Got it...
Last edited:
Question
- Thread starter Sam_Skunkman
- Start date
I bet it's in the DUDs thread, let me go look. It must be from before 10 pages of your posts saved on icmag because I just looked through my document searching for lab and it didn't come up.
You contact some of these guys? http://www.cdfa.ca.gov/Field_District_Offices.html
You contact some of these guys? http://www.cdfa.ca.gov/Field_District_Offices.html
I found this it is your oldest post still on your recent activity... I dont know if this is the lab you were reffering to or not... Ill keep looking, they are a nor cal lab specializing in wine pests & pathogens.
https://www.icmag.com/ic/showpost.php?p=6457771&postcount=945
https://www.icmag.com/ic/showpost.php?p=6457771&postcount=945
Not in the DUDs unless it's one of these:
If possible, try to get pictures of eggs if you believe they reproduce in cannabis, as none of the literature supports this. You can do it with your scope. A single female lays between 200-500 eggs, so ought to be easy to find with the scope.
Alfalfa Stem Nematode (ASN) may not reproduce in Cannabis but what about the other 20 races of Ditylenchus Dipsaci besides ASN?
That is what I was saying do likely reproduce in Cannabis. The eggs are small and do not wiggle so hard to see. A lab will answer this for us. Please someone send a sample with nematodes in to be ID and to tell if they Ditylenchus Dipsaci reproduce in Cannabis or not. I will bet they can, not ASN but one or more of the other 20 races of Ditylenchus Dipsaci.
If the lab can't tell the race of Ditylenchus Dipsaci have them send it to a nematode expert for the ID, they can send just the nematode that is legal every where and even federally funded labs can take them and ID them for the A L & L folks if they send them in.
-SamS
I do not see it.
I have varieties that have overlapping blades, they do not have BM. I know Cannabis pests better then anyone I have ever met, I fought them for decades using IPM, and am very sucessful. I did write a book about Cannabis and pests.
If this plant has a virus or other pathogen spread by broad mites, I don't see it. I do not see any BM damage, but I would need to use a scope and check out the leaves undersides. Yes, viruses and other pathogens can be spread by seed, but remember many Cannabis viruses are symtom free in Cannabis. If it is a disease then maybe farmers in Colorado can go to the Colorado State Department of Agriculture Biochemistry Laboratory and ask for help, they can ID BM and/or maybe find if the plant has a virus, from here I am just guessing.
Maybe in Calif you can use state Agri labs like the State Plant Health & Pest Prevention Service that will help with Cannabis grown by legal medical users? I do not know, but it can't be hard to check, give them a call.
I use the state agri labs here in the Netherlands, they have helped quite a bit in the past. I also worked closely with Kopert here, they tested several new controls with Cannabis in my greenhouse before introducing the controls to everyone.
Good luck, and do not presume you know the problem or the solutions, find the problem then find solutions, if there are any.
-SamS
OTHER POTENTIAL CAUSES OF DUDS BESIDES BROAD MITES, CYCLEMEN MITES, RUSSET MITES:
Quote:
Originally Posted by xxxstr8edgexxx View Post
virus can be cleared in a lab setting
Which viruses, which lab? How do they confirm the plant had a virus and confirm it is now gone? I know it can be done in theory.
Cannabis can get a lot of viruses....
Most info from the book "Hemp Diseases and Pests"
VIRUSES:
TRSV, Tobacco Ringspot Virus ELISA, nematode spreads and a little by insects
TSV, Tobacco Streak Virus Thrips
TomRSV, Tomato RingSpot Virus PCR, Yellow Vein — Tomato ringspot virus — ToRSV causes yellow vein disease. A similar disease is caused by tobacco ringspot virus. These viruses are transmitted by several species of nematodes including X. americanum, X. californicum,
and X. rivesi.
