NAME THIS BUG and you can do what no other can

[inreplyavalon]

Oh and I forgot to pick up the magnification instrument when i was at the hydro shop today. Too much Ganja Food after lunch
I will remember tomorrow

 

[GoneRooty]

They seem to like the woody stemmed plants significantly more.

That makes me think lenticels even more, they are more prevalent on woodier plants. The interesting thing is that even apples have lenticels on the skin of the fruit. Lenticels aren't really a very well known thing, outside of the horticulture industry as far as I know. Not many backyard gardeners know much about them.

 

[inreplyavalon]

Yeah i saw a picture of them on an apple. It was real cool because i have seen them on apples before and never thought twice about them. Now i know.
I was just thinking that others on these boards would have already shared many experiences of these. They are definitely cause for alarm to the uninformed, yet observant, growers.
I am bummed i didnt pick up the magnifier and will make sure i dont forget tomorrow!!
Thanks again RoOtY for sticking around!

 

[VerdantGreen]

here's a pic (not a very good one) that i took of my Blueberry cut to show leaf senescence under my scrog screens - anyway the plant looks to have lenticels too. defiitely no pest problem on this plant...

VG

 

[exploziv]

exploziv_gbb I have heard this book referenced a few times now. Maybe its time to buy. What "topic" are you referring to that the book references?

I was referring about the possibility of your "problem" beeing lenticels, that GoneRooty presented. In the book, the author states clearly that cannabis does have lenticels, and explains how some parasites can enter through them. Don't know if this is your problem, as I don't have the whole book, just previewed it on google books. Maybe if you find it somewhere it would be useful for at least eliminating other possible problems, like pests and disease.

 

[HighDesertJoe]

Don't forget the 100+er today.

 

[supersmallgiant]

Oh and I forgot to pick up the magnification instrument when i was at the hydro shop today. Too much Ganja Food after lunch
I will remember tomorrow

I got mine for cheaper minus the horticulture packaging from radio shack. Might be worth it if you have one nearby.

 

[DrLongbottom]

Those are Lenticels. Definately not a parasite/bug. DLB

 

[grapeman]

I am growing in pure Coco. Drip to Waste. They are present in varying numbers on all strains. They seem to like the woody stemmed plants significantly more. Some plants seem to only have a few centered around branch nodes and others, like the strawberry Diesel pictured get thousands on the lower 3/4 of the plant.

So much for the amino acid/proteins exudes. What I opined is fairly common on new "green" growth (never older woody growth) on very vigorous vines/plants.

they do however wipe off easily with a finger.

So sorry, I have no more to offer. Interesting though.

 

[mad librettist]

NAME THIS BUG and you can do what no other can

I have them on a tomato plant. it's been wet.

when I pull the soil away from the stem, I find more, only these ones have roots sticking out.


I vote for high humidity (nanoclimate).

 

[mad librettist]

NAME THIS BUG and you can do what no other can

oh and I thought up a test.

mark some spots by circling with marker.

then wrap the area with moistened long fibre sphagnum (orchid dept at Lowe's). you'll need to wrap that with cloth. keep it moist for a week then take a look.

 

[dr.penthotal]

my diagnose

my diagnose

Hi my friends,
I've followed this post with interest.
I spent a wonderful hour today with my 60x magnifier because I found also these things on my plants!

This thread pointed me to a direction I never thought of, thank you!

This was my diagnose process and my thoughts:

It's a thing I never noticed as bad, I've seen those things in plants very frequently, expecially outdoors, but actually I never worried so much.
Seen this on best plants I had and on worst one also.
Had so many different bugs infestation to fight and seen already the destructive potential of a bug, I KNOW how hard is to win a fight and the whole war, and how easy is to prevent... Not this case...
My grow is clean and in good shape, pure organic soil bed, water form beginning to end, so never worried of those spots.

Are they like these?


It's a plant base stem and an upper part. Some roots tend to come out of these.
I noticed that they appear first at the base of stem as plant piles up lignine (wood) as her transport system grows up and need to sustain upper weight.
If you go upper in the stem they appear as lignification process goes upper in the stem. Their number decreases going upper.
No traces on new stems or growth or buds.
They don't move, even if touched.
No honeydew. they're not soluble.
They're on most of plants.
I magnified 60x and they look like a sessile formation, like a small pile of dirt, whitish and looks dry, "like a scab" is a good way to describe. It's very easily scratched off the stem with your nail. Once off there are no visible organs like mouth or anchoring systems or legs of some sort. All the material looks uniform in color and appearence. They never move, even scrached off (a scale would or she would have some organ to suck).
If you magnify the point where it was removed, it reveals a small greenish scar in the tissue.
(I've seen also the dry exudates of sap when the stem breaks, but they look different)
They don't seem harmful.

