide selection tool that puts profitability and environmental
safety first. Input basic field information along with the different
weed species found in each field and an estimation of how heavy
an infestation (density) of each species in that field. Registered
herbicides that are effective on the indicated weed spectrum are
then listed by most profitable treatments. You can sort the results
in multiple ways including environmental impact. Then click the
desired treatment name for rates, precautions, and other product
- Weed Science Society of America
- Sprayers 101.
Sprayers 101 describes best practices in the safe, efficient and
effective operation of agricultural sprayers:
Control Act Legislation
Resistant Weed Maps: Stay up-to-date on where herbicide
resistant weeds have been identified in Ontario with maps and
a searchable Master table of all herbicide resistant weed species
in Ontario by County and Herbicide Group.
ID Guide for Ontario Crops. 2017. (For order or download)
- Ontario Weeds, Publication 505, Ontario Ministry
of Agriculture, Food and Rural Affairs, by Professor Jack Alex,
University of Guelph, 1992. 304 pages. $15.00. To order, call:
1-800-668-9938 or see Products
and Services on website. Currently out of print.
- Guide to
Weed Control, Publication 75, Ontario
Ministry of Agriculture, Food and Rural Affairs. $20.00 + tax.
Publications website or call ServiceOntario Publications Contact
Centre at: 1-800-668-9938 or OMAFRA Resource Centres.
- Identification Guide to the Weeds of Quebec,
Publication VT 007, by Claude Bouchard and Romain Neron, 1999,
ISBN 2-89457-174-7, 264 pages. To order: Distribution de livres
UNIVERS, 845, rue Marie-Victorin, Saint-Nicholas, Quebec, G7A
3S8, (418) 831-7474 or 1-800-859-7474; fax (418) 831-4021, firstname.lastname@example.org,
$16 + S&H. French version also available.
- Weeds of Canada and the Northern United States,
by France Royer and Richard Dickenson, University of Alberta Press
and Lone Pine Publishing, 141 Athabasca Hall, Edmonton, Alberta,
Canada T6G 2E8, paperback, 434 pages, 750 colour photographs and
150 line drawings, 1999 $29.95.
- Weeds of the Northeast, by Richard H. Uva,
Joseph C. Neal, and Joseph M. DiTomaso, Published by Comstock
Publishing Associates/ Cornell University Press, Sage House, 512
East State Street, Ithaca, New York, 14850, 1997, paperback, ISBN
0-8014-8334-4, 397 pages, includes 299 weeds.
in the Field: A Farmer's Guide to Weed Management Tools,
edited by Greg Bowman, 1997. Discusses history of herbicide use
and concurrent decline in knowledge about weed management tools.
Describes techniques of using a variety of cultivation tools while
minimizing erosion and soil compaction. Presents case studies
of weed management systems used by farmers throughout U.S., including
small and large farmers growing agronomic, horticultural and dryland
crops. Includes detailed drawings and explanations of many tools,
including hoes, cultivators, flamers and guidance systems. 128
pp. US $18. Sustainable Agriculture Publications, Hills Bldg.,
University of Vermont, Burlington, VT 05405-0082; phone (802)
656-0471; email email@example.com.
- Weed Seedling Guide, Alberta Agriculture, Food
and Rural Development, 1996 62 page booklet, spiral bound field
guide with photos and descriptions of 50 seedling broadleaf and
- Common Weed Seedlings
of The United States and Canada, produced by the Weed Society
Weed Seedlings of the North Central States, NCRE
Publication 607, by Andrew J. Chomas, James J. Kells and J. Boyd
Carey, Dept. of Crop & Soil Science, Michigan State University,
Bulletin Office, 10-B Ag. Hall, East Lansing Michigan, 48824-1039,
(517) 355-0240, Email: firstname.lastname@example.org,
paperback, 21 pages, 1998, $2.00 US .
- The Biology of Canadian Weeds, Publications
1693 & 1765, Edited and compiled by Gerald A. Mulligan, Communications
Branch, Agriculture and Agrifood Canada, Ottawa K1A 0C7, 1979
& 1984, paperback, 380 & 415 pages.
- The Biology of Canadian Weeds, Contributions
62 to 83, Edited and compiled by P. B. Cavers, Department of Biology,
University of Western Ontario, London, Ontario, ©1995 by
the Agriculture Institute of Canada, paperback, 338 pages.
- The Biology of Canadian Weeds, Contributions
103 to 129, Edited and compiled by P. B. Cavers, Department of
Biology, University of Western Ontario, London, Ontario, ©2005
by the Agriculture Institute of Canada, paperback, 516 pages.
- Peterson Field Guide to Wildflowers by Roger
Tory Peterson and Margaret McKenney. Available from most bookstores,
this is a good pictorial guide to identification and includes
some species not commonly found in agriculture but similarly may
not include all agricultural weeds.
- Weeds of California (and other Western States)
Joseph DiTomaso and Evelyn A. Healy, ©2007. A 2-volume reference
book is a practical, easy-to-use guide to the identification and
biology of over 700 terrestrial weeds. Included are full descriptions,
colour photographs, shortcut identification tables, and identification
keys. University of California, Agriculture and Natural Resources,
Publication 3488. Order from Communication Services, 6701 San
Pablo avenue, 2nd Floor, Oakland California 94608-1239. 1-800-994-8849
- Visit YouTube for weed
management and identification videos.
For more information:
Toll Free: 1-877-424-1300