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Dissertations / Theses on the topic 'Sodicity'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Wearing, Cameron. "Sodicity and soil microstructure /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18523.pdf.

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2

Rajper, Inayatullah. "The effects of sodicity on the growth and yield of wheat." Thesis, Bangor University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297714.

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3

Kyei-Baffour, Nicholas. "A study into the effects of sodicity on the capping of soils." Thesis, University of Southampton, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268933.

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4

Klopp, Hans Walter. "Soil Salinity and Sodicity Impacts on Soil Shrinkage, Water Movement and Retention." Thesis, North Dakota State University, 2015. https://hdl.handle.net/10365/27879.

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Saline, sodic, and saline-sodic ground waters are problematic throughout the Northern Great Plains and Red River Valley. High sodium adsorption ratio (SAR) and low electrical conductivity (EC) of soil solution and irrigation waters are known to create issues with saturated soil hydrologic conductivity. Our objective was determine the impact of saline, sodic and saline-sodic solutions on soil shrinkage and soil hydrologic properties. Soil shrinkage, water retention, and hydraulic conductivity were determined on a variety of soil textures following saturation with salt solutions of variable EC a

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5

Wong, Vanessa, and u2514228@anu edu au. "The effects of salinity and sodicity on soil organic carbon stocks and fluxes." The Australian National University. Faculty of Science, 2007. http://thesis.anu.edu.au./public/adt-ANU20080428.223144.

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Soil is the worlds largest terrestrial carbon (C) sink, and is estimated to contain approximately 1600 Pg of carbon to a depth of one metre. The distribution of soil organic C (SOC) largely follows gradients similar to biomass accumulation, increasing with increasing precipitation and decreasing temperature. As a result, SOC levels are a function of inputs, dominated by plant litter contributions and rhizodeposition, and losses such as leaching, erosion and heterotrophic respiration. Therefore, changes in biomass inputs, or organic matter accumulation, will most likely also alter these levels

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6

Wong, Vanessa Ngar Lai. "The effects of salinity and sodicity on soil organic carbon stocks and fluxes /." View thesis entry in Australian Digital Theses Program, 2007. http://thesis.anu.edu.au/public/adt-ANU20080428.223144/index.html.

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7

Guedon, Anne-Marie. "Characterization of salinity and sodicity in semi-arid irrigated agricultural lands using remote sensing." Thesis, University of Ottawa (Canada), 2009. http://hdl.handle.net/10393/28382.

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Surface salinity processes are highly dynamic and the methods needed to properly detect them must respond to that dynamism making remote sensing a tool particularly well-suited for the management of salinized lands. It allows the monitoring of affected lands for the prevention of serious degradation through appropriate and timely action it is less costly in terms of time and resources than conventional methods and it is suited to the monitoring of large areas. Researchers are exploring how it can be adapted to the detection of moderate levels of salinity that could perhaps help to better preve

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8

Sameni, A.-M. "The effect of salinity and sodicity on the structure and hydraulic conductivity of soil." Thesis, University of Reading, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234545.

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9

Ghazzi, Pierre Albert. "Controls on and reduction of the sodicity hazard of soils of the Euphrates valley (Syria)." Thesis, University of Salford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386392.

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10

Shorafa, Mahdi. "The effect of sodicity on the hydraulic conductivity of undisturbed and repacked cores of soils." Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343220.

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11

Jayasekera, Samudra University of Ballarat. "An investigation into modification of the engineering properties of salt affected soils using electrokinetics." University of Ballarat, 2008. http://archimedes.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/12805.

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Soil salinity (due to ingress of excess amounts of dissolved salts in soil pores) and soil sodicity (due to excess amounts of sodium ions attached to the clay surface) are significant forms of land degradation in many parts of the world in particular in arid and semi arid regions. In Australia, soil salinity has long been identified as the major form of land degradation and the greatest environmental threat. Saline soils cover almost 6% of Australia’s land mass and impose severe threats on agricultural productivity and built infrastructure with an estimated annual loss of $250 million. In rece

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12

Muller, Felicity. "The effect of sodicity severity and depth on irrigated cotton production at Hillston, New South Wales." Thesis, Faculty of Agriculture, Food & Natural Resources, 2006. http://hdl.handle.net/2123/912.

