Buitenhuis Rosemarije, Shipp J Les, Jandricic Sarah, Murphy Graeme, Short Mike
Agriculture and Agri-Food Canada, Greenhouse and Processing Crops Research Centre, Harrow, ON, Canada.
Pest Manag Sci. 2007 Sep;63(9):910-7. doi: 10.1002/ps.1426.
The effectiveness of trap cropping as an integrated control strategy against western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), was explored in potted chrysanthemum, Dendranthema grandiflora (Tzvelev), greenhouse crops. The efficacy of flowering chrysanthemum trap plants, either treated with the insecticide spinosad or untreated, to regulate F. occidentalis populations was tested at different spatial scales (small cage, large cage and commercial greenhouse) and for different time periods (1 or 4 weeks). It was demonstrated that flowering chrysanthemums as trap plants lower the number of adult F. occidentalis in a vegetative chrysanthemum crop and, as a result, reduce crop damage. In the 4 week large-cage trial and the commercial trial, significant differences between the control and the trap plant treatments started to appear in the third week of the experiment. Larvae were only significantly reduced by the presence of trap plants in the 1 week small-cage trials. There were no significant differences between treatments with spinosad-treated and untreated trap plants in the number of F. occidentalis on the crop. This suggests that there was minimal movement of adult F. occidentalis back and forth between the trap plants and the crop to feed and oviposit. It is concluded that the trap plant strategy is a useful tool for integrated pest management against F. occidentalis in greenhouses.
在盆栽菊花（Dendranthema grandiflora (Tzvelev)）温室作物中，研究了诱集作物作为一种综合防治策略对西花蓟马（Frankliniella occidentalis (Pergande)，缨翅目：蓟马科）的防治效果。在不同空间尺度（小笼、大笼和商业温室）和不同时间段（1周或4周），测试了用杀虫剂多杀菌素处理或未处理的开花菊花诱集植物对西花蓟马种群数量的调控效果。结果表明，开花菊花作为诱集植物可降低营养期菊花作物中西花蓟马成虫的数量，从而减少作物损害。在为期4周的大笼试验和商业试验中，对照处理和诱集植物处理之间的显著差异在实验的第三周开始显现。在为期1周的小笼试验中，只有诱集植物的存在显著减少了幼虫数量。在用多杀菌素处理和未处理的诱集植物的处理之间，作物上西花蓟马的数量没有显著差异。这表明西花蓟马成虫在诱集植物和作物之间来回取食和产卵的移动极少。得出的结论是，诱集植物策略是温室中西花蓟马综合害虫管理的一种有用工具。
