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Can seasonal soil N mineralisation trends be leveraged to enhance pasture growth?

OAR@ICRISAT

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Relation http://oar.icrisat.org/11819/
https://doi.org/10.1016/j.scitotenv.2021.145031
doi:10.1016/j.scitotenv.2021.145031
 
Title Can seasonal soil N mineralisation trends be leveraged to enhance pasture growth?
 
Creator Bilotto, F
Harrison, M T
Migliorati, M D A
Christie, K M
Rowlings, D W
Grace, P R
Smith, A P
Rawnsley, R P
Thorburn, P J
Eckard, R J
 
Subject Soil Fertility
Soil Science
 
Description SoilNmineralisation is the process bywhich organicN is converted into plant-available forms,while
soil N immobilisation is the transformation of inorganic soil N into organicmatter and microbial biomass, thereafter
becoming bio-unavailable to plants. Mechanistic models can be used to explore the contribution of
mineralised or immobilised N to pasture growth through simulation of plant, soil and environment interactions
driven by management.
Purpose: Our objectiveswere (1) to compare the performance of three agro-ecosystemsmodels (APSIM, DayCent
and DairyMod) in simulating soil N, pasture biomass and soil water using the same experimental data in three
diverse environments (2), to determine if tactical application of N fertiliser in different seasons could be used
to leverage seasonal trends in N mineralisation to influence pasture growth and (3), to explore the sensitivity
of N mineralisation to changes in N fertilisation, cutting frequency and irrigation rate.
 
Publisher Elsevier
 
Date 2021-02
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11819/1/can%20seasonal.pdf
Bilotto, F and Harrison, M T and Migliorati, M D A and Christie, K M and Rowlings, D W and Grace, P R and Smith, A P and Rawnsley, R P and Thorburn, P J and Eckard, R J (2021) Can seasonal soil N mineralisation trends be leveraged to enhance pasture growth? Science of The Total Environment (TSI), 772. pp. 1-15. ISSN 0048-9697