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13

Jayasekera, Samudra. "An investigation into modification of the engineering properties of salt affected soils using electrokinetics." Thesis, University of Ballarat, 2008. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/34198.

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Soil salinity (due to ingress of excess amounts of dissolved salts in soil pores) and soil sodicity (due to excess amounts of sodium ions attached to the clay surface) are significant forms of land degradation in many parts of the world in particular in arid and semi arid regions. In Australia, soil salinity has long been identified as the major form of land degradation and the greatest environmental threat. Saline soils cover almost 6% of Australia’s land mass and impose severe threats on agricultural productivity and built infrastructure with an estimated annual loss of $250 million. In rece

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14

Jayasekera, Samudra. "An investigation into modification of the engineering properties of salt affected soils using electrokinetics." University of Ballarat, 2008. http://archimedes.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/15710.

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Soil salinity (due to ingress of excess amounts of dissolved salts in soil pores) and soil sodicity (due to excess amounts of sodium ions attached to the clay surface) are significant forms of land degradation in many parts of the world in particular in arid and semi arid regions. In Australia, soil salinity has long been identified as the major form of land degradation and the greatest environmental threat. Saline soils cover almost 6% of Australia’s land mass and impose severe threats on agricultural productivity and built infrastructure with an estimated annual loss of $250 million. In rece

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15

Mayall, Alison Christina. "Relationship of vegetation to salinity and sodicity in wetland meadows of the Chilcotin region of British Columbia." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24861.

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This study investigates the relationships between vegetation and salinity and sodicity in wetland meadows in the Chilcotin region of British Columbia. Eleven vegetation communities and one group of releves with no vegetation were identified using cluster analysis. An exchangeable sodium per cent of 15 and an electrical conductivity of 4 mmhos/cm were found to be appropriate boundaries for distinguishing between saline and sodic tolerant and intolerant vegetation communities. Some salt tolerant species and communities occurred in fresh conditions; however, intolerant species and communities w

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16

Mahmood, Khalid. "Salinity, sodicity tolerance of Acacia ampliceps and identification of techniques useful to avoid early stage salt stress." Kassel Kassel Univ. Press, 2007. http://www.uni-kassel.de/hrz/db4/extern/dbupress/publik/abstract.php?978-3-89958-330-4.

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17

Raue, Judith Doris. "Recycled organic products to reduce the negative impact of salinity and sodicity on acidic soil properties and plant growth." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/20652/1/Judith_Raue_Thesis.pdf.

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Salt affected soils and their effects on land and water resources have been identified as one of the most severe environmental problems facing Australia. This current study focused on the incorporation of recycled organic products (RO) into an acidic saline soil that had been irrigated with an industrial effluent (IE), specifically to investigate the potential for these organics to be used in rehabilitation. Compost incorporated into the acidic saline soil was able to raise pH to more favourable levels required for plant growth (pH 6 – 7.5). Plant growth was however dependent on the input mate

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18

Raue, Judith Doris. "Recycled organic products to reduce the negative impact of salinity and sodicity on acidic soil properties and plant growth." Queensland University of Technology, 2008. http://eprints.qut.edu.au/20652/.

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Salt affected soils and their effects on land and water resources have been identified as one of the most severe environmental problems facing Australia. This current study focused on the incorporation of recycled organic products (RO) into an acidic saline soil that had been irrigated with an industrial effluent (IE), specifically to investigate the potential for these organics to be used in rehabilitation. Compost incorporated into the acidic saline soil was able to raise pH to more favourable levels required for plant growth (pH 6 – 7.5). Plant growth was however dependent on the input mate

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19

Mahmood, Khalid [Verfasser]. "Salinity, sodicity tolerance of Acacia ampliceps and identification of techniques useful to avoid early stage salt stress / Khalid Mahmood." Kassel : Kassel Univ. Press, 2007. http://d-nb.info/993585914/34.

