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Thrips incidence in green beans and the degree of damage caused

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Duff, J. D., Church, C. E., Healey, M. A. and Senior, L. J. (2015) Thrips incidence in green beans and the degree of damage caused. Acta Horticulturae, 1105 . pp. 19-26.

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Article Link: http://dx.doi.org/10.17660/ActaHortic.2015.1105.3


Green bean production accounts for 2.4% of the total value of Australian vegetable production and was Australia's tenth largest vegetable crop in 2008-2009 by value. Australian green bean production is concentrated in Queensland (51%) and Tasmania (34%) where lost productivity as a direct result of insect damage is recognised as a key threat to the industry (AUSVEG, 2011). Green beans attract a wide range of insect pests, with thrips causing the most damage to the harvestable product, the pod. Thrips populations were monitored in green bean crops in the Gatton Research Facility, Lockyer Valley, South-east Queensland, Australia from 2002-2011. Field trials were conducted to identify the thrips species present, to record fluctuation in abundance during the season and assess pod damage as a direct result of thrips. Thirteen species of thrips were recorded during this time on bean plantings, with six dominant species being collected during most of the growing season: Frankliniella occidentalis, F. schultzei, Megalurothrips usitatus, Pseudanaphothrips achaetus, Thrips imaginis and T. tabaci. Thrips numbers ranged from less than one thrips per flower to as high as 5.39 thrips per flower. The highest incidence of thrips presence found in October/November 2008, resulted in 10.74% unmarketable pods due to thrips damage, while the lowest number of thrips recorded in April 2008 caused a productivity loss of 36.65% of pods as a result of thrips damage.

Item Type:Article
Business groups:Horticulture and Forestry Science
Keywords:Frankliniella occidentalis Insecticide trials Megalurothrips usitatus Phaseolus vulgaris Seasonal abundance
Subjects:Plant culture > Vegetables
Plant pests and diseases
Plant pests and diseases > Individual or types of plants or trees
Live Archive:29 Jul 2016 03:16
Last Modified:13 Dec 2022 22:31

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