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 Meyer, R. D. Articles by Marcum, D. B. Search for Related Content PubMed Articles by Meyer, R. D. Articles by Marcum, D. B. Agricola Articles by Meyer, R. D. Articles by Marcum, D. B.

Potato Yield, Petiole Nitrogen, and Soil Nitrogen Response to Water and Nitrogen

Univ. of California, 129 Hoagland Hall, Land, Air and Water Resources Dep., 1 Shields Ave., Davis, CA 95616-8627
Univ. of California, P.O. Box 9, McArthur, CA 96056-0009

^* Corresponding author (rdmeyer{at}ucdavis.edu).

Detection of high NO₃ concentrations in domestic wells has led to concern about excessive fertilizer N use in crop production. A potato (Solanum tuberosum L. cv. Russet Burbank) experiment was initiated to examine the effect of water and N on potato yield and quality, tuber N concentrations, petiole NO₃ concentrations, and N distribution in the soil. The field trial consisted of a line-source irrigation system with six water rates (0.33, 0.66, 1.00, 1.10, 1.20, and 1.30 times crop evapotranspiration ETc) each having six planting-time N rates (0, 56, 112, 168, 224, and 448 kg ha^–1) replicated four times with treatments applied to the same plots in two successive years on a Pittville sandy loam (fine-loamy, mixed, mesic Typic Argixerolls). Yields were significantly increased with water, averaging 14.1 to 54.4 Mg ha^–1 in 1992 and 20.8 to 46.5 in 1993. Nitrogen rate significantly increased yield in 1993, averaging 28.7 to 44.1 Mg ha^–1, but not in 1992. Residual soil profile NO₃-N (1040 mg kg^–1) present at planting time in the first cropping season was utilized, denitrified, or leached from the top 150 cm of soil by above-normal winter rainfall before the beginning of the second season. At the end of the second season, low NO₃–N concentrations were observed in soil profiles receiving 0,112, and 224 kg N ha^–1, whereas a concentration of 1050 mg kg t was found in the 0- to 60-cm depth of soil with the 448 kg N ha^–1 rate. High residual soil N in 1992 resulted in N use efficiency (NUE) for tubers of >200 g kg^–1; in the 1993 season, however, NUE was > 300 g kg^–1. Nearmaximum yields were obtained with 1.10 to 1.20 ETc applied water and 0 to 56 kg N ha^–1 in 1992 and with 1.10 to 1.30 ETc applied water and 168 to 224 kg N ha^–1 in 1993.

Received for publication March 20, 1997.

This article has been cited by other articles:

				H. H. Wang, T. K. Tan, and R. T. Schotzko Interaction of potato production systems and the environment: a case of waste water irrigation in central Washington Waste Management Research, February 1, 2007; 25(1): 14 - 23. [Abstract] [PDF]

				F. Zvomuya, C. J. Rosen, M. P. Russelle, and S. C. Gupta Nitrate Leaching and Nitrogen Recovery Following Application of Polyolefin-Coated Urea to Potato J. Environ. Qual., March 1, 2003; 32(2): 480 - 489. [Abstract] [Full Text] [PDF]