Weed ecology and management. Martha Rosemeyer Ecological Agriculture November 4, 2003. Sustainable Agriculture. Three attributes: Economically viable, environmentally sound, socially just An integrated system including: natural resources: land/soil, crops, animals, climate
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Weed ecology and management
November 4, 2003
WEEDS ARE THE GREATEST BIOLOGICAL CHALLENGE TO AGRICULTURAL PRODUCTION, WHETHER CONVENTIONAL OR ORGANIC!
Labor 40-70% labor in traditional systems or herbicides to remove weeds
Good foundation for developing the
of more complex ecosystems”
Fallow= field not planted to a crop
Field bindweed, (Convulvulus
arvensis), Morningglory Family
From: Beeby, J. 1997.
Brassica nigraStellaria media
A plant that completes its life cycle in two years above ground
Examples are wild carrot (Daucus spp.), bull thistle (Circium vulgare) and poison hemlock (Conium maculatum)
Wild carrot is a host of leafhopper-vectored
aster yellows phytoplasma
Broadleaf plantain, (Plantago
Crop Rotation effects on weeds
Warn season weeds
Cool season weeds
endo. disruptor, ground water
poss. carcinogen; sus. endo. disruptor,
potential ground water contaminant
Theo Colborne, 1987. Our Stolen Future.
Impt to have
Can use propane
gas tank on small scale
cabbage or cole crop
ie not widely used,
unlike diseases of insects