Re: Re re Fungus gnats

From: neal foster nealfost at umich.edu> on 2000.04.06 at 01:45:42(4345) Isn't there a commercial product called Gnatrol which contains Bacillus thuringensis and which has been found to be pretty effective against the larval stage under greenhouse conditions? --Neal +More ---------------------------------------------------------------------------- --- at 04:41 PM 04/05/2000 -0500, Bonaventure W Magrys wrote: >Unfortunately the indoor Ari's soil mix contains peat, cow manure, old orchid >potting media, ect. They have been growing now at drying conditions but still >the gnats. Malathion, diazinon, and other sprays/drenches are only temporary, >cannot do with every watering. Mothballs strategically placed however, recently >have been doing the trick. Maybe some cinnamon powder ( good for those >unfortunate rots - no problem at this time) may also have insect repellant >properties. >Bonaventure > >Denis on 04/03/2000 06:02:16 PM >Please respond to aroid-l@mobot.org > > > >To: Multiple recipients of list AROID-L >cc: (bcc: Bonaventure W Magrys/ADM/SHU) > >Subject: Re: Fungus gnats > > > > >Fungus gnats are common in places that stay too moist and damp and have lots of >decaying vegetable matter to feed their larvae. Your first course of action >should be to remove the conditions that are allowing the critters to breed and >thrive, improve santitation under benches etc. If this doesn't help then go to >the heavy duty insecticides, Dursban etc. > >Paul Kruse wrote: > >> Fungus gnats not only feed on fungus, but the larvae may also feed on plant >> roots or even enter plant stems. >> The following chemicals have been used to control these pests. Be aware >> that some chemicals might not be safe for certain plants. >> Approved for greenhouse and interiorscape use: chlorpyrifos (Duraguard), >> diazonon, and resmethrin. >> Paul Kruse > > >

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