Help Me Identify this Virus, Please! - Page 2

dice · February 25, 2013

Whitefly control method: http://www.tomatoville.com/showthread.php?t=25557

Tonio · February 26, 2013

clarified hydrophobic neem extract uses alcohol to seperate the oil, and the azidarachtin is basically removed.

Tests have shown that azadirachtin is effective in some cases at concentrations as low as 1 ppm, but some producers use alcohol or steam in the extraction of neem oil from plant parts, which causes the azadirachtin to be removed from the oil or diminishes the amount of azadirachtin in the product as well as its effectiveness.

http://www.co2extract.com/neem_soft_extract.html

Better product is the cold pressed neem oil for the actual azadirachtin.

coolbythecoast · February 26, 2013

I just purchased 16 oz of cold pressed neem oil on ebay for about $18 including shipping. No way to know if product is actually as described, but seller has 99.7% satisfied customers, so that is a plus!

Crandrew · February 26, 2013

Coolbythecoast you realize you live in an area with the highest concentration of hydroponics shops, this side of Oakland. Any of those shops would have a version or pre-mixed of cold pressed Neem Oil. I buy a new batch each year and so far haven't found store that didnt have it.

coolbythecoast · May 11, 2015

Found out that it's not a virus. Caused by potato psyllid, either Psyllid Yellows or Candidatus Liberibacter Solanacearum, or both! Becoming more and more of a problem in Southwest regions that are frost free, even though it is a best kept secret. To know more: http://ucanr.edu/sites/VCMG/Tomato_Psyllid_Infestation/

February 25, 2013	#16
dice Tomatovillian™ Join Date: Jan 2007 Location: PNW Posts: 4,743	Whitefly control method: http://www.tomatoville.com/showthread.php?t=25557 __________________ -- alias

February 26, 2013	#17
Tonio Tomatovillian™ Join Date: May 2012 Location: San Diego, CA Posts: 148	clarified hydrophobic neem extract uses alcohol to seperate the oil, and the azidarachtin is basically removed. Tests have shown that azadirachtin is effective in some cases at concentrations as low as 1 ppm, but some producers use alcohol or steam in the extraction of neem oil from plant parts, which causes the azadirachtin to be removed from the oil or diminishes the amount of azadirachtin in the product as well as its effectiveness. http://www.co2extract.com/neem_soft_extract.html Better product is the cold pressed neem oil for the actual azadirachtin. Last edited by Tonio; February 26, 2013 at 01:23 AM.

February 26, 2013	#18
coolbythecoast Tomatovillian™ Join Date: May 2007 Location: SoCal Posts: 39	I just purchased 16 oz of cold pressed neem oil on ebay for about $18 including shipping. No way to know if product is actually as described, but seller has 99.7% satisfied customers, so that is a plus!

February 26, 2013	#19
Crandrew Tomatovillian™ Join Date: Apr 2012 Location: asdf Posts: 1,202	Coolbythecoast you realize you live in an area with the highest concentration of hydroponics shops, this side of Oakland. Any of those shops would have a version or pre-mixed of cold pressed Neem Oil. I buy a new batch each year and so far haven't found store that didnt have it.

May 11, 2015	#20
coolbythecoast Tomatovillian™ Join Date: May 2007 Location: SoCal Posts: 39	Found out that it's not a virus. Caused by potato psyllid, either Psyllid Yellows or Candidatus Liberibacter Solanacearum, or both! Becoming more and more of a problem in Southwest regions that are frost free, even though it is a best kept secret. To know more: http://ucanr.edu/sites/VCMG/Tomato_Psyllid_Infestation/