chemphlegm
Well-Known Member
sorta, cept the other plants might be showing some issues too if that were the case?
Is This Tobacco Mosaic Virus (TMV)?
- Thread starter Parlika
- Start date
Northernmich
Active Member
Could be ALIENS peein on your girls...
Roger A. Shrubber
Well-Known Member
people keep coming on here and saying "tobacco mosaic virus does not exist in marijuana"...well maybe it don't but its the same fucking thing. the sad thing is theres nothing you can really do about it either way.
i've had a couple of plants with this, and they finished fine. i didn't clone them, didn't want to give it an opportunity to spread, even though i've never seen it spread
i've had a couple of plants with this, and they finished fine. i didn't clone them, didn't want to give it an opportunity to spread, even though i've never seen it spread
chemphlegm
Well-Known Member
I'm thinking its some genetic issue, or one disallowing uptake of something, or a predisposition to certain infections, or alien pee
Northernmich
Active Member
It is real and there are 4 other virus that attack cannabis. also It shows different signs on different strains,, Many think it broad mites Nute problems ect . the photos on the previous page show the hemp virus....
Leaf Color:
– Brown, burnt edges
– Pale color
– Yellowing of new growth
– Yellowing of lower, older leaves
– Yellowing between veins
– Dark or purple in color
– Black or gray patches
– White powdery patches
– Brown, dark spots
– Mottling, mosaic pattern
Leaf Symptoms:
– Upper, newer growth affected
– Lower, older growth affected
– Burnt leaf edges
– Burnt leaf tips
– Death of leaf tips
– Yellowing between veins
– White powdery patches
– Red stems
– Spots
– Mottling, mosaic pattern
– Old leaves fall off
– Slowed growth
– Twisted, abnormal growth
– Leaves curling under or upwards
– Wilting, drooping
– Webbing on leaves
Plant Symptoms:
– Red or purple stems
– Weakened stems
– Old leaves falling off
– Slowed growth
– Twisted, abnormal growth
– Wilting or drooping
– Slowed root growth
Leaf Color:
– Brown, burnt edges
– Pale color
– Yellowing of new growth
– Yellowing of lower, older leaves
– Yellowing between veins
– Dark or purple in color
– Black or gray patches
– White powdery patches
– Brown, dark spots
– Mottling, mosaic pattern
Leaf Symptoms:
– Upper, newer growth affected
– Lower, older growth affected
– Burnt leaf edges
– Burnt leaf tips
– Death of leaf tips
– Yellowing between veins
– White powdery patches
– Red stems
– Spots
– Mottling, mosaic pattern
– Old leaves fall off
– Slowed growth
– Twisted, abnormal growth
– Leaves curling under or upwards
– Wilting, drooping
– Webbing on leaves
Plant Symptoms:
– Red or purple stems
– Weakened stems
– Old leaves falling off
– Slowed growth
– Twisted, abnormal growth
– Wilting or drooping
– Slowed root growth
Northernmich
Active Member
Tobacco mosaic virus (TMV) is named for one of the first plants in which it was found in the 1800s. However, it can infect well over 350 different species of plants.
SouthCross
Well-Known Member
Does boiling tobacco for nicotine tea kill the virus?
Roger A. Shrubber
Well-Known Member
i would think so, but some viruses can live in crazy conditions (undersea volcanic vents, being desiccated for decades) so i wouldn't use an infected plant for anything that might expose other plants to it
Northernmich
Active Member
What are the hosts of TMV?
Pathologists estimate that there could be up to 350 plant species susceptible to TMV. According to Spence et al. in the European Journal of Plant Pathology, some of the more susceptible species that show symptoms are petunia, bacopa, verbena, scaevola, diascia, calibrachoa and lobelia. Some species can be a host for the virus, but not show symptoms.
How stable is TMV?
TMV is an incredibly stable virus. In fact, it is so stable that it can remain in tobacco plants after the extensive processing necessary to make tobacco products.
Why do symptoms differ between infected plants?
Symptoms differ between infected plants depending on the stage of disease severity, the genetic line of the virus and the host plant.
