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Calotrope (Calotropis procera) control

Vitelli, J. S., Madigan, B., Wilkinson, P. and van Haaren, P. (2008) Calotrope (Calotropis procera) control. Rangeland Journal, 30 (3). pp. 339-348.

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Article Link(s): http://dx.doi.org/10.1071/RJ07064

Publisher URL: http://www.publish.csiro.au/

Abstract

Calotrope [Calotropis procera (Aiton) W.T.Aiton] is an exotic shrub or small tree species that is currently invading the tropical savannahs of northern Australia. A chemical trial involving 11 herbicides and four application methods (foliar, basal bark, cut stump and soil applied) was undertaken to identify effective chemicals to control calotrope. Of the foliar herbicides tested, imazapyr provided 100% mortality at the rates applied, and the higher rate of metsulfuron-methyl killed 100% of the treated plants. The herbicides 2,4-D butyl ester, fluroxypyr, triclopyr and triclopyr/picloram killed greater than 80% of the plants when applied by a basal bark or cut stump (when cut 5cm above ground level) method of application. Plants cut close to ground level (5cm) were controlled more effectively than plants cut 20cm above ground level. Chemical control (foliar and cut stump spraying) is a cost effective tool to treat calotrope densities <800plants/ha. Adoption of pasture management practices that promote perennial grasses, in conjunction with strategic chemical control, would further increase the effectiveness and reduce the costs of controlling vast areas of this weed.

Item Type:Article
Business groups:Biosecurity Queensland
Additional Information:© Australian Rangeland Society. Reproduced with permission from © CSIRO Publishing. Access to published version is available via Publisher’s website.
Keywords:Chemical; cut stump; rangelands; spraying; Calotropis; Calotropis procera; Poaceae.
Subjects:Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Pesticides
Science > Invasive Species > Plants > Effect of herbicides
Plant pests and diseases > Weeds, parasitic plants etc
Deposited On:02 Feb 2009 05:19
Last Modified:03 Sep 2021 16:43

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