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Publication Type J
Authors Cicchelli, FDF; Wehr, JB; Dalzell, SA; Li, C; Menzies, NW; Kopittke, PM
Author Full Name Cicchelli, Federico D. F.; Wehr, J. Bernhard; Dalzell, Scott A.; Li, Cui; Menzies, Neal W.; Kopittke, Peter M.
Title Overhead-irrigation with saline and alkaline water: Deleterious effects on foliage of Rhodes grass and leucaena
Source AGRICULTURAL WATER MANAGEMENT
Language English
Document Type Article
Author Keywords Chlorophyll fluorescence; Leaf morphology; Plant growth; Toxicity
Keywords Plus SPRINKLER IRRIGATION; SALT TOLERANCE; SOIL-SALINITY; NA+; ACCUMULATION; STRESS; GROWTH; INJURY; PLANTS; CROPS
Abstract Saline and alkaline water represents a potentially valuable resource provided its irrigation does not decrease plant growth. Although the adverse effects of salts within the rooting environment are well-studied, comparatively little is known regarding the direct effects of overhead-irrigation of saline and alkaline water on plant foliage. The present study examined the potential deleterious effects of saline (electrical conductivity, EC, <= 15 dS m(-1)) and alkaline (<= 2000 mg L-1, CaCO3 equivalent) water on foliage of Rhodes grass (Chloris gayana cv. Reclaimer) and leucaena (Leucaena leucocephala ssp. glabrata cv. Tarramba) under a range of growing-conditions. Foliage of leucaena was sensitive, with necrosis and chlorosis evident for saline water at an EC >= 3 dS m(-1) and alkaline water containing >= 500 mg L-1 (CaCO3 equivalent). For leucaena, this damage to the foliage reduced relative shoot fresh mass and chlorophyll fluorescence for saline-treatments, but alkalinity did not reduce relative shoot fresh mass or chlorophyll fluorescence in any treatment. In contrast to leucaena, relative shoot fresh mass of Rhodes grass was not reduced by foliar-applied salinity in any treatment (nor did alkalinity reduce growth of Rhodes grass). It was noted that growing conditions influenced the magnitude of the deleterious effects, with salinization of the soil slightly increasing tolerance to foliar-applied saline water for leucaena. This study has demonstrated that whilst saline and alkaline water can potentially be used for overhead irrigation, differences in observed tolerance exist between plant species, and are influenced by growing conditions. (C) 2016 Elsevier B.V. All rights reserved.
Author Address [Cicchelli, Federico D. F.; Wehr, J. Bernhard; Li, Cui; Menzies, Neal W.; Kopittke, Peter M.] Univ Queensland, Sch Agr & Food Sci, St Lucia, Qld 4072, Australia; [Dalzell, Scott A.] Santos, Queensland Business Unit Environm, Brisbane, Qld 4000, Australia
Reprint Address Kopittke, PM (reprint author), Univ Queensland, Sch Agr & Food Sci, St Lucia, Qld 4072, Australia.
E-mail Address p.kopittke@uq.edu.au
ResearcherID Number Kopittke, Peter/A-6026-2011
ORCID Number Kopittke, Peter/0000-0003-4948-1880
Funding Agency and Grant Number Santos GLNG; Australian Research Council (ARC) [FT120100277]
Funding Text Financial support was provided by Santos GLNG. We acknowledge funding from the Australian Research Council (ARC) for an ARC Future Fellowship for Peter Kopittke (FT120100277). The assistance of two anonymous reviewers is also acknowledged.
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Cited Reference Count 30
Publisher ELSEVIER SCIENCE BV
Publisher City AMSTERDAM
Publisher Address PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN 0378-3774
29-Character Source Abbreviation AGR WATER MANAGE
ISO Source Abbreviation Agric. Water Manage.
Publication Date MAY
Year Published 2016
Volume 169
Beginning Page 173
Ending Page 182
Digital Object Identifier (DOI) 10.1016/j.agwat.2016.03.002
Page Count 10
Web of Science Category Agronomy; Water Resources
Subject Category Agriculture; Water Resources
Document Delivery Number DJ6YQ
Unique Article Identifier WOS:000374359500017
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