Sodium Contents in Dairy Cow Urine and Soil Aggregate Sizes Influence the Amount of Nitrogen Lost from Soil
Joint Authors
Hamamoto, Toru
Uchida, Yoshitaka
Source
Applied and Environmental Soil Science
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-11-12
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Earth Science , Water and Environment
Abstract EN
Cow urine deposition on pasture soils is a major source of N-related environmental impacts in the dairy farming systems.
The urine-N can potentially be lost to the ground water as nitrate (NO3-) and to the atmosphere as nitrous oxide (N2O).
These N-related environmental impacts are possibly related to the sodium (Na+) concentrations in urine.
We sampled a pasture soil and separated it into three aggregate size groups (0–3, 3–5, and 5–7 mm).
Then, cow urine with variable Na+ concentrations (4.3–6.1 g Na+ L−1) was added to the soil cores.
We treated the cores with simulated heavy rains and measured the amounts of calcium (Ca2+), Na+, potassium (K+), and inorganic-N leached from the soils.
N2O emission rates were also determined throughout the experimental period.
Increasing Na+ concentration in urine decreased the loss of NO3- (−20%), after repeatedly applied simulated rain treatments (30 mm × 3), whereas it increased the loss of ammonium (31%) and K+ (19%).
For the loss of Ca2+ and the emissions of N2O, the effect of the Na+ concentrations was unclear.
Field level studies and studies focusing on the mechanisms behind the changes in nutrient losses are needed.
American Psychological Association (APA)
Hamamoto, Toru& Uchida, Yoshitaka. 2015. Sodium Contents in Dairy Cow Urine and Soil Aggregate Sizes Influence the Amount of Nitrogen Lost from Soil. Applied and Environmental Soil Science،Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1052397
Modern Language Association (MLA)
Hamamoto, Toru& Uchida, Yoshitaka. Sodium Contents in Dairy Cow Urine and Soil Aggregate Sizes Influence the Amount of Nitrogen Lost from Soil. Applied and Environmental Soil Science No. 2015 (2015), pp.1-10.
https://search.emarefa.net/detail/BIM-1052397
American Medical Association (AMA)
Hamamoto, Toru& Uchida, Yoshitaka. Sodium Contents in Dairy Cow Urine and Soil Aggregate Sizes Influence the Amount of Nitrogen Lost from Soil. Applied and Environmental Soil Science. 2015. Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1052397
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052397