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    13108: Revegetating saltland with swamp sheoak

    Planning underway at the site where frankia species and swamp sheoak will be planted to demonstrate revegetation of saline land. Courtesy Christie Kingston, Avongro Inc.
    Planning underway at the site where frankia species and swamp sheoak will be planted to demonstrate revegetation of saline land. Courtesy Christie Kingston, Avongro Inc.

    It's not easy to grow trees on saline land.

    This project will demonstrate revegetation of saline land using Frankia species and Casuarina obesa (swamp sheoak) to improve biodiversity, soil and water quality.

    Frankia is a nitrogen-fixing bacteria that lives in symbiosis with Casuarinas, letting them grow in soils that are low in nutrients, saline, have extreme pH or even heavy metal pollution. Frankia improves soil nutrition which leads to improved pasture growth under the trees.

    A 1.6 hectare site 30 kilometres east of Brookton will be used for the trial. Seedlings of the top five provenances of swamp sheoak (as identified in previous trials) will be planted in 48 trial plots. Half the plots will have seedlings treated with Frankia and half won't.

    After ongoing monitoring, the process and results will be publicised through a combination of signage, field days and media.

    Investment: $ 25 000
    Delivery organisation: Avongro Incorporated
    Project duration: February 2014 - April 2016
    Location: On Mills road north of Alderside and approximately 30km east of Brookton in the Shire of Brookton
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