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20

Akhavan-Kharazian, Mahmood. "Calcium Amelioration of Salinity (Sodicity) on Nitrogen Fixation, Stomatal Resistance, Potassium/Sodium Ratio and Total Nitrogen of Phaseolus vulgaris L." DigitalCommons@USU, 1986. https://digitalcommons.usu.edu/etd/3352.

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Extreme salinity is one of the most common environmental constraints with which legume/rhizobia symbionts must deal in arid and semi-arid regions of the world. In some areas, with good management, it has been economically possible to ameliorate the saline soil with calcium. The objective of this study, therefore, was to investigate calcium amelioration of salinity (sodicity) on nitrogen fixation, stomatal resistance, potassium/sodium ratio, and total nitrogen of Phaseolus vulgaris L. Seeds of snapbeans were grown in pots under green house conditions and were irrigated with NaCl concentrations

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21

Januarisya, Atika R. "Sodium impacts of three Queensland soils under CSG water irrigation." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/97995/1/Atika_Januarisya_Thesis.pdf.

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This thesis contributes to identifying the importance of studying the specific nature of soils pertaining to soil impacts subjected to irrigation with coal seam gas water. Focusing on the sodium impact, changes in soil behaviour as well as the sodium adsorption potential of three Queensland soils were observed and analysed. In doing so, it was found that beneficial reuse of CSG water can be used on agricultural land provided irrigation is carefully managed.

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22

TAVARES, FILHO Antônio Novais. "t] Níveis da necessidade de gesso sobre as características físico-químicas e na correção de solos salino-sódicos do perímetro irrigado de Ibimirim - PE." Universidade Federal Rural de Pernambuco, 2010. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5565.

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Submitted by (lucia.rodrigues@ufrpe.br) on 2016-09-20T10:52:52Z No. of bitstreams: 1 Antonio Novais Tavares Filho.pdf: 1157832 bytes, checksum: 9222814ef3b4b11a95213842cbe305f7 (MD5)<br>Made available in DSpace on 2016-09-20T10:52:52Z (GMT). No. of bitstreams: 1 Antonio Novais Tavares Filho.pdf: 1157832 bytes, checksum: 9222814ef3b4b11a95213842cbe305f7 (MD5) Previous issue date: 2010-05-14<br>In regions of arid and semiarid weather, due to high evaporation rates and low annual rainfall, there is the formation of soils with high levels of soluble salts and / or exchangeable sodium, affectin

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23

Paes, Jefferson Luiz de Aguiar. "Dispersão e condutividade hidráulica em solos de Pernambuco, em resposta à saturação por sódio e à concentração salina da solução." Universidade Federal de Viçosa, 2012. http://locus.ufv.br/handle/123456789/5482.

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Made available in DSpace on 2015-03-26T13:53:22Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1396482 bytes, checksum: ee70a57f3335049783efd531f01cddf1 (MD5) Previous issue date: 2012-02-15<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>To estimate clay dispersion susceptibility, the water dispersible clay (WDC) is determined in the laboratory. This analysis may not correspond to reality observed in the field, when saline and saline-sodic soils are present, due to the relatively high salt concentration in the soil solution. In addition, results of determinations of satu

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24

Kele, Benjamin Mark, and b. kele@cqu edu au. "On-site Wastewater Treatment and Reuse Using Recirculatory Evapotranspiration Channels in Regional Queensland." Central Queensland University. Biology, 2005. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20060831.113529.

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The Central Queensland University developed an on-site wastewater treatment and reuse technology. Septic tanks were used for primary treatment and the discharged effluent was then pumped though a series of contained channels. The channels were designed to be a modified evapotranspiration trench; they were comprised of an aggregate layer and a soil layer in which were planted a variety of plants. The aggregate and the soil provided physical filtration, the microorganisms within the effluent, aggregate and soil provided nutrient reuse and transformation and the plants also used the nutrients and

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25

Vasconcellos, Eduardo Ballespi de Castro. "Dinâmica da água e dos nutrientes no sistema de produção integrado gerado pela dessalinização da água de poço do semiárido brasileiro." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/91/91131/tde-08082011-084827/.

