Flax Response to Nitrogen and Seeding Rates. (5448)
Authors:
G.J. Endres* - North Dakota State Univ. - Carrington B.K. Hanson - North Dakota State Univ. - Langdon M.A. Halvorson - North Dakota State Univ. - Minot B.G. Schatz - North Dakota State Univ. - Carrington R.A. Henson - North Dakota State Univ. - Carrington
Abstract:
The objective of the trial was to determine flax lodging, seed yield and oil quality response to increasing soil nitrogen (N) levels and seeding rates. The field trial was conducted on loam soil in 2001 to 2003 at the North Dakota State University
Research Extension Centers in Carrington, Langdon and Minot. Experimental design was a randomized complete block with a split-plot arrangement and four replications. Main plots were soil N (less than 67.2, 67.2, 100.8, and 134.4 kg ha-1) and sub-plots were seeding rates (‘Cathay’ at 22.4, 35.8, 49.3 and 62.7 kg ha-1. Trial average flax seed yield from each site-year ranged from 638.3 to 1780.5 kg ha-1. Soil N levels of less than or equal to 100.8 kg N ha-1 were sufficient to support yield. Soil N did not impact plant lodging. Generally seed oil content decreased with greater than 67.2 kg N ha-1, and alpha linolenic acid concentration decreased with increasing soil N levels. Also, soil N levels did not appear to impact oil flavor. Seeding rates of 22.4 kg ha-1 (average established stand of 355 plants ha-1) provided similar seed yield and plant lodging as higher rates.
Speaker Information: Gregory Endres, North Dakota State Univ. - Carrington, Box 219, Carrington, ND 58421; Phone: 701-652-2951; E-mail:
Session Information: Wednesday, November 3, 2004, 10:00 AM-12:00 PM Presentation Start: 10:00 AM (Poster Board Number: 0625)
