US Nicotiana Germplasm Collection 2013 Nursery

[JessicaNicot]

No it was in a soil cube wide open cept for other starts and was outside in the sun very little
This was the only tobacco strain to do it

the PHYB lines (there are 2) are actually NOT a true tobacco. they are the result of the fusion of the cytoplasm of tobacco with petunia, or a nuclear transfer into petunia. i cant remember which at the moment. the spots look like simple "bruising" that usually comes from some form of mechanical damage, or sometimes scald like Knucklehead was saying.

 

[JessicaNicot]

so i dug up some of last year's critter pictures. is this a manduca moth?




these are some pics of the bees here in NC. i guess they must be immune to the nicotine.

 

[Boboro]

Ive had this in my garden for 2 years and it kills the plants. got any ideals.

 

[JessicaNicot]

so i went out to the field yesterday.




i learned from the tobacco foreman at the station that tobacco will have a higer incidence of command damage when the plants are stressed (such as the unusually cool spring we've had here this year). i think about one-fifth of my plots are displaying some level of command damage this year. the pic below i included because of the impact of the stress aspect. the 3 plants to the left in this plot are perfectly healthy with no damage. the 2 on the right were apparently very tall and/or were not set deep enough into the soil when they were transplanted. these 2 plants are unhappy and showing it in a big way.




so i've seen a lot of interesting phenotypes in the germplasm grow outs over the last 5 years, but this is definitely up there on the list of odd. i dont have my list with me right now to figure out what this variety is. i'll try to post an edit tomorrow with the name.

 

[JessicaNicot]

View attachment 5520Ive had this in my garden for 2 years and it kills the plants. got any ideals.

this is Tomato Spotted Wilt Virus (TSWV). there is no known resistance in any tobacco cultivar and only one extremely poor quality experimental line with resistance which we've bred and bred but have had no luck breaking the linkage between the resistance and the awful quality traits. it is transmitted by insects called thrips. if you see it year after year, you may want to look into an immune system boosting product called Admire, also known as imidacloprid. it boosts the immune system of the plant which helps it better ward off an infection with TSWV and other pathogens. however, there have been studies shown that it will *slightly* reduce your yields but most of you are on a small enough scale where i dont think you should even see an impact.

 

[deluxestogie]

That moth looks pretty beat up, but the arched, pointed abdomen does not seem to resemble a mature Manduca sexta, which often has an array of bilateral spots arranged segmentally, and a somewhat more blunt tip to the abdomen. But I believe the colors change during the life cycle. With those curled up wings, it may have just emerged, and hasn't yet dried out.

With my free-range, organic, sustainable green approach to pest management and the fine balance of nature, if it's big enough to be a hornworm moth, it's a dead moth.

Bob

 

[skychaser]

Man, That is one ugly bug.

The unknown plant looks a lot like One Sucker to me.

 

[Boboro]

this is Tomato Spotted Wilt Virus (TSWV). there is no known resistance in any tobacco cultivar and only one extremely poor quality experimental line with resistance which we've bred and bred but have had no luck breaking the linkage between the resistance and the awful quality traits. it is transmitted by insects called thrips. if you see it year after year, you may want to look into an immune system boosting product called Admire, also known as imidacloprid. it boosts the immune system of the plant which helps it better ward off an infection with TSWV and other pathogens. however, there have been studies shown that it will *slightly* reduce your yields but most of you are on a small enough scale where i dont think you should even see an impact.

Thanks for the responce. I will look in to Admire. For now I will get rid of infecticed plants and replant. If the virus in not soil born that should work. gettin rid of the infecticed quickly should help to control it some.

 

[AmaxB]

the PHYB lines (there are 2) are actually NOT a true tobacco. they are the result of the fusion of the cytoplasm of tobacco with petunia, or a nuclear transfer into petunia. i cant remember which at the moment. the spots look like simple "bruising" that usually comes from some form of mechanical damage, or sometimes scald like Knucklehead was saying.

