Weed Ecology and Biology

Lanceleaf Sage Competition with Hard Red Spring Wheat and Soybean.  Mathew G. Carlson and Kirk Howatt. (20)

Growth Analysis of Giant Chickweed (Myosotan aquaticum) in Alfalfa.  Scott Bollman and Michael P. Crotser. (21)

Glue Retains Seeds in Shatter-Prone Weed Seedheads. Gary Amundson, Ebandro Uscanga, and Frank Forcella. (22)

Emergence Date Affects Growth and Fecundity of Pigweeds (Amaranthus spp.). Ebandro Uscanga, Frank Forcella, and Jeff Gunsolus. (23)

Site Property Variation Influences Velvetleaf Response to Soil-Applied Herbicide.  Jeffery W. Vogel, J. Anita Dille, Misti E. Tatro and Gerard J. Kluitenberg. (24)

Effect of Delayed Waterhemp Emergence in Soybean on Growth and Fecundity. Robert G Hartzler, Bruce A. Battles and Dawn E. Refsell. (25)

Relative Competitive Indices of Annual Weeds Using Crop Loss Estimates. Kathrin Schirmacher and J. Anita Dille. (26)

Influence of Shattercane Interference on Corn Yield and Nitrogen Accumulation.  Sarah R. Hans and William G. Johnson. (27)

Integration of Technologies for High Accuracy Weed Mapping in Large Production Fields.  Richard D. Dirks Jr. ,Kevin D. Gibson, and Case R. Medlin. (28)

Spatial Variation in Velvetleaf Emergence as Influenced by Soil Moisture and Temperature. Misti E. Tatro, J. Anita Dille, Jeffery W. Vogel and Gerard J. Kluitenberg. (29)

Nature of Biennial Wormwood Competition in Soybean and Dry Bean.  George O. Kegode and Brian M. Jenks. (30)

Influence Of Shading, Seed Size And Growth Rate On Crop And Weed Responses To Nitrogen.  Matthew M. Harbur and Micheal D.K. Owen. (54)

The Effects of Nitrogen Supply on Root:Shoot Ratio in Corn and Velvetleaf. Kimberly D. Pavelka and John L. Lindquist. (55)

The Influence of Temperature and Shade on Eastern Black Nightshade and Hairy Nightshade Germination and Growth. Amy E. Guza, Adrienne M. Rich, Karen A. Renner, and Chad D. Lee. (56)

Radiation-Use Efficiency of Broadleaf and Grass Weed Species in Monoculture and in Corn.  Greta G. Gramig and David E. Stoltenberg. (57)

Light Level Influences on the Relative Competitiveness of Shattercane and Common Sunflower.   Stephanie R. Deines, J. Anita Dille, David L. Regehr, and Scott Staggenborg. (58)

Soil Moisture and Corn Yield as Affected by Glyphosate Application Timing and Row Spacing.  Caleb D. Dalley, James J. Kells, and Karen A. Renner. (59)

Time of Day Effect on Glyphosate Efficacy.  Keith Mohr and Reid J. Smeda. (60)

Wind Speed Affects Weed and Corn Growth Parameters.  Michael J. Moechnig, David E. Stoltenberg, Chris M. Boerboom, and John M. Norman. (61)

Weed Phenological Variation in Relation to Weather: An Analysis  of 82 Wisconsin Weeds Over Four Years.  Ed Luschei and Jerry Doll. (62)

Spatial Relationship of Annual Weed Populations to Topography. Nicholas N. Schneider, Gregg A. Johnson, Beverly R. Durgan, and Jay C. Bell. (63)

Determining Soybean Row Spacing Effects on Weed Competitive Abilities for WeedSOFT.  Ryan D. Lins and Chris M. Boerboom. (64)

Influence of Overseeded Forage Grasses on Soybean Yield and Winter Annual Weed Suppression.    Satish K. Guttikonda, Kelly A. Nelson and William G. Johnson. (65)

