Entomologia Sinica (1995) 2, 64-69

Ping Jin, Xiaojun Pan and Shanhuan Zhao (Shin-foon Chiu) (1995)
Toxicity and growth-regulating activity of a neem seed kernel extract (Azal-S) to the larvae of Culex quinquefasciatus
Entomologia Sinica 2 (1), 64-69
Abstract: Toxicity of a neem seed kernel extract (AZAL-S) was assessed under laboratory conditions against larvae of Culex quinquefasciatus. The LC₅₀ value for AZAL-S was 0.78× 10-6. Exposure of 4th instar larvae to 0. 3× 10-6 and 0. 5× 10-6 AZAL-S for 120 hours caused 46. 2% and 67. 5% mortality respectively, with various types of morphogenetic aberration. AZAL-S induced an obvious prologation of the larval period when 1st instar larvae were treated with 0. 4-1. 0× 10-6 AZAL-S for 7 days. The insect growth regulating effect of AZAL-S on mosquito larvae was similar to those reported for certain insect growth regulators.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website

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.
	Culex quinquefasciatus