803736.pdf (1.36 MB)
Download fileN mineralisation from bioresources incubated at 12.5∘C
journal contribution
posted on 2023-05-18, 09:42 authored by Stephen IvesStephen Ives, Sparrow, LA, Cotching, W, Richard DoyleRichard Doyle, Lisson, SSoils 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.
History
Publication title
Applied and Environmental Soil ScienceVolume
2015Article number
803736Number
803736Pagination
1-7ISSN
1687-7667Department/School
Tasmanian Institute of Agriculture (TIA)Publisher
Hindawi Publishing CorporationPlace of publication
United StatesRights statement
Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/Repository Status
- Open