Biological Control #4 Bacillus Thuringiensis israelensis - Organic Soil - International Cannagraphic Magazine Forums

Arkady2300 · 11-02-2011, 12:13 AM

Bacillus thuringiensis serovar israelensis (Bti) is a group of bacteria used as biological control agents for larvae stages of certain Dipterans. Bti produces toxins which are effective in killing various species of mosquitoes, fungus gnats, and blackflies, while having almost no effect on other organisms. Indeed this is one of the major advantages of B. thuringiensis products in general is that they are thought to affect few non-target species. (from wikipedia)

You can apply mosquito dunks to your reservoirs or compost teas.

Commerical formulation are found in:

Microbeman · 11-02-2011, 08:20 PM

I would want to test the effects on compost tea organisms before recommending adding this to compost tea. I do not say this because I believe they would be actively effected by the Thuringiensis israelensis spores but I have found that adding anything to CT can have a 'smothering' effect causing die off or dormancy..

I have used Thuringiensis israelensis spores in the form of Vectobac (less expensive form in bulk) to very effectively control mosquitos. When the larvae eat the spore, it kills them. It does not effect other larvae like dragon fly which eat mosquitos.

guest2012y · 11-03-2011, 05:21 AM

Ok..who's using Actinovate for Fungus Gnats? I hear rumors!

silver hawaiian · 11-11-2011, 01:11 AM

CC1

Not for fungus gnats, but I just picked some up tonight to help in my PM plight..

Fingers crossed..

rrog · 11-11-2011, 01:21 AM

The BTI won't reproduce, as a side note. Predatory Nematodes like Steinernema feltiae will reproduce, unless the BTI bacteria is present. They do a hell of a job in combination, but neither will reproduce if used simultaneously.

Also BTI won't combat root aphids.

Microbeman · 11-11-2011, 07:02 PM

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rrog · 11-13-2011, 02:23 AM

I like the concept of using beauveria bassiana fungus from either Botanigard or Naturalis, but WOW is that stuff expensive. Worse than nematodes, even

guest2012y · 11-13-2011, 05:21 AM

Quote:

Originally Posted by Microbeman

Actinovate is Streptomyces lydicus (bacteria). I'd be very interested to know if it is effect against PM

Well you're in luck. I just found some PM near my cool air intake and I have some Actinovate. Trial test this week,I'll let you know what becomes of it. I'm assuming it will be one of those things where continued applications are needed every few days..who knows.

GeorgeSmiley · 11-13-2011, 05:46 AM

Edited

guest2012y · 11-13-2011, 05:58 AM

.....

11-02-2011, 12:13 AM	#1
Arkady2300 Member Join Date: Mar 2009 Posts: 103	Biological Control #4 Bacillus Thuringiensis israelensis Bacillus thuringiensis serovar israelensis (Bti) is a group of bacteria used as biological control agents for larvae stages of certain Dipterans. Bti produces toxins which are effective in killing various species of mosquitoes, fungus gnats, and blackflies, while having almost no effect on other organisms. Indeed this is one of the major advantages of B. thuringiensis products in general is that they are thought to affect few non-target species. (from wikipedia) You can apply mosquito dunks to your reservoirs or compost teas. Commerical formulation are found in: Attached Thumbnails __________________ Sadhu in a Tent. Mandala #1. Lex Dubia Non Obligat
	Quote 1 members found this post helpful.

11-02-2011, 08:20 PM	#2
Microbeman The Logical Gardener Join Date: Apr 2008 Posts: 4,436	I would want to test the effects on compost tea organisms before recommending adding this to compost tea. I do not say this because I believe they would be actively effected by the Thuringiensis israelensis spores but I have found that adding anything to CT can have a 'smothering' effect causing die off or dormancy.. I have used Thuringiensis israelensis spores in the form of Vectobac (less expensive form in bulk) to very effectively control mosquitos. When the larvae eat the spore, it kills them. It does not effect other larvae like dragon fly which eat mosquitos. __________________ Anybody can be wrong about anything. "When the facts change, I change my mind. What do you do, sir?" "Capitalism is the astounding belief that the most wickedest of men will do the most wickedest of things for the greatest good of everyone." ~John Maynard Keynes~ Sorry: No questions by PM, check my webpage
	Quote 2 members found this post helpful.

11-03-2011, 05:21 AM	#3
guest2012y Living with the soil Join Date: Dec 2009 Location: Forested area Posts: 2,926	Ok..who's using Actinovate for Fungus Gnats? I hear rumors! __________________ BMR in flower https://www.icmag.com/ic/showthread.php?t=170303 Topsoil in the soil mix https://www.icmag.com/ic/showthread.php?t=153542 Provider for cardholders organic medicine and organic medicated edibles..."we're primed and we're ready to go toe to toe with disease"
	Quote

11-11-2011, 01:21 AM	#5
rrog Senior Member Join Date: Oct 2008 Posts: 2,978	The BTI won't reproduce, as a side note. Predatory Nematodes like Steinernema feltiae will reproduce, unless the BTI bacteria is present. They do a hell of a job in combination, but neither will reproduce if used simultaneously. Also BTI won't combat root aphids. __________________ __________________ OVERGROW with SOIL Fully Medical MJ Compliant
	Quote 2 members found this post helpful.

11-11-2011, 07:02 PM	#6
Microbeman The Logical Gardener Join Date: Apr 2008 Posts: 4,436	------ __________________ Anybody can be wrong about anything. "When the facts change, I change my mind. What do you do, sir?" "Capitalism is the astounding belief that the most wickedest of men will do the most wickedest of things for the greatest good of everyone." ~John Maynard Keynes~ Sorry: No questions by PM, check my webpage Last edited by Microbeman; 11-13-2011 at 07:36 PM..
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11-11-2011, 01:11 AM	#4
silver hawaiian Senior Member Join Date: Feb 2011 Posts: 4,906	CC1 Not for fungus gnats, but I just picked some up tonight to help in my PM plight.. Fingers crossed.. __________________ Current project: ..Right here. Seriously, just click it. Completed: . . ... More vert lerv . . . . . . . Blumats, vert, n' dirt "Then they took me by the hand, and they invited me right in.. Then they showed me something, I don't even know where to begin.."
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11-13-2011, 02:23 AM	#7
rrog Senior Member Join Date: Oct 2008 Posts: 2,978	I like the concept of using beauveria bassiana fungus from either Botanigard or Naturalis, but WOW is that stuff expensive. Worse than nematodes, even __________________ __________________ OVERGROW with SOIL Fully Medical MJ Compliant
	Quote

11-13-2011, 05:46 AM	#9
GeorgeSmiley Remembers Join Date: Feb 2008 Location: Ya can't get there from here Posts: 1,865	Edited Last edited by GeorgeSmiley; 11-13-2011 at 05:45 PM..
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11-13-2011, 05:58 AM	#10
guest2012y Living with the soil Join Date: Dec 2009 Location: Forested area Posts: 2,926	..... __________________ BMR in flower https://www.icmag.com/ic/showthread.php?t=170303 Topsoil in the soil mix https://www.icmag.com/ic/showthread.php?t=153542 Provider for cardholders organic medicine and organic medicated edibles..."we're primed and we're ready to go toe to toe with disease" Last edited by Capt.Cheeze1; 11-13-2011 at 05:50 PM..
	Quote 1 members found this post helpful.