Relative salinity tolerance of 35 lolium spp. Cultivars for urban landscape and forage use

Kenneth B. Marcum, Mohammad Pessarakli

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Abstract

    Increasing population growth, particularly in urban centers, is resulting in critical freshwater shortages for both agriculture and urban use worldwide. To counteract existing water crises, many governments are restricting use of freshwater sources for irrigation. In the urban setting, governments are requiring use of reclaimed wastewater or other secondary saline water sources in lieu of freshwater for landscape irrigation. Lolium spp. (ryegrasses) is widely used for forage as well as in urban turf landscapes. Relative salinity tolerance of 35 Lolium spp. cultivars was determined in solution culture by measuring changes in shoot weight, root weight, rooting depth, and % green leaf canopy area, relative to control (nonsalinized) plants. There was a wide range in salinity tolerance of the tested cultivars, ranging from salt tolerant (e.g., cv. Paragon) to salt sensitive (e.g., cv. Midway). All shoot parameters were highly correlated, being mutually effective predictors of salinity tolerance. Root dry weight, significantly correlated with all shoot quality and growth parameters, was also effective in predicting relative salinity tolerance. However, rooting depth was not correlated with other parameters, and therefore not effective in predicting relative salinity tolerance. Based on these results, it is concluded that salt-tolerant cultivars exist within Lolium spp. for agricultural forage and urban landscape use.

    Original languageEnglish
    Title of host publicationDevelopments in Soil Salinity Assessment and Reclamation
    Subtitle of host publicationInnovative Thinking and Use of Marginal Soil and Water Resources in Irrigated Agriculture
    PublisherSpringer Netherlands
    Pages397-403
    Number of pages7
    ISBN (Electronic)9789400756847
    ISBN (Print)9789400756830
    DOIs
    Publication statusPublished - Jan 1 2013

    Keywords

    • Forage
    • Lolium spp
    • Salinity tolerance
    • Turfgrass
    • Urban landscape

    ASJC Scopus subject areas

    • Agricultural and Biological Sciences(all)
    • Environmental Science(all)
    • Engineering(all)

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