Iowa State University
College of Agriculture and Life Sciences

Armstrong Memorial Research and Demonstration Farm



Lewis, Pottawattamie County

Directions: 11 miles southwest of Atlantic on Highway 6, .5 mile south on M53 and .75 mile east on gravel.

Armstrong Research and Demonstration Farm
53020 Hitchcock Avenue
Lewis, IA 51544

(712) 769-2402

click here for a map view


400 acres


Wallace Foundation for Rural Research and Development


Research farm staff help visitors learn in the field.


The Wallace Foundation was formed in 1990 to enhance agricultural research and education for southwest Iowa. The Armstrong Research and Demonstration Farm was established by a donation of 40 acres and the sale of 360 acres to the foundation by Gail and Glendale Armstrong in 1993. The Neely-Kinyon Research and Demonstration Farm is managed as a satellite of this farm. The Wallace Learning Center building was completed in 1997 and houses staff for ISU Extension and the farm.


Gently to strongly sloping well-drained loess soils characterize the Armstrong farm area. Predominant soils are:

2-14 percent slope, very well drained, occurs on upland ridges and side slopes, loess soil

A hoop barn is used to study feeding beef cattle under roof to minimize feedlot runoff.

Research and Demonstration

Crops. Row crop and forage management studies focus on corn and soybean row spacing, strip-cropping, insecticide and herbicide trials, planting dates and populations and weed management.

Soil. Agronomists study potassium and phosphorus application rates and placement and their effect on soil fertility and crop yields. They also study timing and rates of nitrogen, lime and manure on row crops. The topography of the area makes soil erosion and tillage work important.

livestock. Researchers study sustainable livestock production methods. Animal scientists conduct beef nutrition, health and management studies. Beef cattle are fed in a deep-bedded hoop barn.

Horticultural Crops. The farm has an extensive vegetable, fruit and flower garden. It is the site of the All-American Variety Selection testing. A home orchard and high tunnel are on the farm.


Planting corn in a rye cover crop.


A cattle-feeding research unit was completed in 1995. The Wallace Learning Center features a meeting place for up to 150 people and rural small-business incubator. In 2004, a hoop barn for feeding beef cattle and a greenhouse were constructed.