CMV, Cucumber Mosaic Virus ELISA, PCR, aphids, nematodes? seeds can transmit
ERSV, Eunoymous Ring Spot Virus
AMV, Alfalfa Mosaic Virus ELISA, aphids, seeds can transmit, Envirologix kit maybe? http://www.envirologix.com/artman/pu...lantpath.shtml
http://www.envirologix.com/artman/pu...icle_370.shtml
EMV, Elm Mosaic Virus
TMV, Tobacco Mosaic Virus PCR,
FMV, Foxtail Mosaic Virus
BBWV, Broad Bean Wilt fabaVirus ELISA,
ArMV, Arabis Mosaic Virus ELISA, PCR, Several nematode species can transmit
ArMV the most common being Xiphinema diversicaudatum. seeds can transmit
HSV, Hemp Streak Virus, seeds can transmit
RRV, Rasberry RingSpot nepoVirus “nepovirus” “ne” for nematode, “po” for polyhedral.
PVX, Potato Virus X ELISA,
PVY, Potato Virus Y ELISA,
HMV, Hemp Mosaic Virus, seeds can transmit
Spread by plant sap, pollen, seeds, insects even bees, nematodes, soil borne zoosporic protozoatools, tools, people...
HSV, AMV, CMV, ArMV, HMV are all spread by seeds.
BACTERIA:
Most info from Hemp Diseases and Pests pg 144-147
Bacterial Blight, aka, Bacterial Leaf Spot
Pseudomonas syringae pv. cannabina
Striatura Ulcerosa
Pseudomonas syringae pv. mori
Xanthomonas Blight
Xanthomonas campestris pv. cannabis
Wildfire Leaf Spot
Pseudomonas syringae pv. tabaci
Wisconsin Leaf Spot
Pseudomonas syringae pv. mellea
Crown Gall
Agrobacterium tumefaciens
Bacterial Wilt
Erwinia tracheiphila
Phytoplasmas
Pseudomonas
A tumefaciens
-----------------------------------------------------------------------------
Molecular characterization of Aster yellows (16SrI) group
phytoplasma infecting Cannabis sativa in eastern Uttar Pradesh
http://www.google.com/url?sa=t&rct=j...66917471,d.b2k
New Disease Reports (2008) 17, 16.
'Candidatus Phytoplasma asteris' (group 16SrI) associated with a witches'-broom disease of Cannabis sativa in India
S.K. Raj*, S. K. Snehi, M.S. Khan and S. Kumar
Plant Virology, National Botanical Research Institute, Lucknow-2260 01, U.P., India
http://www.ndrs.org.uk/article.php?id=017016
Indian Journal of Scientific Research
Year : 2011, Volume : 2, Issue : 4
First page : ( 121) Last page : ( 124)
Witche's Broom and Phyllody Like Symptoms of Diseases in Acalypha indica L. and Cannabis sativa L.- A New Report from Champaran, North Bihar
Singh R.B.a,1, Gupta P.K.b
Cytogenetics Lab., P.G. Deptt. of Botany, M.S. College, Motihari, Bihar
Research Plantica, Near S.N.S. College, Motihari, Bihar,
http://iijfmt.indianjournals.com/ijo...=4&article=024
If you only focus on viruses or insects, you miss bacterial disease, nematodes....
-SamS
Also found similar problems in China and Iran.
Title: First report of witches’-broom disease in a Cannabis species and its association with a phytoplasma of elm yellows group (16SrV)
Authors
Zhao, Yan
Sun, Qingrong - TAIAN PEOPLES REP CHINA
Davis, Robert
Lee, Ing Ming
Liu, Qingzhong - TAIAN PEOPLES REP CHINA
Submitted to: Plant Disease
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: October 15, 2006
Publication Date: February 1, 2007
Citation: Zhao, Y., Sun, Q., Davis, R.E., Lee, I., Liu, Q. 2007. First report of witches’-broom disease in a Cannabis species and its association with a phytoplasma of elm yellows group (16SrV). Plant Disease. 91:227.
