|Buhler, Douglas - Doug|
Submitted to: Weed Science Society of America Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 4/10/1996
Publication Date: N/A
Citation: N/A Interpretive Summary:
Technical Abstract: The NC-202 Regional Research Committee sponsored a regional research project to determine the timing of seedling emergence of important Corn Belt weeds. Cumulative seedling emergence (CE) of each of several weed species was monitored at weekly intervals during spring and summer in replicated permanent quadrants at Morris and Rosemount, MN (1990 to 1994), Akron, CO (1993-94), Columbia, MO (1993-94), Scottsbluff, NE (1993-94), Urbana, IL (1990-91) Wooster, OH (1994), Ames, IA (1990, 1993), and Kirksville, MO (1990). Daily air temperature, soil temperature (5 to 10 cm depth), and precipitation were recorded. These micrometeorological data were used to calculate cumulative growing degree days and daily soil water potential at 5 to 10 cm depth at each site. Distinct relationships between CE and simple micrometeorological data occurred for many species. For other species, more complex emergence models were necessary to predict the timing gof emergence. All data will be available to interested individuals through the NC-202 Home Page (World Wide Web) based at Iowa State University.