![](/images/graphics-bg.png)
Nitrogen and Phosphorus Changes in Soil and Soil Water after Cultivation
Joint Authors
Hannah, Murray
Watkins, Mark
Nash, David M.
Castlehouse, Hayley
Source
Applied and Environmental Soil Science
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-22
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Earth Science , Water and Environment
Abstract EN
Untilled dairy pasture has the potential to release more phosphorus to the environment than a regularly ploughed pasture.
In this paper we report the initial results of a study comparing the effects of cultivation, phosphorus (P) fertiliser (10, 35, and 100 kg P/ha), and two types of vegetation (ryegrass (Lolium perenne) or ryegrass mixed with clover (Trifolium repens)) in a randomised complete block design.
Phosphorus was measured in soil samples taken from depths of 0–20 mm and 0–100 mm.
Waters extracted from the 0–20 mm samples were also analysed.
In all cases, the P concentrations (Olsen P, Colwell P, Total P, CaCl2 extractable P, Dissolved Reactive P, and Total Dissolved P) in the top 20 mm declined with ploughing.
Dissolved Reactive P measured in the soil water was 70% less overall in the ploughed plots compared with the unploughed plots, and by 35 weeks after P treatments the decrease in Dissolved Reactive P was 66%.
The effects of the fertiliser and pasture treatments were inconclusive.
The data suggest that ploughing can lower the risk of P exports from intensive dairy farms in the trial area.
American Psychological Association (APA)
Watkins, Mark& Castlehouse, Hayley& Hannah, Murray& Nash, David M.. 2012. Nitrogen and Phosphorus Changes in Soil and Soil Water after Cultivation. Applied and Environmental Soil Science،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-450341
Modern Language Association (MLA)
Watkins, Mark…[et al.]. Nitrogen and Phosphorus Changes in Soil and Soil Water after Cultivation. Applied and Environmental Soil Science No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-450341
American Medical Association (AMA)
Watkins, Mark& Castlehouse, Hayley& Hannah, Murray& Nash, David M.. Nitrogen and Phosphorus Changes in Soil and Soil Water after Cultivation. Applied and Environmental Soil Science. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-450341
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-450341