[CH] TMV
Byron (Byron.bromley@Gsd-Co.Com)
Wed, 16 Jun 1999 16:44:34 -0400
Peter
>>Do you recommend the indiscriminate use of raw tobacco products
on pepper plants?>>
If you look at the formula, This does not use raw tobacco as an
end appliction.
I believe if one takes a product, simmers or boils it to extract
part of the raw procduct, the end results is a processed product
Correct ? Something like making a cup of tea.
>>Do you think that when discussing a product that uses raw
tobacco products, that information on possible TMV infection
of pepper plants should be included? Note that the produced
product is not the only possible infection vector.>>
The only source of inforamtion on the web That I can find that the
TMV can survive the heat, dishsoap and ethanol is you.
>>Your post is interesting and shows a lot of research for the
>>reason that somehow you believe that you are right and have
>>been victimized. Not good reasons. Some of your conclusions are
>>made without actual evidence.
>>The original point was that raw tobacco products are a
>>potential source of TMV. There is ample evidence of this in
>>your research. As such you have posted nothing to contradict
>>that statement. In that case such products should be treated
>>with caution and if recommending there use a warning should be
>>issued.
I agree that raw tobacco products are a vector in the spread of TMV
I did not even attempt to contradict that statement. But as I pointed out
there are 149 other plants that can host TMV besides tobacco. And this is
why some folks are getting TMV with no tobacco for miles around, don't
use tobacco product and never had. .
From the data I could find, tobacco is a very minor source of infection
as compared to all the other possibilties.
The amount of reported TMV I found in tobacco was less than the
amount of TMV reported in Calif in Sweet Bell Peppers.
>>This has nothing to do with your mixture nor was it an
>>indication that tobacco products could not be used. It has
>>everything to do with being informative and making people aware
>>of the risks. That possibly they should not go out and buy a
>>bag of tobacco dust and sprinkle it all over their plants.
Belive it or not there is a product on the market that is Tobacco Dust
It is manufactured and sold as a pesticide
>>[Viable for 40 years in debris and 4 months on seeds] is
>>contradictory. Seeds are debris. I believe that 3000 days is
>>more correct.
Can you sustantiate that TMV can survive on a seed coat for 3000 days
or a little over 8 years ? I know a few Plant Pathologist that would like
to see that data.
I have not seen this time frame listed, I just went by the data I recieved
from 2 Directors of Plant Pathology and a few US Aggie Schools
>>The tobacco industry as is my understanding has for some
>>considerable years been developing resistant strains. Your
>>figures quoted for this industry do not reflect infected plants
>>but damage of the leaf due to infection. Not quite the same
>>thing. This I pointed out to you but it is now conveniently
>>ignored. Note resistant does not mean immune or non carrier.
This was out the realm of my post. But yes, as a matter of fact Burley
tobacco was one of the first. With repeated plantings and removal
of all crop debris, this particular variety has been TMV free for a number
of years. (1/2 the US crop)
>>There are many resistant strains/varieties of peppers as well.
>>If such strain was infected how would the average gardener know?
>>Need I say again anecdotal evidence should be treated with
>>extreme caution.
Most plants that are infected with TMV have a stunted growth and in
the case of fruiting/pod crops very poor production.
>>More than I wanted to say but it will be all I have to say.
>>Peter.
Just as a footnote, I did not pull this data off the top of my chair. Most
of this data was discussed the 2 Directors of Plant Pathology another
with a PHD in plant pathology, a few chemist and a few other CH'ers
Most of the data was confirmed by 2 or more sites, I did not include all
of them to try to keep the length down, and some sites were real flakey
so I did not list them.