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N mineralisation from bioresources incubated at 12.5C

Citation

Ives, SW and Sparrow, LA and Cotching, WE and Doyle, RB and Lisson, S, N mineralisation from bioresources incubated at 12.5C, Applied and Environmental Soil Science, 2015 Article 803736. ISSN 1687-7667 (2015) [Refereed Article]


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Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/

DOI: doi:10.1155/2015/803736

Abstract

Soils treated with lime-amended biosolids (LAB), poppy seed waste (PSW), anaerobically digested biosolids (ADB) and poppy mulch (PM) and incubated at 12.5C 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 (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 (Dr 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:237 View Download Statistics

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