Re: [Aroid-l] Spider Mites

From: "Alistair Hay" <ajmhay at hotmail.com> on 2007.04.25 at 21:09:23(15589) Predatiory mites known as 'persimilis' are extremely effective. I had the worst outbreak of spider mites I have ever seen in my shadehouse, nursery stock and garden last (Aust) summer and they cleared up the lot in a few weeks. I still haven't seen a single spider mite after 5 months. In terms of safety, effort, result and cost they are far more effective than any spray! +More From: "Michael Marcotrigiano" Reply-To: Discussion of aroids To: "Aroid-L" Subject: Re: [Aroid-l] Spider MitesDate: Wed, 25 Apr 2007 16:00:53 -0400>They like low humidity. That is one of the main reasons they build up.>There are chemical miticides if he is not the "organic" type.>>_______________________________>>Michael Marcotrigiano, Ph.D>Director of the Botanic Garden and Professor of Biological Sciences>Smith College, Lyman Conservatory, College Lane>Northampton, MA 01063>email: mmarcotr@smith.edu>voice: 413-585-2741; fax: 413-585-2744>www.smith.edu/garden>----------------------------------------------------------------------------------->Trees are poems that earth writes upon the sky,>We fell them down and turn them into paper,>That we may record our emptiness.>~ Kahlil Gibran>> >>> "D. Christopher Rogers" 4/25/2007 3:08 PM> >>>>Howdy,>>Anyone have a good method for dealing with spider mites? The keep>popping up>in my friendâ??s greenhouse. They really seem to like Amorphophallus,>Xanthosoma, Alocasia, and Colocasia, ignoring everything else. He has>been>using neem oil, but it seems to kill off leaves. He went to a weaker>concentration, which knocks down the mites immediately and saves the>leaves,>but even after spraying twice a day for two weeks, they just pop right>back>up. They appear to be the two-spotted spider mite.>>Thank you in advance,>Christopher>>D. Christopher Rogers>Invertebrate Ecologist/Taxonomist>((,///////////=====<>>EcoAnalysts, Inc.>(530) 406-1178>166 Buckeye Street>Woodland CA 95695 USA>>? Invertebrate Taxonomy>? Invertebrate Ecological Studies>? Bioassessment and Study Design>? Endangered Invertebrate Species>? Zooplankton>? Periphyton/ Phytoplankton>>Moscow, ID ? Bozeman, MT ? Woodland, CA ? Neosho, MO ? Selinsgrove, PA>www.ecoanalysts.com >>_______________________________________________>Aroid-l mailing list>Aroid-l@gizmoworks.com>http://www.gizmoworks.com/mailman/listinfo/aroid-l _______________________________________________ Aroid-l mailing list Aroid-l@gizmoworks.com http://www.gizmoworks.com/mailman/listinfo/aroid-l

Note: this is a very old post, so no reply function is available.