HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Humphreys, D. G. Articles by Mather, D. E. Search for Related Content PubMed Articles by Humphreys, D. G. Articles by Mather, D. E. Agricola Articles by Humphreys, D. G. Articles by Mather, D. E.

Nitrogen Fertilizer Application and Seeding Date Effects on Oat Grain Milling Quality

Dep. of Plant Science, McGill Univ. (Macdonald Campus), 21 111 Lakeshore Rd., Ste-Anne-de-Bellevue, PQ H9X 3V9, Canada

^* Corresponding author (Email: mather{at}agradm.lan.megill.ca).

Management factors such as N fertilizer rate and seeding date can significantly influence oat (Avena sativa L.) grain milling quality. The effects of N fertilizer and seeding date on the grain yield and milling quality of four oat cultivars were evaluated using two N rates (40 kg ha^–1 applied at seeding or 40 kg ha^–1 applied at seeding plus 20 kg ha^–1 applied at the boot stage) and two seeding dates. Studies were conducted at Ste-Anne-de-Bellevue, PQ, Canada, from 1990 to 1992 and at Ste-Rosalie, PQ, in 1991. Nitrogen treatments had little effect on milling quality at Ste-Anne-de-Bellevue, but hull percentage decreased and plump grain percentage increased with higher N in the Ste-Rosalie experiment. Delayed seeding reduced yields in all four experiments. In the Ste-Anne-de-Bellevue experiments, delayed seeding reduced test weight, 1000-grain weight, plump grain percentage, and theoretical milling yield and increased percentage of hull, thin grain, and bosom grain. In the Ste-Rosalie experiment, opposite effects were observed; this may have resulted from reduced production of secondary and tertiary seeds in the late-seeded treatments. For most milling quality characteristics, significant differences between cultivars were observed, and cultivars interacted with management treatments. In general, the higher application rate of N did not improve oat grain milling quality sufficiently to warrant its usage. Later seeding resulted in inferior yields at all locations, but did not necessarily reduce milling quality. The correct choice of cultivar seems crucial for production of high-quality milling oat grain.

Received for publication June 18, 1993.

This article has been cited by other articles:

				D. M. Peterson, D. M. Wesenberg, D. E. Burrup, and C. A. Erickson Relationships among Agronomic Traits and Grain Composition in Oat Genotypes Grown in Different Environments Crop Sci., May 27, 2005; 45(4): 1249 - 1255. [Abstract] [Full Text] [PDF]