Towards an empirical relationship between root length density and root number in windbreak-grown cadaghi (Corymbia torelliana) trees

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dc.contributor.author Tamang, Bijay
dc.contributor.author Andreu, Michael G.
dc.contributor.author Staudhammer, Christina L.
dc.contributor.author Rockwood, Donald L.
dc.contributor.author Jose, Shibu
dc.date.accessioned 2018-11-30T20:48:26Z
dc.date.available 2018-11-30T20:48:26Z
dc.date.issued 2011-11-30
dc.identifier.citation Tamang, B. et al. (2011): Towards an empirical relationship between root length density and root number in windbreak-grown cadaghi (Corymbia torelliana) trees. Plant Root, 5. DOI: 10.3117/plantroot.5.40 en_US
dc.identifier.uri http://ir.ua.edu/handle/123456789/5124
dc.description.abstract Because windbreaks are planted for sustainable agriculture but may lower crop yields near them due to competition, suitable competition mitigation methods must be applied at the windbreak-crop interface to increase crop yields. Effective underground competition management requires information on important root variables such as preferential root growth direction and root length density (RLD, root length per unit volume of soil). This study examined root isotropy (i.e., uniformity in all directions) in windbreak- grown cadaghi (Corymbia torelliana) trees in south Florida and developed an empirical relationship between RLD and number of roots (N) per unit of surface of soil exiting the trench face. Numbers of roots exiting the frontal face parallel to the windbreak (NX), vertical face perpendicular to the frontal face (NY), and basal horizontal face (NZ) of 10 x 10 x 10 cm soil cubes were counted. Cadaghi roots were anisotropic and had horizontal growth preference. Average root numbers were ranked NX>NY>NZ. Both NX and the average root number exiting X, Y and Z faces of the soil cube (NAVG) were significant variables for estimating RLD. The coefficients of NX and NAVG were 1.1 and 3.1. These results should be helpful to manage underground competition effectively at the windbreak-crop interface to improve crop yields. en_US
dc.format.mimetype application/pdf en_US
dc.subject competition mitigation en_US
dc.subject root isotropy en_US
dc.subject root management en_US
dc.subject trench profile en_US
dc.subject windbreak en_US
dc.title Towards an empirical relationship between root length density and root number in windbreak-grown cadaghi (Corymbia torelliana) trees en_US
dc.type text


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