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- Mercer, Kristin L.; Jordan, Nicholas R.; Wyse, Donald L.; Shaw, Ruth G.
- Weed science 2002 v.50 no.5 pp. 677-685
- Avena sativa; Elymus repens subsp. repens; Glycine max; Zea mays; arable soils; control methods; corn; evolution; farming systems; genetic variation; hay; oats; pastures; perennials; principal component analysis; risk; soybeans; weed control; weeds; Minnesota
- ... The genetic variation of quackgrass as a species and the array of environments in which it is found indicate that selection in these different environments could lead to differentiation among quackgrass populations. Yet, a highly diverse environment might not promote the genetic divergence of quackgrass if it poses contradictory selection pressures. To assess the extent of divergence among quackgr ...
- Swanton, Clarence J.; Shrestha, Anil; Clements, David R.; Booth, Barbara D.; Chandler, Kevin
- Weed science 2002 v.50 no.4 pp. 504-511
- Glycine max; MCPA (herbicide); MCPB (herbicide); Triticum aestivum; Zea mays; control methods; corn; crop rotation; crop yield; crops; farming systems; glyphosate; growing season; imazethapyr; income; integrated weed management; interrow tillage; linuron; management systems; metolachlor; no-tillage; postemergent weed control; soybeans; weeds; winter wheat; Canada
- ... A 9-yr (1990––1998) study was conducted at Woodstock, ON, Canada, to evaluate weed densities, crop yields, and gross returns in a modified no-tillage (no primary tillage) corn––soybean––winter wheat rotation under three weed management treatments: (1) minimum, preplant application of glyphosate followed by mechanical control; (2) integrated weed management (IWM), preplant application of glyphosate ...