Can tobacco products carry TMV?
Yes, tobacco products can carry the virus and using them without washing your hands afterwards can potentially spread TMV. For that reason, do not use tobacco in the greenhouse or without washing your hands prior to handling plant material.
Can TMV stay viable in plant debris or dead plant material?
Yes, TMV can stay active in dead plant material for long periods of time. It can even stay viable without the presence of a host on surfaces such as greenhouse benches, floors and worker’s clothes.
How effective is spraying plants with milk to prevent the virus from spreading?
Spraying plants with 20 percent nonfat dry milk has been shown to be somewhat effective in preventing the spread of the virus from TMV-infected tobacco plants to uninfected tobacco plants. We recommend spraying plants prior to transplanting to reduce the risk of spreading TMV as part of a methodical management strategy.
How “full-proof” is spraying plugs or liners with milk?
While spraying milk on plugs or liners may have some effectiveness in reducing the spread of TMV, spraying milk should not be the primary management tool for TMV in your greenhouse. In order for milk to inactivate TMV, it must be liquid. Remember to continue scouting, testing, disinfecting and implementing the best sanitation possible in your facility.
How does the milk work to inactivate the virus?
Milk coats the virus and inactivates it.
Is it possible to receive a positive and a negative TMV test result from two different samples on the same plant?
TMV may not be spread equally throughout the plant tissue. Therefore, it is possible to test one leaf on a plant and get a positive TMV result, while another leaf may yield a negative TMV result.
Pathologists estimate that there could be up to 350 plant species susceptible to TMV. According to Spence et al. in the European Journal of Plant Pathology, some of the more susceptible species that show symptoms are petunia, bacopa, verbena, scaevola, diascia, calibrachoa and lobelia. Some species can be a host for the virus, but not show symptoms.
How stable is TMV?
TMV is an incredibly stable virus. In fact, it is so stable that it can remain in tobacco plants after the extensive processing necessary to make tobacco products.
Why do symptoms differ between infected plants?
Symptoms differ between infected plants depending on the stage of disease severity, the genetic line of the virus and the host plant.
Can tobacco products carry TMV?
Yes, tobacco products can carry the virus and using them without washing your hands afterwards can potentially spread TMV. For that reason, do not use tobacco in the greenhouse or without washing your hands prior to handling plant material.
Can TMV stay viable in plant debris or dead plant material?
Yes, TMV can stay active in dead plant material for long periods of time. It can even stay viable without the presence of a host on surfaces such as greenhouse benches, floors and worker’s clothes.
How effective is spraying plants with milk to prevent the virus from spreading?
Spraying plants with 20 percent nonfat dry milk has been shown to be somewhat effective in preventing the spread of the virus from TMV-infected tobacco plants to uninfected tobacco plants. We recommend spraying plants prior to transplanting to reduce the risk of spreading TMV as part of a methodical management strategy.
How “full-proof” is spraying plugs or liners with milk?
While spraying milk on plugs or liners may have some effectiveness in reducing the spread of TMV, spraying milk should not be the primary management tool for TMV in your greenhouse. In order for milk to inactivate TMV, it must be liquid. Remember to continue scouting, testing, disinfecting and implementing the best sanitation possible in your facility.
How does the milk work to inactivate the virus?
Milk coats the virus and inactivates it.
Is it possible to receive a positive and a negative TMV test result from two different samples on the same plant?
TMV may not be spread equally throughout the plant tissue. Therefore, it is possible to test one leaf on a plant and get a positive TMV result, while another leaf may yield a negative TMV result.
Northernmich
Active Member
Is TMV spread by insects?
No, TMV is not spread by the most common greenhouse insects that often vector other viruses, like thrips and aphids. In addition, beneficial insects have not been linked to spreading TMV. However, there are a couple minor exceptions that may only be applicable to certain production facilities. First, pollinators such as bumble bees used in the pollination of some greenhouse crops, like cucumbers and tomatoes, can spread TMV. Also, larger chewing insects – not common in greenhouse production – such as grasshoppers can spread TMV.
Can simply brushing an infected plant and then a non-infected plant spread TMV?
