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 Fowler, D. B. Articles by Baker, R. J. Search for Related Content PubMed Articles by Fowler, D. B. Articles by Baker, R. J. Agricola Articles by Fowler, D. B. Articles by Baker, R. J.

Nitrogen Fertilization of No-Till Winter Wheat and Rye. II. Influence on Grain Protein

Crop Development Centre, Univ. of Saskatchewan, Saskatoon, Saskatchewan, S7N OWO, Canada

^* Corresponding author.

No-till seeding into standing stubble immediately after harvest of the previous crop (‘stubbling-in’) has been employed to successfully produce winter wheat (Triticum aestivum L.) and rye (Secale cereale L.) on the western Canadian prairies. Soil N deficiencies, which result in low grain protein concentrations, are often associated with stubbled-in winter cereals. In the present study, the effect of N fertilization on protein concentration and protein yield of stubbled-in winter wheat and rye was evaluated in 40 field trials conducted over a wide range of soil types and environmental conditions in Saskatchewan, Canada. Grain protein concentrations exhibited sigmoidal responses to N fertilization with minimums of 98.8 and 93.0 and maximums that varied from 130 to 231 and 107 to 177 g protein kg^–1 dry grain for wheat and rye, respectively. The Gompertz equation was employed to describe the relationship between protein concentration and total available N, providing an average reduction in sums of squares, due to the model, of 96 and 97% for wheat and rye, respectively. Grain protein yield response to N fertilizer was described by an inverse polynomial function that provided an average reduction in sums of squares, due to the model, of 99% for both wheat and rye. Although grain protein concentration was significantly higher for winter wheat in most trials, winter rye demonstrated a greater N use efficiency for grain production. Higher grain yields for rye compensated for lower protein concentrations, and at equal N rates rye produced as much or more protein per hectare than wheat in all comparable trials except two.

Received for publication May 31, 1988.

This article has been cited by other articles:

				D. C. Farrer, R. Weisz, R. Heiniger, J. P. Murphy, and J. G. White Minimizing Protein Variability in Soft Red Winter Wheat: Impact of Nitrogen Application Timing and Rate Agron. J., June 27, 2006; 98(4): 1137 - 1145. [Abstract] [Full Text] [PDF]

				M. J. Guttieri, R. McLean, J. C. Stark, and E. Souza Managing Irrigation and Nitrogen Fertility of Hard Spring Wheats for Optimum Bread and Noodle Quality Crop Sci., August 26, 2005; 45(5): 2049 - 2059. [Abstract] [Full Text] [PDF]

				D. B. Fowler Crop Nitrogen Demand and Grain Protein Concentration of Spring and Winter Wheat Agron. J., March 1, 2003; 95(2): 260 - 265. [Abstract] [Full Text] [PDF]

				D. Makowski, D. Wallach, and J.-M. Meynard Statistical Methods for Predicting Responses to Applied Nitrogen and Calculating Optimal Nitrogen Rates Agron. J., May 1, 2001; 93(3): 531 - 539. [Abstract] [Full Text] [PDF]

				M. J. Ottman, T. A. Doerge, and E. C. Martin Durum Grain Quality as Affected by Nitrogen Fertilization near Anthesis and Irrigation During Grain Fill Agron. J., September 1, 2000; 92(5): 1035 - 1041. [Abstract] [Full Text]