Thank You for the reply ction
I am growing both the PHYB-1 & PHYB-2 the 3 starts with a few leaves like that of the picture I posted are of the PHYB-2 line. The only one to display this of the 14 types I am growing thought it might have something to do with the soil mix.

 

[NRustica]

must be primitive type. It's acting like repanda or some other wild mexican type.

 

[Jitterbugdude]

you may want to look into an immune system boosting product called Admire, also known as imidacloprid. it boosts the immune system of the plant which helps it better ward off an infection

Do you have any peer reviewed references for this? As far as I know Imidacloprid is a systemic poison. It works by disrupting an insect's nervous system. It is also very highly implicated in the decline of honeybees.

 

[JessicaNicot]

Thanks for the responce. I will look in to Admire. For now I will get rid of infecticed plants and replant. If the virus in not soil born that should work. gettin rid of the infecticed quickly should help to control it some.

yeah, i forgot to mention to go ahead and get rid of any infected plant you see. i had a bunch of them in my field last year but the tobacco forman treated them with admire this year and i've only seen 3 infections in 1250 plants so far and im actually skeptical that those infections i saw might not have been TSWV but something else.

 

[JessicaNicot]

Do you have any peer reviewed references for this? As far as I know Imidacloprid is a systemic poison. It works by disrupting an insect's nervous system. It is also very highly implicated in the decline of honeybees.

turns out you're right. i think i was thinking of Actigard and got confused with the A's. im still learning about production practices so bare with me. Admire is a pesticide that is taken up by the tobacco plants and it kills the thrips when they try to feed. Actigard is the plant immune system activator. this is a link to our TSWV factsheet here at NCSU: http://www.cals.ncsu.edu/plantpath/extension/fact_sheets/Tobacco_-_Tomato_Spotted_Wilt_Virus.htm

 

[Knucklehead]

turns out you're right. i think i was thinking of Actigard and got confused with the A's. im still learning about production practices so bare with me. Admire is a pesticide that is taken up by the tobacco plants and it kills the thrips when they try to feed. Actigard is the plant immune system activator. this is a link to our TSWV factsheet here at NCSU: http://www.cals.ncsu.edu/plantpath/extension/fact_sheets/Tobacco_-_Tomato_Spotted_Wilt_Virus.htm

Great reading, thank you for the post. This one is a keeper. The glossary is very handy.

 

[Jitterbugdude]

. i think i was thinking of Actigard

Thanks!

Another method to control thrips is with beneficial insects and/or nematodes.... http://www.naturescontrol.com/thrip.html

 

[JessicaNicot]

so i've seen a lot of interesting phenotypes in the germplasm grow outs over the last 5 years, but this is definitely up there on the list of odd. i dont have my list with me right now to figure out what this variety is. i'll try to post an edit tomorrow with the name.

View attachment 5523

The unknown plant looks a lot like One Sucker to me.

so Sky wins. the mystery plant is exactly One Sucker. this is my first time growing it.

 

[Jitterbugdude]

I'm glad I didn't put my 2 cents in. The only plant I thought it might be was Little Dutch but I didn't say anything because it didn't quite look like L. Dutch

 

[skychaser]

so Sky wins. the mystery plant is exactly One Sucker. this is my first time growing it.

Skychaser takes a bow

 

[skychaser]

One Sucker is a dark air cured heirloom tobacco. It grows 4-5 feet in height. Its has dark green, sharply pointed leaves that can reach 3 feet in length. It produces 15-16 leaves on average and matures in 55-60 days. Mature plants have frost resistance and its low growth gives it excellent wind resistance. PI 146959

http://nwtseeds.com/Img_1331_copy.jpg
http://nwtseeds.com/Img_1515_copy.jpg

( you may need to paste the links into your browser for them to work )

 

[AmaxB]

Beautiful skychaser you keep a really nice garden looks like you may offer tours