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Samantha Hogstad Presents M.S. Seminar

Samantha Hogstad presented her Plant Sciences M.S. thesis, Strategies for Weed Management in Organic Production Systems in the Northern Great Plains, on August 10, 2017 at North Dakota State University in Fargo, ND.
Samantha Hogstad Presents M.S. Seminar

Samantha Hogstad (right) with adviser Dr. Greta Gramig

September 7, 2017

On August 10, 2017, Samantha Hogstad presented her M.S. thesis, Strategies for Weed Management in Organic Production Systems in the Northern Great Plains, at North Dakota State University. Her research involved two studies, which were each the first of their kind in North Dakota.

The first study tested continuous organic no-till crop production. In lieu of tillage for weed control, a cover crop roller-crimper system and sheep grazing were used and compared to a conventionally tilled system. Results showed that the weed species differed between these two systems with perennials associated with no-till and summer annuals associated with tilled plots. Weed biomass and yield loss were greater in the no-till system, therefore, successful organic annual crop production under continuous no-till management remains elusive.

The second study looked at the impacts of hemp hurd mulch, paper mulch, and biochar on organic perennial strawberry establishment and production. In year one, each mulch material sufficiently suppressed weeds compared to bare ground. In year two, hemp hurd suppressed weeds better than paper, hay, or bare ground. Soil-applied biochar did not consistently affect strawberry measures. The novel mulch material, hemp hurd, provides effective weed control and, thus, is a viable option for mulching.

Hogstad earned her bachelor’s degree in Crop and Weed Sciences at NDSU and interned in soybean research at DuPont Pioneer as an undergraduate. She also worked for Dr. Greta Gramig in the weed biology and ecology project, and Hogstad cites this connection as the primary reason for choosing to pursue her graduate degree at NDSU.

During her time at NDSU, Hogstad earned the Northern Plains Sustainable Agriculture Society scholarship (2016) and the Dr. John D. and Donna Nalewaja scholarship (2016). She also was inducted into Gamma Sigma Delta, the Honor Society of Agriculture (2017).

Hogstad’s graduate committee consisted of Dr. Pat Carr, Dr. Ted Helms, and Dr. R.J. Goos. Her adviser was Dr. Greta Gramig.

Source: Samantha Hogstad
Author: Kamie Beeson (, 701-231-7123)

Editor: Karen Hertsgaard (, 701-231-5384)

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