http://apsjournals.apsnet.org/doi/ab...DIS-91-2-0227C
Characterization of Stolbur (16SrXII) Group Phytoplasmas Associated with Cannabis sativa Witches'-broom Disease in Iran
AUTHOR(S)Sichani, Fereshteh Vali; Bahar, Masoud; Zirak, Leila
PUB. DATEDecember 2011
Plant Pathology Journal;Dec2011, Vol. 10 Issue 4, p161
http://docsdrive.com/pdfs/ansinet/ppj/2011/161-167.pdf
http://www.oalib.com/paper/2284171
NEMATODES
You still need to ID the nematodes you found. As well as any other pathogens or pests you may have, take it to the lab OK?
There are some 500 species of nematodes that are plant parasites, but only a few effect Cannabis, Not all nematodes are bad news some are beneficial and prey on pests.
Root Knot Nematodes
Meloidogyne species include
Meloidogyne incognita, Southern Root Knot Nematode
Meloidogyne hapla, Northern Root Knot Nematode
Meloidogyne javanica, Java Root Knot Nematode
Cyst Nematodes
Heterodera schachtii, Sugar Beet Cyst Nematode
Heterodera humuli, Hops Cyst Nematode
Stem Nematode (this is the Alfalfa Stem Nematode) also called the Long Stem Nematode
Ditylenchus dipsaci
Root Lesion Nematode
Pratylenchus penetrans
Needle Nematode
Paralongidorus maximus
Spiral Nematodes
Heliocotylenchus & Scutellonema species
Reniform Nematodes
Rotylenchuls species
Cannabis was used in rotation with sugar beet crops in the Netherlands, to suppress the nematodes that caused problems for the sugar beets, worked great. There are bacterial and fungal bio-controls like bacterium Burkholderia (Pseudomonas) cepacia, against lesion, sting, lance, sprial nematodes.
Fungus, Myrothecium Verrucaria, for Meloidogyne, Heterodera, Pratylenchus, Xiphinema species.
Arthrobotrys robusta & Dactylaria superba species, for Ditylenchus & Meloidogyne species.
Bacterium, Pasturia (Bacillus) penetrans, for Meloidogyne, Heterodera, Ditylenchus, Paralongidorus, Pratylenchus species.
Fungus, Verticillium chlamydosporium kill many nematode species.
Fungus, Hirsutella rhossiliensis for Heterodera, Meloidogyne, Ditylenchus, Pratylenchus, Xiphinema species as well as killing beneficial nematode species Steinernema and Heterorhabditis.
Nematophthora gynophila, is an obligate parasite of nematodes in the Genus Heterodera.
Beneficial Nematodes
Heterorhabditis bacteriophora
Heterorhabditis indica
Heterorhabditis marelatus
Steinernema carpocapse
Steinernema kraussei
Steinernema feltiae is used against Root Knot Nematodes
Nematodes usually are introduced into new areas with infested soil or plants. (seeds can harbor nematodes on the outside) Prevent nematodes from entering your garden by using only nematode-free plants purchased from reliable suppliers. To prevent the spread of nematodes, avoid moving plants and soil from infested parts of the garden. Don’t allow irrigation water from around infested plants to run off, as this also spreads nematodes. Nematodes can be present in soil attached to tools and equipment used elsewhere, so clean tools thoroughly before using them in your garden.
-SamS
Stem Nematode:
http://utahpests.usu.edu/IPM/htm/fie...-stem-nematode
Nasty little beast!
Photos below at bottom of post:
The first photo (Fig. 4) Note the needle-like stylets in the heads of these alfalfa stem nematodes.
Next photo (Fig. 5) Dried, but still living nematodes on the surface of leaf debris in a sample of “brown bag” alfalfa seed.
Next photo (Fig. 6) Hair-like, dried nematodes (still living) on the surface of this alfalfa seed from a “brown bag” source of seed.
Next drawing is damage in Cannabis from stem nematodes.
Last is a drawing of a Nematode.
