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Water Quality Trends and Changing Agricultural Practices in a Midwest U.S. Watershed, 1994–2006 All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher

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2007

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Renwick, William H., Vanni, Michael J., Zhang, Qianyi, and Patton, Jon, 2007, Water Quality Trends and Changing Agricultural Practices in a Midwest U.S. Watershed, 1994–2006 All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher: J. Environ. Qual., v. 37, no. 5, p. 1862-1874.

Summary

Sediment and nutrient concentrations in surface water in agricultural regions are strongly influenced by agricultural activities. In the Corn Belt, recent changes in farm management practices are likely to affect water quality, yet there are few data on these linkages at the landscape scale. We report on trends in concentrations of N as ammonium (NH4) and nitrate (NO3), soluble reactive phosphorus (SRP), and suspended sediment (SS) in three Corn Belt streams with drainage areas of 12 to 129 km2 for 1994 through 2006. During this period, there has been an increase in conservation tillage, a decline in fertilizer use, and consolidation of animal feeding operations in our study watersheds and throughout the Corn Belt. We use an autoregressive [...]

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  • National and Regional Climate Adaptation Science Centers
  • Northeast CASC

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DOI http://sciencebase.gov/vocab/identifierScheme 10.2134/jeq2007.0401

Citation Extension

journalJ. Environ. Qual.
parts
typePages
value1862-1874
typeVolume
value37
typeNumber
value5
citationTypeJournal Article

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