The Carrington Research Extension Center (CREC) will not be conducting its annual Crop Management Field School this year because of the COVID-19 pandemic. However, as a partial replacement, two exhibits are currently available for viewing at the CREC: weed arboretum and herbicide site-of-action (SOA). Both of these exhibits have been popular and rated highly during past field schools.

Weed arboretum

About 60 live weeds are on display in various stages of development. The weeds are grouped by biology including annual broadleaves and grasses, winter annuals, biennials, perennials. Also, the majority of North Dakota noxious weeds are present.

The display is located south of the CREC headquarters. Individuals can visit the site anytime. Please check in at the main office. Also, tours can be arranged to provide details on weed identification, biology and control.

The entrance to the Weed Arboretum at the NDSU Carrington Research Extension Center.

Herbicide SOA

Six crops (spring wheat, corn, field pea, soybean [two herbicide tolerant types] and sunflower) were planted in strips and were treated with herbicides that represent eight SOA groups. The herbicides and respective SOA groups (in parenthesis) are: Select Max (1), Express (2), Engenia (4), Roundup PowerMax (9), Liberty 280 (10), Flexstar (14), Gramoxone (22) and Balance Flexx (27). Injury symptoms associated with each SOA group can be observed in the crops and weeds present in the exhibit.

Details on herbicide SOA can be found in the NDSU Extension 2020 ND Weed Control Guide.

The herbicide site-of-action exhibit at the NDSU Carrington Research Extension Center.

Video presentations on selected topics from both exhibits were taped last week and tentatively will be posted on the CREC website during the first half of July. Presenters are Joe Ikley, NDSU Extension weed specialist and Greg Endres, NDSU Extension cropping systems specialist.

Greg Endres
Gregory.Endres@ndsu.edu
Extension cropping systems specialist