Weed Diversity in Glyphosate-Tolerant Soybean in Minnesota. Julio Scursoni, Dean Peterson, Frank Forcella, Jeff Gunsolus, and Roberto Benech-Arnold. (105)

Yield Penalty Due to Delayed Weed Control in Corn and Soybean. Stevan Z. Knezevic, Sean Evans and Mike Mainz.  (106)

Influence of Herbicide Efficacy on Weed Seed Production.  Andrew A. Schmidt and William G. Johnson. (107)

Environmental and Biological Factors of Perennial Weed Establishment in Kentucky No-Till Fields.   Chad L. Brommer and William W. Witt. (108)

Growth and Development of Common Pokeweed Seedlings. Pablo A. K�lnay and George F. Czapar. (109)

Gene Flow of Imidazolinone Resistance From Cultivated Sunflower to Wild Relatives.  Rafael Massinga and Kassim Al-Khatib.  (110)

Seedling Mortality and Biomass Reduction of Three Weed Species Escaping  Soil Applied Herbicide.  Konanani B. Liphadzi and J Anita Dille. (111)

Evaluation of Medic spp. as a Potential Cover Crop in Corn and Soybeans.   Douglas D. Buhler, Charles E. Brummer, Keith A. Kohler, and Lowell D. Sandell. (112)

Occurrence of common milkweed in Iowa.  Dawn E. Refsell, Robert G. Hartzler, and Douglas D. Buhler. (113)

Ecological Assessment of Glyphosate Tolerant Cropping Systems.  Curtis N. Bensch, Kassim Al-Khatib, and Charles W. Rice. (114)

Variatiability in Weediness Traits Among Common Cocklebur Accessions. Mark R. Jeschke, James J. Wassom, and Patrick J. Tranel. (115)

Common Waterhemp Interference in Corn.  Joseph C. Cordes and William G. Johnson. (132)

Influence of Total Competitive Load After Post Treatment on Corn Yield. Andrew A. Schmidt and William G. Johnson. (133)

Influence of Velvetleaf Density and Soil-Applied Herbicide on Developmentof Size Hierarchies. J. Anita Dille. (134)

Giant Ragweed Emergence and Development Under Different Cropping Systems.  Kurt D. Maertens, Christy L. Sprague, and Loyd M. Wax. (135)

Variation in Morphology and Fate of Giant Ragweed Seeds.  Emilie E. Regnier, Kent Harrison and Jerron T. Schmoll,  Ohio State Univ., Columbus, OH. (136)

Characteristics of Progeny from Crosses Between Waterhemp and Monoecious Amaranthus Species. Mary S. Gumz and Stephen C. Weller. (137)

The Impact of a SingleResidue Incorporation on the Seed Soil Bank of Palmer Amaranth Under Six Crop Management Histories.  Randall S. Currie. (226)

Should Giant Chickweed (Myosotan aquaticum) Still be Considered a Wisconsin Wildflower?   Michael P. Crotser and Scott Bollman. (227)

Woolly Cupgrass Emergence and Control in Response to Time of Tillage. James F. Lux, Damian D. Franzenburg, and Micheal D. K. Owen. (228)

Effect of Tillage on Woolly Cupgrass Population.  Damian D. Franzenburg, James F. Lux, and Micheal D. K. Owen. (229)

Investigations into Glyphosate Resistant Horseweed: Biological Evaluations and Control Recommendations.  Ron Lloyd, David Mayonado, and Robert F. Montgomery. (230)

Weed Shifts in No-Till Glyphosate-Tolerant Crops in Semiarid Regions of the Great Plains.  Gail A. Wicks, Phillip W. Stahlman, Troy M. Price and Jeffrey M. Tichota. (231)

The Impact of Varying Weed Management Intensity on Weed Species Composition.  Jess J. Spotanski and Alex R. Martin. (232)

NCWSS Proceedings, Volume 56
� 2001, North Central Weed Science Society, Inc.