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Foram realizadas análises isotópicas, físicas e químicas na água, no solo e nas plantas do Sistema de Produção Integrado Utilizando Efluentes de Dessalinização, criado pela Embrapa Semiárido, como uma alternativa para a reutilização desses efluentes na produção de alimentos e diminuição do impacto ambiental causado pelo descarte incorreto deste rejeito. O sistema avaliado se localiza no Campo Experimental da Caatinga, na Embrapa Semiárido (Petrolina-PE). Os resultados encontrados quanto à ciclagem dos nutrientes indicaram a ocorrência de uma contínua adição dos cátions Ca+2, Mg+2 , K+ e Na+ no

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26

Clark, Louise Jayne. "Changes in properties of vineyard red brown earths under long - term drip irrigation, combined with varying water qualities and gypsum application rates." Title page, table of contents and summary only, 2004. http://hdl.handle.net/2440/37808.

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Irrigation water of poor quality can have deleterious effects on soils. However, the effect of drip irrigation on seasonal and long term (e.g. over 50 years) changes in soil chemical properties is poorly understood, complicated by the two-dimensional water flow patterns beneath drippers. Field and laboratory experiments were conducted, along with computer modelling, to evaluate morphological and physio-chemical changes in a typical Barossa Valley Red Brown Earth (Palexeralf, Chromosol or Lixisol) when drip irrigated under various changing management practices. This work focused on the followin

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27

VASCONCELOS, Ricardo Rafael Andrade de. "Eficiência da aplicação de níveis da necessidade de gesso na correção de solos salino-sódicos." Universidade Federal Rural de Pernambuco, 2012. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5682.

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Submitted by (lucia.rodrigues@ufrpe.br) on 2016-10-13T11:39:44Z No. of bitstreams: 1 Ricardo Rafael Andrade de Vasconcelos.pdf: 933968 bytes, checksum: 226d9d7819e34ad7946ec555c3a74882 (MD5)<br>Made available in DSpace on 2016-10-13T11:39:44Z (GMT). No. of bitstreams: 1 Ricardo Rafael Andrade de Vasconcelos.pdf: 933968 bytes, checksum: 226d9d7819e34ad7946ec555c3a74882 (MD5) Previous issue date: 2012-09-28<br>The present study had as objective to evaluate the effectiveness of applying different levels of gypsum on saline-sodic soil reclamation and its influence on physical-chemical newly co

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28

Silva, Aijânio Gomes de Brito. "Efeito da irrigação com efluente de esgoto rico em sódio em propriedades químicas e físico-hídricas de um Argissolo e produtividade de capim Tifton 85 no município de Lins." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-01072013-085609/.

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O uso de efluente de estação de tratamento de esgoto (EETE) na agricultura irrigada pode ser uma estratégia alternativa de fornecimento de água e nutrientes para culturas agrícolas. Entretanto se realizado por longos períodos pode adicionar grandes quantidades de sódio ao solo o que poderia levar a degradação de suas propriedades e impacto em aspectos agronômicos de capim Tifton 85. Esse trabalho consistiu de dois objetivos: i) avaliar os efeitos da irrigação com efluente rico em sódio durante mais de oito anos em propriedades químicas e físico-hídricas de um Argissolo Vermelho. Para isso fora

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29

Taulis, Mauricio. "Groundwater characterisation and disposal modelling for coal seam gas recovery." Thesis, University of Canterbury. Civil Engineering, 2007. http://hdl.handle.net/10092/3104.

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Coal Seam Gas (CSG) is a form of natural gas (mainly methane) sorbed in underground coal deposits. Mining this gas involves drilling a well directly into an underground coal seam, and pumping out the water (CSG water) flowing through it. Presently, CSG is under exploration in New Zealand (NZ); however, there is concern about CSG water disposal in NZ mainly because of the controversy that this activity has generated in some basins in the United States (US). The first part of this thesis studies CSG water from a well in Maramarua (NZ) and compares it to water from US basins. The NZ CSG water fro

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30

Udy, Sandra. "Assessing Amendment Treatments for Sodic Soil Reclamation in Arid Land Environments." DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7670.