I'd go for lenticels.

Wiki definition is good: "Lenticels are found as raised circular, oval, or elongated areas on stems and roots. As stems and roots mature lenticel development continues in the newly forming periderm found at the bottom of cracks in the bark".

I guess plants use those as pores to mantain comunication for exchanging gases out of her wood which is forming during growth.
The reason they form and the enviroment that promotes such formations is still to be discussed.
It looks probable that they're a part of reaction to excessive humidity of air.
(I have a good mulch of pine barks and my air conditions are quite dry and vented 30-35%rh, but near the mulch might be higher...)
Not seen any serious article on it and needs more research, but it's definitely a good observation!
Didn't know they existence or use before.


I've been also through the "hemp and pest d." book and I found this interesting chart to diagnose a bug in the lower and upper part of the stem and it doesn't seem our case...

"III. Lower stalk, including crown (stalk at soil level)
A,. Stalks swollen into galls, puncture holes often present, frass or insect visible
B,. Insect a caterpillar with 6 true legs in addition to 8 prolegs
C,. Caterpillar pale brown with dark head ..........................................................European corn borer
C2.Caterpillar darker brown, white, green or red-violet ........................................Other stem borers
B2. Insect a pale white beetle grub with 6 true legs, no prolegs
C,. Grubs <7 mm long, plump, assume a C-shape when disturbed .............Weevil, curculio grubs
C2.G rubs >7 mm, cylindrical, with enlarged heads ......................................Longhorn beetle grubs
A2. No swollen stalks, puncture holes, or other signs and symptoms of insects
Bl. Epidermis shredded, sclerotia present on surface or in pith
C1. Mycelium white, sclerotia oblong, 5-12 mm in length .............................................Hemp canker
C2.Mycelium pale brown, sclerotia nearly spherical, 1 mm diam ..............................Southern blight
B2. No sclerotia
C,. Crown turns dark brown, epidermis shredded ..........................................Rhizoctonia sore shin
CZ. Crown dark brown, epidermis intact, root stele discoloured red ................... Fusarium foot rot
C3. Crown with beige-coloured, lumpy, cancer-like growths ...........................................Crown gall"
and
"IV. Upper stem and branches
Al. Stem galls, puncture holes, frass or insect visible
B1. Insect on surface of stem, feeding externally
C1. Insect sedentary or slow moving
Dl. Insect covered in froth of spittle ............................................................................Spittlebugs
D2. Insect flattened, often with waxy filaments
E,. Filaments disappear with age, insects brown, round ...........................................Scales
E,. Filaments persist, insects white, slowly mobile .............................................Mealybugs
C,. Insect quickly leaps away when spotted
Dl. Insect small, spindle-shaped, with fringed wings. ...............................................................Thrips
D,. Insect flattened shield shape, wings leather-like ......................................... Tarnished plant bugs
B,. Larvae feed within stem gall
C1. Insect a 3-legged pale-bodied beetle larva
Dl. Grubs <7 mm long, plump, assume C-shape when disturbed ........ Weevil, curculio grubs
D,. Grubs >7 mm, cylindrical, with enlarged heads ...............................Longhorn beetle grubs
D,. Grubs different than above ...........................................................Assorted boring beetles
C2. Larvae with prolegs (caterpillars) or no legs (maggots)
Dl. Small (<7 mm long) legless maggots .............................................................Nettle midges
D,. Larva a caterpillar
El. Pale brown bristly body with dark head, 10-20 mm long ......... European corn borers
E2. Plump pinkish-white body <10 mm long with dark head ....................... Hemp borers
E3. Caterpillar darker brown, white, green or red-violet ........................Other stem borers
A,. No galls, puncture holes, frass or insect visible
B1. Stem or branch epidermis sunken or discoloured
C1. Canker covered with a mat of mycelium and spores
Dl. Spores grey, round .................................................................................................G...r ey mould
D2.S pores white or light pink, ellipsoid ..........................................................................Pink rot
D,. Spores green, oblong .............................................................................Cladosporium canker
C2. Canker not covered with mycelium, usually light brown
Dl. Fruiting bodies present in older lesions
El. Initial fruiting body a simple pycnidium
F1. Fungus only produces pycnidia in culture ............................................Yellow spot
F2. Other spore stages sometimes form in culture ................ Brown spot, Twig blight
E2. Initial fruiting body an acervulus or perithecium
F1. Grey to pink acervuli bristling with setae ...........................................A nthracnose
F2. Perithecia with long cylindrical ascospores ..............................Ophiobolus canker
Dl. No fruiting bodies
El. Fungal spores canoe-shaped .......................................................Fusarium stem canker
E2. No fungal elements, bacteria seen under microscope ....................... Striatura ulcerosa"

