Re: Safers soap, and nicotine concentrations
Wayne Forrester (forrestr@mendel.Berkeley.EDU)
Tue, 13 Aug 1996 08:04:31 -0700 (PDT)
Hi, 
	I missed the original post about using a cigarette tea. This is a 
topic that comes up with some regularity on both the CP listserv, and on 
the orchid newsgroup. The use of any plant extract such as cigarette tea 
is very controversial. The problem is that you may risk infecting your 
plants with a plant virus. Although many viruses have a very restricted 
host range, others are quite general. For example, tobacco mosaic virus 
is apparently quite capable of infecting tomatoes and at least some types 
of orchids in addition to tobacco. I know of no studies examining viruses 
in CP, but it is always a risk when applying a "tea" made from plant 
products. Given the large number of effective, and relatively safe, 
pesticides available I don't think the use of a cigarette tea is wise. 
Just something to keep in mind. 
Wayne Forrester
forrestr@mendel.berkeley.edu