Crop-weed interactions; long-term cropping system effects on weed community dynamics and suppression; selection, persistence, and spread of herbicide-resistant weeds; mechanisms of herbicide resistance. Current research is characterizing the long-term effects of cropping system diversification on weed community dynamics and suppression in the Wisconsin Integrated Cropping Systems Trial. Related research is focusing on weed community dynamics in intermediate wheatgrass (Thinopyrum intermedium) systems. My program also addresses evolved herbicide resistance in giant ragweed (Ambrosia trifida), common waterhemp (Amaranthus rudis), and Palmer amaranth (Amaranthus palmeri) in Wisconsin.
Agronomy 300 Cropping Systems; an intermediate-level, 3-credit course intended for students interested in crop production systems, the environmental impacts of crop production, agroecology, and sustainable agriculture. Topics include agricultural intensification, agroecosystem structure and function, aspects of technology adoption, soil erosion and conservation, tillage systems, weed ecology and management, nutrient dynamics and management, water quality, crop rotation, and cropping system diversification. The application of agroecological concepts and principles for the improvement of cropping systems is emphasized.
Selected Refereed Journal Publications:
Wilson CE, Takano HK, Van Horn CR, Yerka MK, Westra P, Stoltenberg DE (2019) Physiological and molecular analysis of glyphosate resistance in non-rapid response Ambrosia trifida from Wisconsin. Pest Management Science (In press)
Drewitz NM, Stoltenberg DE (2018) Weed communities in strip-tillage corn/no-tillage soybean rotation and chisel-plow corn systems after 10 years of variable management. Weed Science 66:651-661
Hammer DJ, Stoltenberg DE, Colquhoun JB, Conley SP (2018) Has breeding over 80 years improved soybean competitive ability with weeds? Weed Science 66:57-61
Marion SM, Davis VM, Stoltenberg DE (2017) Characterization of Wisconsin giant ragweed resistant to cloransulam. Weed Science 65:41-51
Saunders Bulan M, Wu J, Emshwiller E, Berres ME, Posner JL, Peng D, Wang X, Li J, Stoltenberg DE, Zhang Y (2017) Social and environmental influences on tartary buckwheat (Fagopyrum tataricum Gaertn.) varietal diversity in Yunnan, China. Genetic Resources and Crop Evolution 64:113-125
Saunders Bulan MT, Posner JL, Peng D, Emshwiller E, Wang X, Li J, Stoltenberg DE, Stoecker R (2017) Old crop, new society: Persistence and change of tartary buckwheat farming in Yunnan, China. Human Ecology 45:37-51
Butts TR, Norsworthy JK, Kruger GR, Sandell LD, Young BG, Steckel LE, Loux MM, Bradley KW, Conley SP, Stoltenberg DE, Arriaga FJ, Davis VM (2016) Management of pigweed (Amaranthus spp.) in glufosinate-resistant soybean in the Midwest and Midsouth. Weed Technology 30:355-365
Regnier EE, Harrison SK, Loux MM, Holloman C, Venkatesh R, Diekmann F, Taylor R, Ford RA, Stoltenberg DE, Hartzler RG, Davis AS, Schutte BJ, Cardina J, Mahoney KJ, Johnson WG (2016) Certified crop advisors’ perceptions of giant ragweed (Ambrosia trifida) distribution, herbicide resistance, and management in the Corn Belt. Weed Science 64:361-377.
Larson AD, Renz MJ, Stoltenberg DE (2016) Effects of giant and yellow foxtail competition on establishment and productivity of switchgrass. Weed Science 64:129-136
Glettner CE, Stoltenberg DE (2015) Noncompetitive growth and fecundity of Wisconsin giant ragweed resistant to glyphosate. Weed Science 63:273-281
Recker RA, Lauer JG, Stoltenberg DE, Mitchell PD, Davis VM (2015) Does timing influence the utility of reduced atrazine rates for proactive resistance management? Weed Technology 29:464-471
Recker RA, Mitchell PD, Stoltenberg DE, Lauer JG, Davis VM (2015) Late-season weed escape survey reveals discontinued atrazine use associated with greater abundance of broadleaf weeds. Weed Technology 29:451-463
Saunders Bulan MT, Stoltenberg DE, Posner JL (2015) Buckwheat species as summer cover crops for weed suppression in vegetable cropping systems. Weed Science 63:690-702
Bernstein ER, Stoltenberg DE, Posner JL, Hedtcke JL (2014) Weed community dynamics and suppression in tilled and no-tillage transitional organic winter rye-soybean systems. Weed Science 62:125-137
Fickett ND, Boerboom CM, Stoltenberg DE (2013) Predicted corn yield loss due to weed competition prior to postemergence herbicide application on Wisconsin farms. Weed Technology 27:54-62
Fickett ND, Boerboom CM, Stoltenberg DE (2013) Soybean yield loss potential associated with early-season weed competition across 64 site-years. Weed Science 61:500-507.
Yerka MK, Wiersma AT, Lindenmayer RB, Westra P, Johnson WG, de Leon N, Stoltenberg DE (2013) Reduced translocation is associated with common lambsquarters (Chenopodium album) tolerance to glyphosate. Weed Science 61:353-360.
Yerka MK, de Leon N, Stoltenberg DE (2012) Pollen-mediated gene flow in common lambsquarters (Chenopodium album). Weed Science 60:600-606
Bernstein ER, Posner JL, Stoltenberg DE, Hedtcke JL (2011) Organically-managed, no-tillage winter rye-soybean systems: agronomic, economic, and environmental assessment. Agronomy Journal 103:1169-1179
Jeschke MR, Stoltenberg DE, Kegode GO, Sprague CL, Knezevic SZ, Hock SM, Johnson GA (2011) Predicted soybean yield loss as affected by emergence time of mixed-species weed communities. Weed Science 59:416-423
Sivesind EC, Gaska JM, Jeschke MR, Boerboom CM, Stoltenberg DE (2011) Common lambsquarters response to glyphosate across environments. Weed Technology 25:44-50.
Markham MY, Stoltenberg DE (2010) Corn morphology, mass, and grain yield as affected by early-season red:far-red light environments. Crop Science 50:273-280.