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

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (31) Citing Articles via Google Scholar Google Scholar Articles by Ferguson, R. B. Articles by Peterson, T. A. Search for Related Content PubMed Articles by Ferguson, R. B. Articles by Peterson, T. A. Agricola Articles by Ferguson, R. B. Articles by Peterson, T. A. Related Collections Site-Specific Analysis Soil Fertility and Productivity Spatial Distribution

Site-Specific Nitrogen Management of Irrigated Maize

Yield and Soil Residual Nitrate Effects

^a South Central Research & Extension Center, University of Nebraska, Box 66, Clay Center, NE 68933
^b West Central Research & Extension Center, 461 West University Dr., North Platte, NE 69101
^c USDA Soil & Water Conservation Unit, 279 Plant Science, University of Nebraska, Lincoln, NE 68583-0915
^d National Center for Environmental Health, Mailstop F42, Centers for Disease Control and Prevention, 1600 Clifton Rd. N.E., Atlanta, GA 30333
^e Dept. of Civil Engineering, 220 Cobleigh Hall, Montana State University, Bozeman, MT, 59717-3900
^f Pioneer Hi-Bred Int'l., 7100 N.W. 62nd Avenue, Johnstown, IA 50131-1150. Journal Series No. 13316

View larger version (43K): [in a new window]   Fig. 1. Representative experimental design used in the field studies, showing two of five replications. The actual dimensions of the treatment strip (width and length) and yield cells (width and length) varied slightly with each location.

View larger version (28K): [in a new window]   Fig. 2. Grain yield for each location and N treatment. Bars with the same letter (within location and year) are not significantly different (SAS PROC MIXED, differences of least squares means, P = 0.05).

View larger version (22K): [in a new window]   Fig. 3. Soil residual NO3-N (mean concentration to a 0.9-m depth) for each location and N treatment. Bars with the same letter (within location and year) are not significantly different (SAS PROC MIXED, differences of least square means, P = 0.05).

View larger version (74K): [in a new window]   Fig. 4. Kriged maps of soil residual NO3-N (mean concentration to a 0.9-m depth) for the Clay County site in 1996, and soil organic matter (0.2-m depth) in 1994.

View larger version (91K): [in a new window]   Fig. 5. Kriged maps of soil residual NO3-N (mean concentration to a 0.9-m depth) for the Buffalo County 1 site, 1994 through 1997.

View larger version (105K): [in a new window]   Fig. 6. Kriged map of soil organic matter (0.2-m depth), Buffalo County 1 site, 1994.