Yes, the slightest brush of clothing infected with TMV was sufficient to spread the virus to uninfected plants, according to a study by Losenge et al.
How can I wash my clothing between work days to ensure that the cloth is not harboring TMV?
Washing clothes with standard amounts of laundry detergent or in milk was effective to inactivate TMV on clothing to prevent spread, according to Losenge et al.
Is there a preferred hand sanitizer on transplant lines?
To our knowledge, there has not been widely published evidence that there is a preferred type of hand sanitizer for TMV. According to the Centers of Disease Control and Prevention, alcohol-based hand sanitizers are effective against human viruses with a membrane, such as Rhinovirus, also known as the common cold. Since TMV does not have a membrane, there is minimal evidence that alcohol-based hand sanitizers will inactive it. We recommend washing your hands with soap and water as frequently as possible.
On a transplanting line, we recommend that the plants be sprayed with a milk solution before going through the machine or transferred by hand. The milk solution on the plants should still be wet as they are transplanted. Employees on a transplanting line should wear gloves and periodically dip their hands in milk solutions for the most effective control.
No, TMV is not spread by the most common greenhouse insects that often vector other viruses, like thrips and aphids. In addition, beneficial insects have not been linked to spreading TMV. However, there are a couple minor exceptions that may only be applicable to certain production facilities. First, pollinators such as bumble bees used in the pollination of some greenhouse crops, like cucumbers and tomatoes, can spread TMV. Also, larger chewing insects – not common in greenhouse production – such as grasshoppers can spread TMV.
Can simply brushing an infected plant and then a non-infected plant spread TMV?
Yes, the slightest brush of clothing infected with TMV was sufficient to spread the virus to uninfected plants, according to a study by Losenge et al.
How can I wash my clothing between work days to ensure that the cloth is not harboring TMV?
Washing clothes with standard amounts of laundry detergent or in milk was effective to inactivate TMV on clothing to prevent spread, according to Losenge et al.
Is there a preferred hand sanitizer on transplant lines?
To our knowledge, there has not been widely published evidence that there is a preferred type of hand sanitizer for TMV. According to the Centers of Disease Control and Prevention, alcohol-based hand sanitizers are effective against human viruses with a membrane, such as Rhinovirus, also known as the common cold. Since TMV does not have a membrane, there is minimal evidence that alcohol-based hand sanitizers will inactive it. We recommend washing your hands with soap and water as frequently as possible.
On a transplanting line, we recommend that the plants be sprayed with a milk solution before going through the machine or transferred by hand. The milk solution on the plants should still be wet as they are transplanted. Employees on a transplanting line should wear gloves and periodically dip their hands in milk solutions for the most effective control.
DirtyEyeball696
Well-Known Member
Check for broadmites!!!
They are super tiny and often ride on fungas gnats
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They are super tiny and often ride on fungas gnats
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DirtyEyeball696
Well-Known Member
You can only get TMV from smoking infected tobacco in your room. 9 out of 10 times it's broad mites. They show the exact same symptoms and they are so small they ride in on fungus gnats. So get a good scope
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chemphlegm
Well-Known Member
marijuana users use tobacco ?
Dr. Who
Well-Known Member
NO TMV IN CANNABIS! Sunn Hemp is a BEAN virus (before you mention that one) Sunn Hemp IS a bean also!
Those little home testers are BS! It might find another virus.....But it's not a mosaic.....They're made by the company that sells the "cure" and that's at a real stupid high price!
There is some sort of viral effecting MJ out west......I know Afgan King has seen it....I suggested a sample be sent to the U of Colorado's Ag dept for testing to determine just what it was......It did not look like any mosaic. The only real way to test with accuracy is lab testing.
TMV and other mosaic's are very easy to transfer plant to plant....Simply touching one and then another can do it. Mostly transferred by "chewing" bugs at distance's....It is not airborne!
Another myth spread by the net!
Dr. Who
Well-Known Member
I'll bet my whole farm it's NOT TMV!
Been doing this a LONG,LONG time. I have personally sent over 350 samples, from differing sources to be tested at MSU.....