The truth is seeds can give you nematodes, but I have never seen these on Cannabis seeds. (maybe I need to look closer?)
-SamS
http://www.cabi.org/isc/datasheet/19287
All about how to ID, control, and find and remove from on seeds. Great Data!
They list Cannabis as a host plant along with a whole lot more plants.
Ditylenchus dipsaci
Stem Nematode (this is the Alfalfa Stem Nematode) also called the Long Stem Nematode
Natural enemies..................Type
Dactylella lysipaga................Predad or
Drechmeria coniospora.........Pathogen
Hirsutella rhossiliensis..........Pathoge n
Rhizoglyphus echinopus.........Predator
Witches Broom damage found in India, and stem nematode photos & drawings:
I think so also, if you only focus on viruses or mites, nematodes, or insects, you miss bacterial disease....
-SamS
Also found similar problems in China and India and Iran.
CHINA:
Title: First report of witches’-broom disease in a Cannabis species and its association with a phytoplasma of elm yellows group (16SrV)
Authors
Zhao, Yan
Sun, Qingrong - TAIAN PEOPLES REP CHINA
Davis, Robert
Lee, Ing Ming
Liu, Qingzhong - TAIAN PEOPLES REP CHINA
Submitted to: Plant Disease
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: October 15, 2006
Publication Date: February 1, 2007
Citation: Zhao, Y., Sun, Q., Davis, R.E., Lee, I., Liu, Q. 2007. First report of witches’-broom disease in a Cannabis species and its association with a phytoplasma of elm yellows group (16SrV). Plant Disease. 91:227.
http://www.ncaur.usda.gov/research/p..._no_115=199976
INDIA:
‘Candidatus Phytoplasma asteris’ (group 16SrI) associated with a witches’-broom disease of Cannabis sativa in India
S. K. Raj*, S. K. Snehi, M. S. Khan andS. Kumar
http://onlinelibrary.wiley.com/doi/1...8.01920.x/full
Witch's Broom and Phyllody Like Symptoms of Diseases in Acalypha indica L. and Cannabis sativa L.- A New Report from Champaran, North Bihar
Singh R.B.a,1, Gupta P.K.b
http://iijfmt.indianjournals.com/ijo...=4&article=024
Indian Phytopath. 64 (1) : 75-77 (2011)
Molecular characterization of Aster yellows (16SrI) group
phytoplasma infecting Cannabis sativa in eastern Uttar Pradesh
SMRITI MALL1, G.P. RAO*2 and P.P. UPADHYAYA1
RESEARCH ARTICLE
http://www.google.com/url?sa=t&rct=j...66917471,d.b2k
IRAN:
Characterization of Stolbur (16SrXII) Group Phytoplasmas Associated with Cannabis sativa Witches'-broom Disease in Iran
AUTHOR(S)Sichani, Fereshteh Vali; Bahar, Masoud; Zirak, Leila
PUB. DATEDecember 2011
Plant Pathology Journal;Dec2011, Vol. 10 Issue 4, p161
http://docsdrive.com/pdfs/ansinet/ppj/2011/161-167.pdf
http://www.oalib.com/paper/2284171
Call and ask them. If the state Agriculture Dept. will help with Cannabis or not. I do not know if the headquarters in Sacramento or one of the local offices in a more Cannabis friendly county are better to call, call Davis and/or call several more if you need to...
Have a phone number to give them, and a name or business name. Maybe an email? Tell us if you get lucky....
http://www.cdfa.ca.gov/Field_District_Offices.html
Or
Address
Oregon Department of Agriculture
Plant Program Area
635 Capitol St. NE
Salem, OR 97301-2532 USA
Hours of Operation 8:00 AM - 5:00 PM
Contact
plant-info@oda.state.or.us
Phone: 503-986-4644
Fax: 503-986-4786
Or
Oregon Agricultural Experiment Station
138 Strand Agriculture Hall, Oregon State University,
Corvallis, OR 97331- 8521
541-737-4251
It might be easier in Colorado and Washington, as well as each different state agris may only help state residents, maybe.