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Plugged and abandoned well pads throughout the Uintah Basin face reclamation challenges due to factors including a harsh climate, invasive species, and high salt loads. Finding ways to alleviate soil sodicity could improve soil reclamation success. Gypsum, sulfur, activated carbon, and Biochar are being applied to improve soil parameters negatively impacted by sodicity, but the direct impact of these amendments on Uintah Basin soils is still largely unknown. The aim of this study was two-fold. (1) Evaluate the effectiveness of gypsum, sulfuric acid, Biochar, activated carbon, and combinations

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31

Kuper, Marcel. "Irrigation management strategies for improved salinity and sodicity control." Phd thesis, 1997. http://tel.archives-ouvertes.fr/tel-00422363.

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An integrated approach is developed to assess a priori the effects of irrigation management interventions on soil salinity, sodicity and transpiration. The approach is tested for a 75,000 ha irrigation system in Pakistan, where canal and groundwater are used conjunctively. The main hypothesis is that by reallocating good quality canal water, the use of poor quality groundwater can be restricted, thus combating salinity and sodicity and mitigating their effects on crops. The study has three components. Firstly, interventions in canal water deliveries to tertiary units are analyzed using an unst

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32

Steele, Meredith Kate. "Urban Sodicity in a Humid Subtropical Climate: Impact on Biogeochemical Cycling." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-08-9949.

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Understanding the mechanisms of non-point source carbon and nutrients in urban watersheds will help to develop policies to maintain surface water quality and prevention of eutrophication. The purpose of this dissertation is to investigate the impact of sodium on carbon and nutrient leaching from the two main contributors; soil and leaf litter, and calculate the sodium exports in a humid subtropical urban river basin. The first chapter reviews the current literature on urbanization in watersheds. Chapter II quantifies the carbon and nutrient in intact soil core leachates and in water extra

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33

Castanheira, Nádia Luísa Assunção Saraiva. "Previsão da salinização e sodicização em solos regados com águas salinas com uso de indicadores de qualidade do solo." Master's thesis, 2010. http://hdl.handle.net/10400.5/2465.

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Mestrado em Gestão e Conservação de Recursos Naturais - Instituto Superior de Agronomia / Universidade de Évora<br>This work aims to predict the salinization and sodification in two soils when irrigated with saline waters combined with different fertigation levels. In a three years period, two experimental fields were set up with maize irrigated with a Triple emitter source (TES) irrigation system. The impact in the two soils (Hortic Antrosol and Eutric Fluvisol) was assessed through soil solution and soil samples collected at the end of each irrigation cycle and after the fall/winter rai

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34

"Comparison of Soil and Vegetation Properties Using Salt Extractor and Conventional Soil Amendments From Irrigation With Coal Bed Natural Gas Product Water." Master's thesis, 2011. http://hdl.handle.net/2286/R.I.9013.

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abstract: Coal bed natural gas (CBNG) production has become a significant contribution to the nation's energy supply. Large volumes of water are generated as a byproduct of CBNG extraction, of which this "product water" is relatively high in sodium. High sodicity reduces water quality and limits environmentally compliant disposal options for producers. Crop irrigation with CBNG product water complies with state and federal laws and is a disposal method that also provides a beneficial use to private landowners. However, this disposal method typically requires gypsum and sulfur soil amendments d

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35

Wong, Vanessa. "The effects of salinity and sodicity on soil organic carbon stocks and fluxes." Phd thesis, 2007. http://hdl.handle.net/1885/49369.

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...¶ This thesis describes a range of laboratory and field investigations on the effects of salinity and sodicity on SOC dynamics.¶ In this research, the effects of a range of salinity and sodicity levels on C dynamics were determined by subjecting a vegetated soil from Bevendale, New South Wales (NSW) to one of six treatments. A low, mid or high salinity solution (EC 0.5, 10 or 30 dS/m) combined with a low or high sodicity solution (SAR 1 or 30) in a factorial design was leached through a non-degraded soil in a controlled environment. Soil respiration and the SMB were measured over a 12-week

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36

Rietz, Diana Nicolle. "Effects of irrigation-induced salinity and sodicity on soil chemical and microbial properties and sugarcane yield." 2001. http://hdl.handle.net/10413/4920.

