Armstrong Memorial Research and Demonstration Farm

Comparison of Organic and Conventional Crops at the Neely-Kinyon Long-term Agroecological Research (LTAR) Site, 2003

Authors: Kathleen Delate (Iowa State University) , Heather Friedrich (Iowa State University) , Andrea McKern (Iowa State University) , Cynthia A. Cambardella (USDA National Soil Tilth Lab) , Robert Burcham (Iowa State University)

Abstract

The Neely-Kinyon LTAR site was established in 1998 to study the long-term effects of organic production in Iowa. Treatments at the LTAR site, replicated four times in a completely random design, include the following rotations: conventional Corn-Soybean (C-S), organic Corn-Soybean-Oats/Alfalfa (C-S-O/A), organic Corn-Soybean-Oats/Alfalfa-Alfalfa (C-S-O/AA), and Soybean-Wheat (S-W). Variety selection and planting methods were as follows: Pioneer 34M94 corn was planted at a depth of 1.75 in. as untreated seed at a rate of 32,000 seeds/acre in the organic plots and as treated seed at a rate of 30,000 seeds/acre in conventional plots, on May 23, 2003.

Keywords: Horticulture, Agronomy

How to Cite: Delate, K. , Friedrich, H. , McKern, A. , Cambardella, C. A. & Burcham, R. (2004) “Comparison of Organic and Conventional Crops at the Neely-Kinyon Long-term Agroecological Research (LTAR) Site, 2003”, Iowa State University Research and Demonstration Farms Progress Reports. 2003(1).