-SamS
I have never had BM, CM, or RM, I have grown a lot of plants in a dozen countries. I have had various viruses, bacterial and fungal disease pathogens most vectored by insect or other pests like nematodes etc even some by the wind I bet.
If you suspect pests or pathogens and if you are in Calif these people are in Davis near the bay area.
You might contact:
http://www.allcropsolutions.com/
And see if they can help, they are Cannabis friendly and say they have a lot of experience with Cannabis pathogens, they told me that.
If anyone uses them please post about anything was good or bad.
-SamS
If possible, try to get pictures of eggs if you believe they reproduce in cannabis, as none of the literature supports this. You can do it with your scope. A single female lays between 200-500 eggs, so ought to be easy to find with the scope.
Alfalfa Stem Nematode (ASN) may not reproduce in Cannabis but what about the other 20 races of Ditylenchus Dipsaci besides ASN?
That is what I was saying do likely reproduce in Cannabis. The eggs are small and do not wiggle so hard to see. A lab will answer this for us. Please someone send a sample with nematodes in to be ID and to tell if they Ditylenchus Dipsaci reproduce in Cannabis or not. I will bet they can, not ASN but one or more of the other 20 races of Ditylenchus Dipsaci.
If the lab can't tell the race of Ditylenchus Dipsaci have them send it to a nematode expert for the ID, they can send just the nematode that is legal every where and even federally funded labs can take them and ID them for the A L & L folks if they send them in.
-SamS
I do not see it.
I have varieties that have overlapping blades, they do not have BM. I know Cannabis pests better then anyone I have ever met, I fought them for decades using IPM, and am very sucessful. I did write a book about Cannabis and pests.
If this plant has a virus or other pathogen spread by broad mites, I don't see it. I do not see any BM damage, but I would need to use a scope and check out the leaves undersides. Yes, viruses and other pathogens can be spread by seed, but remember many Cannabis viruses are symtom free in Cannabis. If it is a disease then maybe farmers in Colorado can go to the Colorado State Department of Agriculture Biochemistry Laboratory and ask for help, they can ID BM and/or maybe find if the plant has a virus, from here I am just guessing.
Maybe in Calif you can use state Agri labs like the State Plant Health & Pest Prevention Service that will help with Cannabis grown by legal medical users? I do not know, but it can't be hard to check, give them a call.
I use the state agri labs here in the Netherlands, they have helped quite a bit in the past. I also worked closely with Kopert here, they tested several new controls with Cannabis in my greenhouse before introducing the controls to everyone.
Good luck, and do not presume you know the problem or the solutions, find the problem then find solutions, if there are any.
-SamS
OTHER POTENTIAL CAUSES OF DUDS BESIDES BROAD MITES, CYCLEMEN MITES, RUSSET MITES:
Quote:
Originally Posted by xxxstr8edgexxx View Post
virus can be cleared in a lab setting
Which viruses, which lab? How do they confirm the plant had a virus and confirm it is now gone? I know it can be done in theory.
Cannabis can get a lot of viruses....
Most info from the book "Hemp Diseases and Pests"
VIRUSES:
TRSV, Tobacco Ringspot Virus ELISA, nematode spreads and a little by insects
TSV, Tobacco Streak Virus Thrips
TomRSV, Tomato RingSpot Virus PCR, Yellow Vein — Tomato ringspot virus — ToRSV causes yellow vein disease. A similar disease is caused by tobacco ringspot virus. These viruses are transmitted by several species of nematodes including X. americanum, X. californicum,
and X. rivesi.