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The effects of irrigation-induced salinity and/or sodicity on sugarcane yield, and two growth parameters, namely stalk height and number of nodes per stalk , were investigated on a sugarcane estate in the Zimbabwean lowveld. The effects of soil salinity and/or sodicity on the size, activity and metabolic efficiency of the soil microbial community was also studied. Furrow-irrigated fields which had a gradient in soil salinity and/or sodicity which increased from the upper to lower ends of the fields were selected for this study. This gradient was recognized by decreasing sugarcane growth down f

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Mavi, Manpreet Singh. "Dissolved organic matter dynamics and microbial activity in salt-affected soils." Thesis, 2012. http://hdl.handle.net/2440/78914.

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Salt-affected soils (comprising saline and sodic soils) contain excessive amounts of salts and cover over 10 % of the world’s arable land. They are a serious land-degradation problem because a) salinity causes poor plant growth and low microbial activity due to osmotic stress, ion toxicity and imbalanced nutrient uptake and b) plant growth in sodic soils is limited by poor soil structure and aeration. As a consequence of the poor plant growth, salt-affected soils have low organic matter content. Therefore, to minimise soil degradation, it is important to understand the processes in salt-affect

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38

Hasanah, Uswah. "Aggregate coalescence and factors affecting it." 2007. http://hdl.handle.net/2440/45428.

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The phenomenon called soil aggregate coalescence occurs at contact-points between aggregates and causes soil strength to increase to values that can inhibit plant root exploration and thus potential yield. During natural wetting and drying, soil aggregates appear to ‘weld’ together with little or no increase in dry bulk density. The precise reasons for this phenomenon are not understood, but it has been found to occur even in soils comprised entirely of water stable aggregates. Soil aggregate coalescence has not been widely observed and reported in soil science and yet may pose a significant r

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Hasanah, Uswah. "Aggregate coalescence and factors affecting it." Thesis, 2003. http://hdl.handle.net/2440/45428.

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The phenomenon called soil aggregate coalescence occurs at contact-points between aggregates and causes soil strength to increase to values that can inhibit plant root exploration and thus potential yield. During natural wetting and drying, soil aggregates appear to ‘weld’ together with little or no increase in dry bulk density. The precise reasons for this phenomenon are not understood, but it has been found to occur even in soils comprised entirely of water stable aggregates. Soil aggregate coalescence has not been widely observed and reported in soil science and yet may pose a significant

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40

(9809528), Benjamin Kele. "On-site wastewater treatment and reuse using recirculatory evapotranspiration channels in regional Queensland." Thesis, 2005. https://figshare.com/articles/thesis/On-site_wastewater_treatment_and_reuse_using_recirculatory_evapotranspiration_channels_in_regional_Queensland/13423052.

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"The Central Queensland University developed an on-site wastewater treatment and reuse technology. Septic tanks were used for primary treatment and the discharged effluent was then pumped though a series of contained channels. The channels were designed to be a modified evapotranspiration trench; they were comprised of an aggregate layer and a soil layer in which were planted a variety of plants. The aggregate and the soil provided physical filtration, the microorganisms within the effluent, aggregate and soil provided nutrient reuse and transformation and the plants also used the nutrients an

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41

Solis, Perez Alma R. "Characterizing Salinity Tolerance in Greenhouse Roses." Thesis, 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-725.

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Among ornamental plants, roses (Rosa L.) are considered the most economically important, being among the most popular garden shrubs, as well as the favorite cut flowers sold by florists. In the past roses have been classified as fairly salt-sensitive, however, recent nutrition studies suggest that they may actually tolerate moderate to relatively high salinities. The general objective of this research was to reassess the limits of tolerance to salinity of roses and the influence of the rootstock used, to determine the ameliorative properties of supplemental Ca2+ on the response to salt stress,

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