| resistance to spinosad in the western flower thrips, frankliniella occidentalis (pergande), in greenhouses of south-eastern spain. | susceptibility to spinosad of western flower thrips (wft), frankliniella occidentalis (pergande), from south-eastern spain was determined. lc(50) values of the field populations without previous exposure to spinosad collected in murcia in 2001 and 2002 ranged from 0.005 to 0.077 mg l(-1). the populations collected in almeria in 2003 in greenhouses were resistant to spinosad (lc(50) > 54 mg l(-1)) compared with the authors' highly susceptible laboratory strain. the highly sensitive laboratory str ... | 2007 | 17487830 |
| impact of production system on development of insecticide resistance in frankliniella occidentalis (thysanoptera: thripidae). | the western flower thrips, frankliniella occidentalis (pergande) (thysanoptera: thripidae), has become one of the most difficult insects to control in the intensive agriculture of southeastern spain. however, resistance problems are quite different in two neighboring areas, murcia and almeria, with distinct production systems. thirty-six field populations of western flower thrips from sweet pepper crops were collected in two different dates in murcia and almeria in 2005 and 2006. western flower ... | 2008 | 18950052 |