Tobacco Mosaic Virus! Serious! With pics!

blastyblast

Active Member
TELL ME IT'S NOT TRUE... THIS FUCKING BLOWS

Tobacco Mosaic virus - The tobacco mosaic virus can attack a wide range of plants, including tomato, pepper, eggplant, tobacco, spinach, petunia, marigold, and our beloved herb marijuana. On marijuana the virus infection causes light and dark green mottled areas on the leaves. The dark green areas tend to be somewhat thicker than the lighter portions of the leaf. The leaf mottling is seen more easily if the affected plant surface is partially shaded. Stunting of young plants is common and often is accompanied by a distortion and fern-like appearance of the leaves. Older leaves curl downward and may be slightly distorted. Certain strains of the virus can cause a mottling, streaking and necrosis of the buds. Infected plants are not killed, but they produce poor quality buds and low yields. Tobacco mosaic, is incited by a virus. The tobacco mosaic virus is very stable and can persist in contaminated soil, in infected plant debris, on or in the seed coat, and in manufactured tobacco products. The virus is transmitted readily from plant to plant by mechanical means. This may simply involve picking up the virus while working with infected plant material, then inoculating healthy plants by rubbing or brushing against them with contaminated tools, clothing, or hands. Aphids are not vectors of the virus, although certain chewing insects may transmit the pathogen.

Solution - Virus diseases cannot be controlled once the plant is infected. Therefore, every effort should be made to prevent introduction of virus diseases into the garden. Sanitation is the primary means of controlling virus diseases. Infected plants should be removed immediately to prevent spread of the pathogens. The use of tobacco products during cultural practices should be avoided to prevent inoculation of plants with the tobacco mosaic virus. Those people using tobacco or working with infected plant material should wash their hands thoroughly in soapy water before handling your plants.

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Marley15

Well-Known Member
Interesting..

I have a few leaves that are showing similarities to yours. The tips are curling to the side and have strange miscolored blotches on them..a bit troubling.

Marley
 

blastyblast

Active Member
I know!!! I have 6 other plants in the grow room. none of them are showing signs yet. but i have shuffled the plants and turned them in the grow area
 

pugwarlord

Active Member
looks to me the curling is quite possibly from heat stress, and yellowing is natural during flowering as the nitrogen dissipates from the leaves the stop from growing and just produce its flowers
 

blastyblast

Active Member
ok, here's the million dollar question. would you put this plant back with your other plants? none of the other white russians are showing signs of heat stress, or symptoms that this one is showing
 

Bublonichronic

Well-Known Member
ok, here's the million dollar question. would you put this plant back with your other plants? none of the other white russians are showing signs of heat stress, or symptoms that this one is showing
yes, i would put it back with my plants...then i would try to figure out what im doing wrong...
 

B0nedocta

Member
yeah, it really doesn't look like a virus. its natural for flowering plants to begin to turn yellow over time, plus it looks like a bit of heat stress. a few plants may show it if they are weaker than the rest, maybe through genetics.
 

K21701

Active Member
What are the ppm's of the nutes and the ph of the water you are giving them? If you started them out on full strength then flush them and start nutes at 1/4 or 1/2 strength....
 

blastyblast

Active Member
the water ph after I add the nutes is around 6-6.5 (GH liquid ph tester, not digital). I am using botanicare cns17 bloom. I have slowly increased the nutes about 2.5 ml every other watering. now these are hydro nutes that I bought with the intention of doing DWC. I will flush today. but i am still nervous putting it back. see this link, my plants look similar to the TMV on this page, about halfway down http://www.growery.org/forums/showflat.php/Number/190149
 

Marley15

Well-Known Member
Hey Blasty what strain is that. I've been doing some research on TMV for the last hour or so and it appears to be somewhat prevalent in the Cali Connect strains..lots of OG's and Chem strains.

My issue is on a Larry OG clone I got from a local dispensary.

peace,

Marley
 

blastyblast

Active Member
this is a White Russian FEM from seed. got it from www.Marijuana-seeds.nl it is about 2.5 weeks in 12/12. bud growth is still going great but the top leaves around the buds are getting more and more mottled and curled like a blade.
 

Marley15

Well-Known Member
Not sure what to do at this point. There are test strips you can purchase online to determine if the plants have it. They are like $30 for 5 strips..

I'm about to flip the switch this weekend and really don't wanna waste time on a plant that may yield garbage.

Grrr.


Marley
 

MomaPug

Active Member
I must say, by looking at the pictures in the link your provided.....it does look the same as the example. I have had spots, and I have had curling.....but not the "sidways" type of curling you show in your pictures....my experience has always been leaves curling "under" and it was always my error, not the plants.
Keep us posted!
 

blastyblast

Active Member
yea, it looks just like it, huh, fuck! well, now I got to make a decision, should I get rid of it or wait to see if the others come down with this? I'm not sure yet. I may make a new growbox and keep it in a separate room. we'll see. this a major monkeywrench in an otherwise very nice grow.
 

MomaPug

Active Member
"In some cases, spraying milk on the host plant is known to inhibit the TMV infection."

Other than that, there seems to be no real answer on the net that I can find...and milk sounds far fetched to me!

I would separate her and keep blooming her if I could. After all, marijuana has a pretty short cycle and it may not devastate the plant altogether.
 
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