Phytoparasitica (1997) 25, 283-289

Phyllis G. Weintraub and A.R. Horowitz (1997)
Systemic effects of a neem insecticide on Liriomyza huidobrensis larvae
Phytoparasitica 25 (4), 283-289
Abstract: In an effort to expand the spectrum of larvicides effective against the pea leafminer, Liriomyza huidobrensis (Blanchard), we studied the effects of a neem-based insecticide (Neemix-45) on the development of the leafminer under laboratory conditions. Bean plants were treated with a soil drench of 1, 5, 10 or 25 ppm azadirachtin or by dipping leaves in 1 or 15 ppm azadirachtin at various times before or during the development of the leafminer. Treating the plants with the neem insecticide before exposure to egg-laying adults had a greater effect on inhibiting the development of pupae and adult eclosion than treatment at the 1st-instar larval stage. The systemic effects from a soil drench had a greater adverse effect on pupation and adult eclosion than leaf dipping. Drenching plants with 1 ppm azadirachtin 24 h before exposure to adults had a greater effect (0% adult eclosion) than leaf dipping at the same time period and concentration (15.6% adult eclosion). Similar results were obtained when drenching plants infested with 1st-instar larvae with 1 ppm azadirachtin (11.7% eclosion) vs dipping leaves at the same time period and concentration (44.7% eclosion).
(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): Phyllis G. Weintraub, Abraham Rami Horowitz

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Liriomyza huidobrensis	Beans (Phaseolus)	Israel