Positions

Overview

  • Dave Mortensen has spent his career working on sustainable design of cropping systems. Early on, much of this work was pest management centered. More recently, his work has centered on cropping systems design and function and his work has taken on a decidedly landscape approach to framing questions. He is best known for his work on sustainable pest management systems. His work has helped shape national policy with both the USDA and EPA regarding pesticide use and regulations associated with genetically modified crops. Mortensen also serves holds the scientist seat on the USDA's National Organic Standards Board. Mortensen rose to the rank of Distinguished Professor at Penn State before assuming his new role at UNH in 2018.
  • Publications

    Academic Article

    Year Title
    2018 Growing degree days and cover crop type explain weed biomass in winter cover cropsAgronomie Agronomy for Sustainable Development.  38:65. 2018
    2018 Evidence for multi-trophic effects of pesticide seed treatments on non-targeted soil faunaSoil Biology and Biochemistry.  125:144-155. 2018
    2017 Ecosystem Services and Disservices Are Bundled in Simple and Diverse Cover Cropping SystemsAGRICULTURAL & ENVIRONMENTAL LETTERS.  2:170033-170033. 2017
    2017 Agriculture in 2050: Recalibrating Targets for Sustainable IntensificationBioScience.  67:385-390. 2017
    2017 Another viewWeed Science.  65:203-205. 2017
    2017 Balancing multiple objectives in organic feed and forage cropping systemsAgriculture, Ecosystems and Environment.  239:219-227. 2017
    2017 Achieving Diverse Cover Crop Mixtures: Effects of Planting Date and Seeding RateAgronomy Journal Journal of Production Agriculture.  109:259-271. 2017
    2017 Reconciling opposing soil processes in row-crop agroecosystems via soil functional zone managementAgriculture, Ecosystems and Environment.  236:99-107. 2017
    2016 Precision control of soil nitrogen cycling via soil functional zone managementAgriculture, Ecosystems and Environment.  231:291-295. 2016
    2016 A comparison of soil hydrothermal properties in zonal and uniform tillage systems across the US Corn BeltGeoderma.  273:12-19. 2016
    2016 Influence of pesticide seed treatments on rhizosphere fungal and bacterial communities and leaf fungal endophyte communities in maize and soybeanApplied Soil Ecology.  102:61-69. 2016
    2016 Evidence for indirect effects of pesticide seed treatments on weed seed banks in maize and soybeanAgriculture, Ecosystems and Environment.  216:269-273. 2016
    2016 Soil Functional Zone Management: A Vehicle for Enhancing Production and Soil Ecosystem Services in Row-Crop Agroecosystems.Frontiers in Plant Science.  7:65. 2016
    2016 Soil Water Holding Capacity Mitigates Downside Risk and Volatility in US Rainfed Maize: Time to Invest in Soil Organic Matter?PLoS ONE.  11:e0160974. 2016
    2014 Multivariate relationships influencing crop yields during the transition to organic managementAgriculture, Ecosystems and Environment.  189:119-126. 2014
    2014 Structural Equation Modeling Facilitates Transdisciplinary Research on Agriculture and Climate ChangeCrop Science.  54:475-483. 2014
    2012 Navigating a Critical Juncture for Sustainable Weed ManagementBioScience.  62:75-84. 2012
    2011 2,4-Dichlorophenoxyacetic acid (2,4-D)-resistant crops and the potential for evolution of 2,4-D-resistant weeds.Proceedings of the National Academy of Sciences of the United States of America.  108:E37. 2011
    2011 Assessing and Visualizing Agricultural Management Practices: A Multivariable Hands-On Approach for Education and ExtensionWeed Technology.  25:680-687. 2011
    2011 Yield and Net Returns during the Transition to Organic Feed Grain ProductionAgronomy Journal Journal of Production Agriculture.  103:51-59. 2011
    2009 Weed-crop competition relationships differ between organic and conventional cropping systemsWeed Research.  49:572-580. 2009
    2009 Weed Science Research and Funding: A Call to ActionWeed Science.  57:442-448. 2009
    1986 EFFECTS OF TEMPERATURE AND PHOTOPERIOD ON TEXAS PANICUM (PANICUM-TEXANUM) AND WILD PROSO MILLET (PANICUM-MILIACEUM)Weed Science.  34:876-882. 1986
    1985 EFFECTS OF TEMPERATURE AND PHOTOPERIOD ON COMMON CRUPINA (CRUPINA-VULGARIS)Weed Science.  33:333-339. 1985
    1984 Interaction of increasing atmospheric carbon dioxide and soil nitrogen on the carbon balance of tundra microcosms.Oecologia.  65:26-29. 1984
    1984 TEMPERATURE EFFECTS ON GROWTH AND LEAF PRODUCTION IN 3 WEED SPECIESWeed Science.  32:655-663. 1984
    1983 Increasing atmospheric carbon dioxide: possible effects on arctic tundra.Oecologia.  58:286-289. 1983
    1982 Arctic tundra: A source or sink for atmospheric carbon dioxide in a changing environment?Oecologia.  53:7-11. 1982
    1981 GROWTH-RESPONSE OF WHEAT TO CO2 ENRICHMENT AND DIFFERENT LEVELS OF MINERAL-NUTRITIONAgronomy Journal Journal of Production Agriculture.  73:1023-1027. 1981

    Teaching Activities

  • ANFS Seminar Taught course 2019
  • Education And Training

  • B.A. Botany, Drew University
  • M.S. Physiological Ecology, Duke University
  • Ph.D. Crop Science and Soil Physics, North Carolina State University
  • Full Name

  • David Mortensen