CMV, Cucumber Mosaic Virus ELISA, PCR, aphids, nematodes? seeds can transmit
ERSV, Eunoymous Ring Spot Virus
AMV, Alfalfa Mosaic Virus ELISA, aphids, seeds can transmit, Envirologix kit maybe? http://www.envirologix.com/artman/pu...lantpath.shtml
http://www.envirologix.com/artman/pu...icle_370.shtml
EMV, Elm Mosaic Virus
TMV, Tobacco Mosaic Virus PCR,
FMV, Foxtail Mosaic Virus
BBWV, Broad Bean Wilt fabaVirus ELISA,
ArMV, Arabis Mosaic Virus ELISA, PCR, Several nematode species can transmit
ArMV the most common being Xiphinema diversicaudatum. seeds can transmit
HSV, Hemp Streak Virus, seeds can transmit
RRV, Rasberry RingSpot nepoVirus “nepovirus” “ne” for nematode, “po” for polyhedral.
PVX, Potato Virus X ELISA,
PVY, Potato Virus Y ELISA,
HMV, Hemp Mosaic Virus, seeds can transmit
Spread by plant sap, pollen, seeds, insects even bees, nematodes, soil borne zoosporic protozoatools, tools, people...
HSV, AMV, CMV, ArMV, HMV are all spread by seeds.
BACTERIA:
Most info from Hemp Diseases and Pests pg 144-147
Bacterial Blight, aka, Bacterial Leaf Spot
Pseudomonas syringae pv. cannabina
Striatura Ulcerosa
Pseudomonas syringae pv. mori
Xanthomonas Blight
Xanthomonas campestris pv. cannabis
Wildfire Leaf Spot
Pseudomonas syringae pv. tabaci
Wisconsin Leaf Spot
Pseudomonas syringae pv. mellea
Crown Gall
Agrobacterium tumefaciens
Bacterial Wilt
Erwinia tracheiphila
Phytoplasmas
Pseudomonas
A tumefaciens
-----------------------------------------------------------------------------
Molecular characterization of Aster yellows (16SrI) group
phytoplasma infecting Cannabis sativa in eastern Uttar Pradesh
http://www.google.com/url?sa=t&rct=j...66917471,d.b2k
New Disease Reports (2008) 17, 16.
'Candidatus Phytoplasma asteris' (group 16SrI) associated with a witches'-broom disease of Cannabis sativa in India
S.K. Raj*, S. K. Snehi, M.S. Khan and S. Kumar
Plant Virology, National Botanical Research Institute, Lucknow-2260 01, U.P., India
http://www.ndrs.org.uk/article.php?id=017016
Indian Journal of Scientific Research
Year : 2011, Volume : 2, Issue : 4
First page : ( 121) Last page : ( 124)
Witche's Broom and Phyllody Like Symptoms of Diseases in Acalypha indica L. and Cannabis sativa L.- A New Report from Champaran, North Bihar
Singh R.B.a,1, Gupta P.K.b
Cytogenetics Lab., P.G. Deptt. of Botany, M.S. College, Motihari, Bihar
Research Plantica, Near S.N.S. College, Motihari, Bihar,
http://iijfmt.indianjournals.com/ijo...=4&article=024
If you only focus on viruses or insects, you miss bacterial disease, nematodes....
-SamS
Also found similar problems in China and Iran.
Title: First report of witches’-broom disease in a Cannabis species and its association with a phytoplasma of elm yellows group (16SrV)
Authors
Zhao, Yan
Sun, Qingrong - TAIAN PEOPLES REP CHINA
Davis, Robert
Lee, Ing Ming
Liu, Qingzhong - TAIAN PEOPLES REP CHINA
Submitted to: Plant Disease
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: October 15, 2006
Publication Date: February 1, 2007
Citation: Zhao, Y., Sun, Q., Davis, R.E., Lee, I., Liu, Q. 2007. First report of witches’-broom disease in a Cannabis species and its association with a phytoplasma of elm yellows group (16SrV). Plant Disease. 91:227.
http://apsjournals.apsnet.org/doi/ab...DIS-91-2-0227C
Characterization of Stolbur (16SrXII) Group Phytoplasmas Associated with Cannabis sativa Witches'-broom Disease in Iran
AUTHOR(S)Sichani, Fereshteh Vali; Bahar, Masoud; Zirak, Leila
PUB. DATEDecember 2011
Plant Pathology Journal;Dec2011, Vol. 10 Issue 4, p161
http://docsdrive.com/pdfs/ansinet/ppj/2011/161-167.pdf
http://www.oalib.com/paper/2284171
NEMATODES
You still need to ID the nematodes you found. As well as any other pathogens or pests you may have, take it to the lab OK?
