Runoff Characteristics of Nutrients Before and After Enforcement of Animal Waste Regulations

• KATO Tasuku

  College of Agriculture, Ibaraki University

• ISHIJIMA Tomoe

  Graduate School of Agriculture, Ibaraki University

• KURODA Hisao

  College of Agriculture, Ibaraki University

• NAKASONE Hideo

  College of Agriculture, Ibaraki University

• KIRI Hirohide

  National Institute for Rural Engineering

Bibliographic Information

Other Title

• 畜産排泄物規制前後の栄養塩の流出特性
• チクサン ハイセツブツ キセイ ゼンゴ ノ エイヨウエン ノ リュウシュツ トクセイ

Abstract

"Law on promoting proper management and use of livestock excreta" was implemented in November 2004 prohibiting the disposal of animal wastes using unlined storage ponds. To examine the influence of the enforcement of this law, a two-year study of water quality and hydrology was conducted on a drainage canal of an area with intensive livestock production. During the irrigation period, the amount of runoff water was 337 mm, the T-P concentration decreased from 3.0 to 1.7 mg · l^-1, and the T-P load decreased from 3.2 to 1.9 kg · d^-1. During the nonirrigation period, the amount of runoff water was 548 mm, the NH₄-N concentration decreased from 1.9 to 1.1 mg · l^-1, the T-P concentration decreased from 2.9 to 1.8 mg · l^-1, the NH₄-N load decreased from 6.3 to 1.9 kg · d^-1, and the T-P load decreased from 13.1 to 2.6 kg · d^-1. In addition, the number of days that irregular T-N, NH₄-N and T-P concentrations were observed decreased. These results suggest that the amount of effluent containing the NH₄-N and T-P from animal wastes decreased.

Journal

• Journal of Japan Society on Water Environment

  Journal of Japan Society on Water Environment 29 (11), 687-692, 2006

  Japan Society on Water Environment

Keywords

• law on promoting proper management and use of livestock excreta
• nitrogen
• phosphorus
• water quality
• earthen storage pond

Details

• CRID: 1390001205081152128
• NII Article ID: 10019371111
• NII Book ID: AN10372439
• DOI: 10.2965/jswe.29.687
• COI: 1:CAS:528:DC%2BD2sXhtFChsA%3D%3D
• ISSN: 18813690
• ISSN: 09168958
• NDL BIB ID: 8573721
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8573721
• Web Site: https://www.jstage.jst.go.jp/article/jswe/29/11/29_11_687/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed