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Alexa Lystad Defends M.S. Thesis

Alexa Lystad successfully defended her Plant Sciences M.S. thesis, Ethofumesate 4SC Applied Postemergence in Sugarbeet, November 19, 2019 at North Dakota State University.
Alexa Lystad Defends M.S. Thesis

Alexa Lystad (right) with advisor Dr. Tom Peters

January 31, 2020

Alexa Lystad successfully defended her Plant Sciences M.S. thesis, Ethofumesate 4SC Applied Postemergence in Sugarbeet, November 19, 2019 at North Dakota State University.

Lystad evaluated sugarbeet tolerance, herbicide efficacy on common lambsquarters (Chenopodium album), redroot pigweed (Amaranthus retroflexus) and waterhemp (Amaranthus tuberculatus), and rotational crop safety. She found an application level of ethofumesate that provided the greatest common lambsquarters, redroot pigweed, and waterhemp control with the least sugarbeet stature reduction in field and greenhouse experiments. In addition, she found an ethofumesate application level where rotational crop parameters were not affected.

Lystad is from Rolette, North Dakota, and completed her bachelor’s degree in crop and weed sciences at NDSU. She chose to pursue her master’s degree at NDSU because she was interested in learning from Dr. Tom Peters, assistant professor and Extension agronomist in sugarbeets and weed control. She would recommend the NDSU Department of Plant Sciences to prospective students, saying, “The staff and faculty are very friendly and willing to offer aid or advice. The graduate student community is also very active and friendly.”

During her studies at NDSU, Lystad received a 2019-20 ND Community Foundation Scholarship through the U.S. Durum Growers Association.

Lystad has worked as a research specialist in the Extension sugarbeet and weed control project directed by Peters since 2018.

Lystad was advised by Peters, and her graduate committee also included Dr. Kirk Howatt, Dr. Marisol Berti, and Dr. Christy Sprague.

Author: Kamie Beeson, 701-231-7123,
Editor: Karen Hertsgaard, 701-231-5384,

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