Sorry for bad quality but It was ocrd and in a different format.
Thanks everyone for the good thread, very respectful suggestion from everyone, hope to be helpful,
the moral is for me
Don't worry!!:friends:
So much to have to learn, so little time...
regards
Dr.P

 

[inreplyavalon]

Hi my friends,
I've followed this post with interest.
I spent a wonderful hour today with my 60x magnifier because I found also these things on my plants!

This thread pointed me to a direction I never thought of, thank you!

This was my diagnose process and my thoughts:

It's a thing I never noticed as bad, I've seen those things in plants very frequently, expecially outdoors, but actually I never worried so much.
Seen this on best plants I had and on worst one also.
Had so many different bugs infestation to fight and seen already the destructive potential of a bug, I KNOW how hard is to win a fight and the whole war, and how easy is to prevent... Not this case...
My grow is clean and in good shape, pure organic soil bed, water form beginning to end, so never worried of those spots.

Are they like these?


It's a plant base stem and an upper part. Some roots tend to come out of these.
I noticed that they appear first at the base of stem as plant piles up lignine (wood) as her transport system grows up and need to sustain upper weight.
If you go upper in the stem they appear as lignification process goes upper in the stem. Their number decreases going upper.
No traces on new stems or growth or buds.
They don't move, even if touched.
No honeydew. they're not soluble.
They're on most of plants.
I magnified 60x and they look like a sessile formation, like a small pile of dirt, whitish and looks dry, "like a scab" is a good way to describe. It's very easily scratched off the stem with your nail. Once off there are no visible organs like mouth or anchoring systems or legs of some sort. All the material looks uniform in color and appearence. They never move, even scrached off (a scale would or she would have some organ to suck).
If you magnify the point where it was removed, it reveals a small greenish scar in the tissue.
(I've seen also the dry exudates of sap when the stem breaks, but they look different)
They don't seem harmful.

I'd go for lenticels.

Wiki definition is good: "Lenticels are found as raised circular, oval, or elongated areas on stems and roots. As stems and roots mature lenticel development continues in the newly forming periderm found at the bottom of cracks in the bark".

I guess plants use those as pores to mantain comunication for exchanging gases out of her wood which is forming during growth.
The reason they form and the enviroment that promotes such formations is still to be discussed.
It looks probable that they're a part of reaction to excessive humidity of air.
(I have a good mulch of pine barks and my air conditions are quite dry and vented 30-35%rh, but near the mulch might be higher...)
Not seen any serious article on it and needs more research, but it's definitely a good observation!
Didn't know they existence or use before.


I've been also through the "hemp and pest d." book and I found this interesting chart to diagnose a bug in the lower and upper part of the stem and it doesn't seem our case...

