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N mineralisation from bioresources incubated at 12.5∘C
Citation
Ives, SW and Sparrow, LA and Cotching, WE and Doyle, RB and Lisson, S, N mineralisation from bioresources incubated at 12.5∘C, Applied and Environmental Soil Science, 2015 Article 803736. ISSN 1687-7667 (2015) [Refereed Article]
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Copyright Statement
Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/
Abstract
Soils treated with lime-amended biosolids (LAB), poppy seed waste (PSW), anaerobically digested biosolids (ADB) and poppy mulch (PM) and incubated at 12.5°C for 56 days released 45%, 36%, 25%, and −8%, respectively, of total applied N as plant available nitrogen (PAN) by the end of the incubation. The mineralisation rates were contrary to expectations based on the C : N ratios of the four products: LAB (5 : 1), PSW (7 : 1), ADB (3 : 1), and PM (16 : 1). PM showed a significant negative priming effect over the incubation period. These results have implications for production agriculture in temperate regions where application and incorporation of bio-resources traditionally occurs in autumn and spring when soil and air temperatures are relatively low. Current application times may not be suitable for nitrogen release to satisfy crop demand.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | N mineralisation, lime amended biosolids, poppy seed waste, poppy mulch |
| Research Division: | Environmental Sciences |
| Research Group: | Soil sciences |
| Research Field: | Soil chemistry and soil carbon sequestration (excl. carbon sequestration science) |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Environmentally sustainable plant production |
| Objective Field: | Management of solid waste from plant production |
| UTAS Author: | Ives, SW (Dr Stephen Ives) |
| UTAS Author: | Sparrow, LA (Dr Leigh Sparrow) |
| UTAS Author: | Cotching, WE (Dr Bill Cotching) |
| UTAS Author: | Doyle, RB (Associate Professor Richard Doyle) |
| ID Code: | 100252 |
| Year Published: | 2015 |
| Deposited By: | Tasmanian Institute of Agriculture |
| Deposited On: | 2015-05-07 |
| Last Modified: | 2017-11-01 |
| Downloads: | 276 View Download Statistics |
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