NEVER has one come back as positive for ANY "mosaic" !!!!
You had better start searching scholar for all virals that affect the Cannabis family.....Hops has more and some of those can't make the jump to MJ.....
Here's a cpl of important reads:
http://msue.anr.msu.edu/news/virus_visible_in_michigan_hopyards
Note the structure and placement of the symptom's - Nothing like what you see in any of the pictures here eh?
http://www.plantlabs.com/clean-stocks/hop-field-transplants/hop-diseases/
Here are brief descriptions of each Hop viral.....
Do not rely on any internet picture search!
Every picture in this thread can be directly tied to damage by Broad and Russet mites!
Trust me on this one! I've been actively interested in Cannabis virals for over 30 years. Growing for over 44, and have yet to get one single actual virus in any plant. This would include commercial operations...
Here's one last link on Hop viral's:
https://learningstore.uwex.edu/Assets/pdfs/A4053-03.pdf
Roger A. Shrubber
Well-Known Member
well, what is this? everyone seems to know what it isn't. what is it, and what do you do about it if you have it?
i clean with physan 20 and bleach between grows, have an ozone generator that runs on a timer, do everything i can to avoid anything like this, and have had two plants from seed have it. they both grew out and flowered, the worst thing that seems to happen is the deformed, discolored leaves. thats two in four years, i guess thats not bad odds, but i'd still like to know what it is, if its not the only thing i can find after extensive searching that looks anything like it.
i clean with physan 20 and bleach between grows, have an ozone generator that runs on a timer, do everything i can to avoid anything like this, and have had two plants from seed have it. they both grew out and flowered, the worst thing that seems to happen is the deformed, discolored leaves. thats two in four years, i guess thats not bad odds, but i'd still like to know what it is, if its not the only thing i can find after extensive searching that looks anything like it.
DirtyEyeball696
Well-Known Member
Plants under improper lighting
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Northernmich
Active Member
TMV or any of the 5 other virus that can attack cannabis.. Also there are about 50 bacterias that attack cannabis also.. Something is going on hop mosaic virus ,, What it is good question. All I know we did a 100x scope and no mites.
Dr. Who
Well-Known Member
The big point would be. "Is it spreading to others?"
If so. It's time to burn the infected plants (include the rootball and the soil it's in or the media it's in should be soaked in bleach and thrown out)...Do not attempt to "save" them. It's far more important to remove the chance of increasing infection and it remaining a viable problem in any type of grow. Real problems to the perpetual grower!
Run the un-infected out and then do a strong sanitize of the whole grow operation!
As far as not seeing mites...The broads are digging in the connection point of the midrib and the vein.....You tend not to "see" them..They are no bigger around then the small part of the leg of a White fly! They are the ones that give that variegated look to "half" a leaf. They (that) do(es) not spread fast.....at all.
The look of the crinkled/deformed leaf....Looks close to Russet damage.....I tend to doubt it - they spread fast and the damage increases fast. It could also be an odd soil born bacteria infection - another VERY important to "BURN" it problem....Once you get a soil bacterial infection.....There is nothing you can do about it! In nature. It can take as little as 7 years to never, for it to go away!
These soil infections can be moved by insect activity....Some of them are fungal infections
Lastly, that crinkle look could be caused by nutrient/genetic problems. The least likely of the choices, I would say here.....but, stranger things have happened.
It could very well be a "viral" or "soil" infection......but, it's not a MOSAIC!
The bottom line is simple "GET RID OF IT!" Problem solved! The idea of spending money on an anti viral is for commercial ops that can't afford to loose a run! The thing with those is that even once treated. It only slows the virus down. You could harvest it but, you get reduced yields and the virus is still in the product.....Touch - touch = infected plant!
CannaBruh
Well-Known Member
chemD will show these symptoms of half the leaf splotches and hard turning/twisting, but I never saw those symptoms spread to other gals close enough to touch the plant showing issues, everything bloomed out fine and only the chemD carried the issues through cuts and some of the beans I've made with her will show some bleach splotching but not the sickly faded yellow, more of a full on bleach spots.