| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Plant Sci. Dep., South Dakota State Univ., Box 2207A, Brookings, SD 57007
* Corresponding author (anthony_bly{at}sdstate.edu)
Received for publication December 13, 2001. Foliar N applications on wheat (Triticum aestivum L.) have increased grain protein. Foliar N timing evaluations have been minimal. The objectives were (i) determine the optimal timing of foliar N for increased grain protein of hard red winter wheat (HRWW) and spring wheat (HRSW), (ii) evaluate effect of foliar N on grain yield, and (iii) determine relationship of grain protein to foliar N application and grain yield. Foliar N was applied at Feekes stage 10.0 (boot) or 10.8 (postpollination) on two cultivars of HRWW and HRSW each year from 1995 to 2000. The foliar N rate (33.7 kg N ha-1) was applied as 1:1 solution of urea ammonium nitrate (UAN) and water. Fertilizer N for a 3360 kg ha-1 grain yield goal was broadcast as UAN after planting. Soil type was Estelline silt loam (fine-silty over sandy or sandy-skeletal, mixed, superactive, frigid Calcic Hapludoll). Postpollination foliar N gave the highest grain protein during all years. Grain yield was significantly reduced 5% by boot stage foliar N for HRSW. Neither timing application significantly reduced HRWW grain yield. All wheat data were pooled to relate grain yield level and protein response to foliar N. Grain protein and yield from plots without foliar N were inversely related (r2 = 0.57). Postpollination foliar N increased protein 70% of the time when yield goal was exceeded compared with only 23% when it was not. These results show that postpollination foliar N gave higher grain protein and was most effective when planned yield goal was exceeded.
Abbreviations: HRSW, hard red spring wheat • HRWW, hard red winter wheat • UAN, urea ammonium nitrate
This article has been cited by other articles:
|
|
 |
|
  J. U. H. Eitel, D. S. Long, P. E. Gessler, and E. R. Hunt Combined Spectral Index to Improve Ground-Based Estimates of Nitrogen Status in Dryland Wheat Agron. J., November 7, 2008; 100(6): 1694 - 1702. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 B. N. Otteson, M. Mergoum, and J. K. Ransom Seeding Rate and Nitrogen Management on Milling and Baking Quality of Hard Red Spring Wheat Genotypes Crop Sci., March 19, 2008; 48(2): 749 - 755. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. N. Otteson, M. Mergoum, J. K. Ransom, and B. Schatz Tiller Contribution to Spring Wheat Yield under Varying Seeding and Nitrogen Management Agron. J., February 29, 2008; 100(2): 406 - 413. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. N. Otteson, M. Mergoum, and J. K. Ransom Seeding Rate and Nitrogen Management Effects on Spring Wheat Yield and Yield Components Agron. J., November 6, 2007; 99(6): 1615 - 1621. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. D. Subedi, B. L. Ma, and A. G. Xue Planting Date and Nitrogen Effects on Grain Yield and Protein Content of Spring Wheat Crop Sci., January 22, 2007; 47(1): 36 - 44. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. J. Kratochvil, M. R. Harrison Jr., J. T. Pearce, K. J. Conover, and M. Sultenfuss Nitrogen Management for Mid-Atlantic Hard Red Winter Wheat Production Agron. J., January 1, 2005; 97(1): 257 - 264. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| The SCI Journals | Crop Science | Vadose Zone Journal | |||
| Journal of Natural Resources and Life Sciences Education |
Soil Science Society of America Journal | ||||
| Journal of Plant Registrations | Journal of Environmental Quality |
The Plant Genome | |||