There are some 500 species of nematodes that are plant parasites, but only a few effect Cannabis, Not all nematodes are bad news some are beneficial and prey on pests.
Root Knot Nematodes
Meloidogyne species include
Meloidogyne incognita, Southern Root Knot Nematode
Meloidogyne hapla, Northern Root Knot Nematode
Meloidogyne javanica, Java Root Knot Nematode
Cyst Nematodes
Heterodera schachtii, Sugar Beet Cyst Nematode
Heterodera humuli, Hops Cyst Nematode
Stem Nematode (this is the Alfalfa Stem Nematode) also called the Long Stem Nematode
Ditylenchus dipsaci
Root Lesion Nematode
Pratylenchus penetrans
Needle Nematode
Paralongidorus maximus
Spiral Nematodes
Heliocotylenchus & Scutellonema species
Reniform Nematodes
Rotylenchuls species
Cannabis was used in rotation with sugar beet crops in the Netherlands, to suppress the nematodes that caused problems for the sugar beets, worked great. There are bacterial and fungal bio-controls like bacterium Burkholderia (Pseudomonas) cepacia, against lesion, sting, lance, sprial nematodes.
Fungus, Myrothecium Verrucaria, for Meloidogyne, Heterodera, Pratylenchus, Xiphinema species.
Arthrobotrys robusta & Dactylaria superba species, for Ditylenchus & Meloidogyne species.
Bacterium, Pasturia (Bacillus) penetrans, for Meloidogyne, Heterodera, Ditylenchus, Paralongidorus, Pratylenchus species.
Fungus, Verticillium chlamydosporium kill many nematode species.
Fungus, Hirsutella rhossiliensis for Heterodera, Meloidogyne, Ditylenchus, Pratylenchus, Xiphinema species as well as killing beneficial nematode species Steinernema and Heterorhabditis.
Nematophthora gynophila, is an obligate parasite of nematodes in the Genus Heterodera.
Beneficial Nematodes
Heterorhabditis bacteriophora
Heterorhabditis indica
Heterorhabditis marelatus
Steinernema carpocapse
Steinernema kraussei
Steinernema feltiae is used against Root Knot Nematodes
Nematodes usually are introduced into new areas with infested soil or plants. (seeds can harbor nematodes on the outside) Prevent nematodes from entering your garden by using only nematode-free plants purchased from reliable suppliers. To prevent the spread of nematodes, avoid moving plants and soil from infested parts of the garden. Don’t allow irrigation water from around infested plants to run off, as this also spreads nematodes. Nematodes can be present in soil attached to tools and equipment used elsewhere, so clean tools thoroughly before using them in your garden.
-SamS
Stem Nematode:
http://utahpests.usu.edu/IPM/htm/fie...-stem-nematode
Nasty little beast!
Photos below at bottom of post:
The first photo (Fig. 4) Note the needle-like stylets in the heads of these alfalfa stem nematodes.
Next photo (Fig. 5) Dried, but still living nematodes on the surface of leaf debris in a sample of “brown bag” alfalfa seed.
Next photo (Fig. 6) Hair-like, dried nematodes (still living) on the surface of this alfalfa seed from a “brown bag” source of seed.
Next drawing is damage in Cannabis from stem nematodes.
Last is a drawing of a Nematode.
The truth is seeds can give you nematodes, but I have never seen these on Cannabis seeds. (maybe I need to look closer?)
-SamS
http://www.cabi.org/isc/datasheet/19287
All about how to ID, control, and find and remove from on seeds. Great Data!
