JEQ Grow Your Career With ASA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published in J Environ Qual 5:274-278 (1976)
© 1976 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Miller, R. J.
Right arrow Articles by Smith, R. B.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Miller, R. J.
Right arrow Articles by Smith, R. B.
Agricola
Right arrow Articles by Miller, R. J.
Right arrow Articles by Smith, R. B.

Nitrogen Balance in the Southern San Joaquin Valley1

Robert J. Miller and Richard B. Smith2

ABSTRACT

A nitrogen balance for the southern San Joaquin Valley of California has been calculated, using techniques and methodology developed for the Upper Santa Ana River Basin of southern California. The two areas differed considerably in both size (the latter being much smaller) and agricultural function. Data were compiled on N inputs, use, and outputs for many sources within the study area. Such data enabled construction of a flow diagram depicting best estimates of N pools and fluxes within the San Joaquin Valley basin. Results show N inputs into the study area from various sources were somewhat greater than output to the atmosphere and by plant removal. Inputs to the soil N pool were about 9 kg/ha more in 1971 than in 1961. Since the soil N pool was estimated to be about 11 metric tons/ha, this represented an increase of about 0.1%. However, since the increases of N are not evenly distributed over the study area, high N concentrations can develop in some local areas.

Key Words: nitrate • land surface • soil and substrata • surface and ground water • crop removal

NOTES

1 Contribution from the Dep. of Land, Air, and Water Resources, Water Sci. and Eng. Sect., Univ. of California, Davis, CA 95616. Research supported by Kearney Foundation of Soil Science and Regional Research W-111.

2 Associate Water Scientist and Staff Research Associate, respectively. The coauthor is now associated with Spreckels Sugar Company.

Received for publication September 10, 1975.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Vadose Zone Journal Journal of Plant Registrations
Journal of Natural Resources
and Life Sciences Education		 Soil Science Society of America Journal
Copyright © 1976 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.