Effects of neemgard on phytophagous and predacious mites and on Spiders

The efficacy of crude aqueous extracts of some plants as grain protectants against the stored grain mite, Rhizoglyphus tritici

“…In the present study, A. indica extract at concentrations of 50% and 100% resulted in more than 50% efficacy at each exposure interval (7, 14, 21, and 28 days), and all concentrations of A. indica extract (except 6.25%) resulted in more than 50% efficacy after an exposure interval of 28 days. These results are in accordance with those of Mansour et al (1986Mansour et al ( , 1997, who reported the high toxicity of 1% A. indica formulations to Tetranychus cinnabarinus (Boisd.). Sundaram and Sloane (1995) also reported that pure azadirachtin had strong acaricidal effects against T. urticae.…”

“…Exposure-interval-dependent variation in the percent efficacy of all tested plant extracts against mites may be attributable to the longer exposure of mites to treated grains, which increases the probability of contact of mites with the treated grains and, ultimately, with the toxic compound(s) of plant extracts. EC 50 Mansour et al 1986Mansour et al , 1997Sundaram and Sloane 1995;Dahroug et al 2000;Guirado et al 2001;Jazzar et al 2003;Mateeva et al 2003;Mansor et al 2004;Thevan et al 2005;Antonious et al 2006;Chiffelle et al 2009;Kumral et al 2010;Abbasipour et al 2011;Yanar et al 2011).…”

Acaricides - Biological Profiles, Effects and Uses in Modern Crop Protection

“…The effects of azadirachtin on treated insects manifest slowly and they include complete or partial antifeedant response, delayed and/or disrupted moulting, inhibited reproduction (Copping & Duke, 2007;Isman & Akhtar, 2007). The studies on spider mites (Sundaram & Sloane, 1995;Mansour et al, 1997;Martinez-Villar et al, 2005) indicate that azadirachtin, in addition to being toxic to various development stages, acts as antifeedant, reduces fecundity and fertility and shortens the life span of adult insects. Beside on spider mites, azadirachtin also exhibits acaricidal effect on some acarid and tarsonemid mites (Collins, 2006;Venzon et al, 2008).…”

Effectiveness of azadirachtin (NeemAzal-T/S) in controlling pear psylla (Cacopsylla pyri) and European red mite (Panonychus ulmi)

“…As a result, there is a constant need for having new acaricides of different modes of activity available in order to expand their choice over the season. Tested against spider mites in laboratory, greenhouse and field trials, neem-based products have shown di- rect toxic effects on different development stages, feeding and oviposition deterrence, reduction in fecundity, fertility and longevity (Sundaram and Sloane, 1995;Mansour et al, 1997;Hiiesaar et al, 1998;Kashenge and Makundi, 2001;Kleeberg and Hummel, 2001;Chiasson et al, 2004;Martinez-Villar et al, 2005). The extent of these effects was dependent on the type of formulations of the neem products.…”