"III. Lower stalk, including crown (stalk at soil level)
A,. Stalks swollen into galls, puncture holes often present, frass or insect visible
B,. Insect a caterpillar with 6 true legs in addition to 8 prolegs
C,. Caterpillar pale brown with dark head ..........................................................European corn borer
C2.Caterpillar darker brown, white, green or red-violet ........................................Other stem borers
B2. Insect a pale white beetle grub with 6 true legs, no prolegs
C,. Grubs <7 mm long, plump, assume a C-shape when disturbed .............Weevil, curculio grubs
C2.G rubs >7 mm, cylindrical, with enlarged heads ......................................Longhorn beetle grubs
A2. No swollen stalks, puncture holes, or other signs and symptoms of insects
Bl. Epidermis shredded, sclerotia present on surface or in pith
C1. Mycelium white, sclerotia oblong, 5-12 mm in length .............................................Hemp canker
C2.Mycelium pale brown, sclerotia nearly spherical, 1 mm diam ..............................Southern blight
B2. No sclerotia
C,. Crown turns dark brown, epidermis shredded ..........................................Rhizoctonia sore shin
CZ. Crown dark brown, epidermis intact, root stele discoloured red ................... Fusarium foot rot
C3. Crown with beige-coloured, lumpy, cancer-like growths ...........................................Crown gall"
and
"IV. Upper stem and branches
Al. Stem galls, puncture holes, frass or insect visible
B1. Insect on surface of stem, feeding externally
C1. Insect sedentary or slow moving
Dl. Insect covered in froth of spittle ............................................................................Spittlebugs
D2. Insect flattened, often with waxy filaments
E,. Filaments disappear with age, insects brown, round ...........................................Scales
E,. Filaments persist, insects white, slowly mobile .............................................Mealybugs
C,. Insect quickly leaps away when spotted
Dl. Insect small, spindle-shaped, with fringed wings. ...............................................................Thrips
D,. Insect flattened shield shape, wings leather-like ......................................... Tarnished plant bugs
B,. Larvae feed within stem gall
C1. Insect a 3-legged pale-bodied beetle larva
Dl. Grubs <7 mm long, plump, assume C-shape when disturbed ........ Weevil, curculio grubs
D,. Grubs >7 mm, cylindrical, with enlarged heads ...............................Longhorn beetle grubs
D,. Grubs different than above ...........................................................Assorted boring beetles
C2. Larvae with prolegs (caterpillars) or no legs (maggots)
Dl. Small (<7 mm long) legless maggots .............................................................Nettle midges
D,. Larva a caterpillar
El. Pale brown bristly body with dark head, 10-20 mm long ......... European corn borers
E2. Plump pinkish-white body <10 mm long with dark head ....................... Hemp borers
E3. Caterpillar darker brown, white, green or red-violet ........................Other stem borers
A,. No galls, puncture holes, frass or insect visible
B1. Stem or branch epidermis sunken or discoloured
C1. Canker covered with a mat of mycelium and spores
Dl. Spores grey, round .................................................................................................G...r ey mould
D2.S pores white or light pink, ellipsoid ..........................................................................Pink rot
D,. Spores green, oblong .............................................................................Cladosporium canker
C2. Canker not covered with mycelium, usually light brown
Dl. Fruiting bodies present in older lesions
El. Initial fruiting body a simple pycnidium
F1. Fungus only produces pycnidia in culture ............................................Yellow spot
F2. Other spore stages sometimes form in culture ................ Brown spot, Twig blight
E2. Initial fruiting body an acervulus or perithecium
F1. Grey to pink acervuli bristling with setae ...........................................A nthracnose
F2. Perithecia with long cylindrical ascospores ..............................Ophiobolus canker
Dl. No fruiting bodies
El. Fungal spores canoe-shaped .......................................................Fusarium stem canker
E2. No fungal elements, bacteria seen under microscope ....................... Striatura ulcerosa"

Sorry for bad quality but It was ocrd and in a different format.
Thanks everyone for the good thread, very respectful suggestion from everyone, hope to be helpful,
the moral is for me
Don't worry!!:friends:
So much to have to learn, so little time...
regards
Dr.P

Yes Sir those look just like them. I picked up a 100x scope and although my findings are still inconclusive from what i could tell, Its nice to know your thoughts. I agree they are likely NOT scale as even when magnified after scraping off, all i could find was bits of debris. They look like Dried rubber cement glue, or like spit. Not sure they are not some kind of fungus. I would not describe them as dry looking, looked shiny and moist, but definitely flakes apart when crushed and feels dry.
I also noticed lots of microscopic droplets on the stalk, intermingled with the hairs.
I thought some of them when magnified 60-100x looked some like pictures of scale i have seen. The difference is the pictures are of scale visible with the naked eye, where as these are a lot smaller.

Lenticils seem plausible because under my canopy in veg usually exists some humid conditions. Very much so. Though i have not seen roots growing out of any of them.

MAd Libbertist I think i will try your experiment when i get my hands on some moss...Would anything laying around the house work in its place?

Thanks to all of you for participating in this thread. I am leaning towards NOT scale and that is a VERY happy place for me to be at thins point!

 

[mad librettist]

MAd Libbertist I think i will try your experiment when i get my hands on some moss...Would anything laying around the house work in its place?

it's gotta be moist, dark, and not too microbalicious. just look up air layering.

 

[inreplyavalon]

it's gotta be moist, dark, and not too microbalicious. just look up air layering.

I am going to seriously look into this. It would sure be conclusive if a root grew out the middle!

 

[MjBuddah]

I think they are a species of scale. not sure though?

 

[NorcalBob]

IF it were scale your fingers would be sticky after you scratched it, it's a blowhole!

 

[headband 707]

You could have a build up of salts pouring out of your stem OR you could have scale or the start of mealy you could see better with a magnifying glass if there is any bugs attached stay safe headband 707

 

[Dkgrower]

They look like some virus that attack tomato, do u smoke cigarets =)

 

[supermanlives]

looks like a fred to me LOL great thread .i have seen this before and always wondered what it was. didnt seem to hurt anything.