International Journal of Pest Management (2008) 54, 247-253
Bao-Li Qiu, Nasser S. Mandour, Cai-Xia Xu and Shun-Xiang Ren (2008)
Evaluation of the entomopathogenic nematode Steinernema feltiae as a biological control agent of the whitefly, Bemisia tabaci
International Journal of Pest Management 54 (3), 247-253
Abstract: We evaluated the potential for using infective juveniles of the entomopathogenic nematode Steinernema feltiae to control the sweetpotato whitefly Bemisia tabaci B biotype on cucumber, hibiscus, and collard, under greenhouse conditions. The effects of four adjuvants (PVA, glycerol, Triton X-100, and horticultural spraying oil) on the efficiency of Steinernema feltiae in B. tabaci control were also assessed because they might increase nematode survival by reducing desiccation. The mortality of B. tabaci nymphs increased by 18, 18, and 20% on collard, hibiscus, and cucumber plants when S. feltiae concentration increased from 5000 to 15,000 infective juveniles/mL. When treated with S. feltiae (10000 infective juveniles/mL), second instar nymphs suffered greater mortality than the other instars of B. tabaci, regardless of host plant species. Mortality of B. tabaci nymphs was higher on hibiscus than on collard and cucumber plants. The use of adjuvants greatly increased infection of B. tabaci by S. feltiae. The combination of S. feltiae (10,000 infective juveniles/mL) and 1% horticultural spraying oil increased the mortality of second instar B. tabaci nymphs to 86% on collard and 90% on hibiscus, while the combination of S. feltiae and 0.1% Triton X-100 caused 83% mortality on collard and 89% on hibiscus. The potential for incorporating S. feltiae and the adjuvants in B. tabaci management is discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Bao-Li Qiu, Shun-Xiang Ren
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection
