Growth and elemental accumulation by canola on soil amended with coal fly ash

Yunusa, IAM; Manoharan, V; DeSilva, DL; Eamus, D; Murray, BR; Nissanka, SP

Growth and elemental accumulation by canola on soil amended with coal fly ash

Yunusa, IAM

Manoharan, V DeSilva, DL Eamus, D

Murray, BR

Nissanka, SP

Permalink

Publication Type:: Journal Article
Citation:: Journal of Environmental Quality, 2008, 37 (3), pp. 1263 - 1270
Issue Date:: 2008-05-01

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download full textAdobe PDF (273.52 kB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Yunusa, IAM https://orcid.org/0000-0001-7456-3293	en_US
dc.contributor.author	Manoharan, V	en_US
dc.contributor.author	DeSilva, DL	en_US
dc.contributor.author	Eamus, D https://orcid.org/0000-0003-2765-8040	en_US
dc.contributor.author	Murray, BR https://orcid.org/0000-0002-4734-5976	en_US
dc.contributor.author	Nissanka, SP	en_US
dc.date.issued	2008-05-01	en_US
dc.identifier.citation	Journal of Environmental Quality, 2008, 37 (3), pp. 1263 - 1270	en_US
dc.identifier.issn	0047-2425	en_US
dc.identifier.uri	http://hdl.handle.net/10453/8753
dc.description.abstract	To explore the agronomic potential of an Australian coal fly ash, we conducted two glasshouse experiments in which we measured chlorophyll fluorescence, CO2 assimilation (A), transpiration, stomacal conductance, biomass accumulation, seed yield, and elemental uptake for canola (Brassica napus) grown on soil amended with an alkaline fly ash. In Experiment 1, application of up to 25 Mg/ha of fly ash increased A and plant weight early in the season before flowering and seed yield by up to 21%. However, at larger rates of ash application A, plant growth, chlorophyll concentration, and yield were all reduced. Increases in early vigor and seed yield were associated with enhanced uptake of phosphorus (P) by the plants treated with fly ash. Fly ash application did not influence accumulation of B, Cu, Mo, or Zn in the stems at any stage of plant growth or in the seed at harvest, except Mo concentration, which was elevated in the seed. Accumulation of these elements was mostly in the leaves, where concentrations of Cu and Mo increased with any amount of ash applied while that of B occurred only with ash applied at 625 Mg/ha. In Experiment 2, fly ash applied at 500 Mg/ha and mixed into die whole 30 cm soil core was detrimental to growth and yield of canola, compared with restricting mixing to 5 or 15 cm depth. In contrast, application of ash at 250 Mg/ha with increasing depth of mixing increased A and seed yield. We concluded that fly ash applied at not more than 25 Mg/ha and mixed into the top 10 to 15 cm of soil is sufficient to obtain yield benefits. Copyright © 2008 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. All rights reserved.	en_US
dc.relation.ispartof	Journal of Environmental Quality	en_US
dc.relation.isbasedon	10.2134/jeq2007.0021	en_US
dc.subject.classification	Agronomy & Agriculture	en_US
dc.subject.mesh	Brassica	en_US
dc.subject.mesh	Carbon	en_US
dc.subject.mesh	Soil	en_US
dc.subject.mesh	Particulate Matter	en_US
dc.subject.mesh	Coal Ash	en_US
dc.title	Growth and elemental accumulation by canola on soil amended with coal fly ash	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	37	en_US
utslib.for	0602 Ecology	en_US
utslib.for	04 Earth Sciences	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	06 Biological Sciences	en_US
dc.location.activity	ISI:000255881400055	en_US
dc.location.activity	ISI:000289604700001
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
utslib.copyright.status	open_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	37	en_US

Abstract:

To explore the agronomic potential of an Australian coal fly ash, we conducted two glasshouse experiments in which we measured chlorophyll fluorescence, CO2 assimilation (A), transpiration, stomacal conductance, biomass accumulation, seed yield, and elemental uptake for canola (Brassica napus) grown on soil amended with an alkaline fly ash. In Experiment 1, application of up to 25 Mg/ha of fly ash increased A and plant weight early in the season before flowering and seed yield by up to 21%. However, at larger rates of ash application A, plant growth, chlorophyll concentration, and yield were all reduced. Increases in early vigor and seed yield were associated with enhanced uptake of phosphorus (P) by the plants treated with fly ash. Fly ash application did not influence accumulation of B, Cu, Mo, or Zn in the stems at any stage of plant growth or in the seed at harvest, except Mo concentration, which was elevated in the seed. Accumulation of these elements was mostly in the leaves, where concentrations of Cu and Mo increased with any amount of ash applied while that of B occurred only with ash applied at 625 Mg/ha. In Experiment 2, fly ash applied at 500 Mg/ha and mixed into die whole 30 cm soil core was detrimental to growth and yield of canola, compared with restricting mixing to 5 or 15 cm depth. In contrast, application of ash at 250 Mg/ha with increasing depth of mixing increased A and seed yield. We concluded that fly ash applied at not more than 25 Mg/ha and mixed into the top 10 to 15 cm of soil is sufficient to obtain yield benefits. Copyright © 2008 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. All rights reserved.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/8753