N, P, and K Budgets and Changes in Selected Topsoil Nutrients over 10 Years in a Long-Term Experiment with Conventional and Organic Crop Rotations
Author
Source
Applied and Environmental Soil Science
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-08-15
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Earth Science , Water and Environment
Abstract EN
This study presents soil system budgets of N, P and K in six contrasting cropping systems during 10 years of a long-term experiment in southeast Norway.
The experiment included systems with arable cash-cropping and with mixed arable-dairy cropping (cash- and fodder crops), with organic and conventional management represented in both groups.
All major nutrient inputs and outputs were measured or estimated.
State of the art conventional cash-cropping appeared to be balanced in terms of N, whereas conventional mixed cropping had an N surplus.
By contrast, less up to date conventional arable cash-cropping and all the organic systems showed indications of soil organic N depletion (negative N budgets).
All the organic systems showed that mining of the soil P and K content occurs, whereas the conventional systems all had P and K surpluses.
The results corresponded well with measured differences between systems in terms of ignition loss, P-AL, K-AL and K-HNO3 measured in 2009.
This study shows that a fertile soil may be exposed to substantial mining of N, P and K over many years before it is detectable by traditional analyses, and that field nutrient budgeting is a feasible, but data-demanding, approach to detect such misbalances at an early stage.
American Psychological Association (APA)
Korsaeth, Audun. 2012. N, P, and K Budgets and Changes in Selected Topsoil Nutrients over 10 Years in a Long-Term Experiment with Conventional and Organic Crop Rotations. Applied and Environmental Soil Science،Vol. 2012, no. 2012, pp.1-17.
https://search.emarefa.net/detail/BIM-479817
Modern Language Association (MLA)
Korsaeth, Audun. N, P, and K Budgets and Changes in Selected Topsoil Nutrients over 10 Years in a Long-Term Experiment with Conventional and Organic Crop Rotations. Applied and Environmental Soil Science No. 2012 (2012), pp.1-17.
https://search.emarefa.net/detail/BIM-479817
American Medical Association (AMA)
Korsaeth, Audun. N, P, and K Budgets and Changes in Selected Topsoil Nutrients over 10 Years in a Long-Term Experiment with Conventional and Organic Crop Rotations. Applied and Environmental Soil Science. 2012. Vol. 2012, no. 2012, pp.1-17.
https://search.emarefa.net/detail/BIM-479817
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-479817