They list Cannabis as a host plant along with a whole lot more plants.
Ditylenchus dipsaci
Stem Nematode (this is the Alfalfa Stem Nematode) also called the Long Stem Nematode
Natural enemies..................Type
Dactylella lysipaga................Predad or
Drechmeria coniospora.........Pathogen
Hirsutella rhossiliensis..........Pathoge n
Rhizoglyphus echinopus.........Predator
Witches Broom damage found in India, and stem nematode photos & drawings:
I think so also, if you only focus on viruses or mites, nematodes, or insects, you miss bacterial disease....
-SamS
Also found similar problems in China and India and Iran.
CHINA:
Title: First report of witches’-broom disease in a Cannabis species and its association with a phytoplasma of elm yellows group (16SrV)
Authors
Zhao, Yan
Sun, Qingrong - TAIAN PEOPLES REP CHINA
Davis, Robert
Lee, Ing Ming
Liu, Qingzhong - TAIAN PEOPLES REP CHINA
Submitted to: Plant Disease
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: October 15, 2006
Publication Date: February 1, 2007
Citation: Zhao, Y., Sun, Q., Davis, R.E., Lee, I., Liu, Q. 2007. First report of witches’-broom disease in a Cannabis species and its association with a phytoplasma of elm yellows group (16SrV). Plant Disease. 91:227.
http://www.ncaur.usda.gov/research/p..._no_115=199976
INDIA:
‘Candidatus Phytoplasma asteris’ (group 16SrI) associated with a witches’-broom disease of Cannabis sativa in India
S. K. Raj*, S. K. Snehi, M. S. Khan andS. Kumar
http://onlinelibrary.wiley.com/doi/1...8.01920.x/full
Witch's Broom and Phyllody Like Symptoms of Diseases in Acalypha indica L. and Cannabis sativa L.- A New Report from Champaran, North Bihar
Singh R.B.a,1, Gupta P.K.b
http://iijfmt.indianjournals.com/ijo...=4&article=024
Indian Phytopath. 64 (1) : 75-77 (2011)
Molecular characterization of Aster yellows (16SrI) group
phytoplasma infecting Cannabis sativa in eastern Uttar Pradesh
SMRITI MALL1, G.P. RAO*2 and P.P. UPADHYAYA1
RESEARCH ARTICLE
http://www.google.com/url?sa=t&rct=j...66917471,d.b2k
IRAN:
Characterization of Stolbur (16SrXII) Group Phytoplasmas Associated with Cannabis sativa Witches'-broom Disease in Iran
AUTHOR(S)Sichani, Fereshteh Vali; Bahar, Masoud; Zirak, Leila
PUB. DATEDecember 2011
Plant Pathology Journal;Dec2011, Vol. 10 Issue 4, p161
http://docsdrive.com/pdfs/ansinet/ppj/2011/161-167.pdf
http://www.oalib.com/paper/2284171
Call and ask them. If the state Agriculture Dept. will help with Cannabis or not. I do not know if the headquarters in Sacramento or one of the local offices in a more Cannabis friendly county are better to call, call Davis and/or call several more if you need to...
Have a phone number to give them, and a name or business name. Maybe an email? Tell us if you get lucky....
http://www.cdfa.ca.gov/Field_District_Offices.html
Or
Address
Oregon Department of Agriculture
Plant Program Area
635 Capitol St. NE
Salem, OR 97301-2532 USA
Hours of Operation 8:00 AM - 5:00 PM
Contact
plant-info@oda.state.or.us
Phone: 503-986-4644
Fax: 503-986-4786
Or
Oregon Agricultural Experiment Station
138 Strand Agriculture Hall, Oregon State University,
Corvallis, OR 97331- 8521
541-737-4251
It might be easier in Colorado and Washington, as well as each different state agris may only help state residents, maybe.
-SamS
I have never had BM, CM, or RM, I have grown a lot of plants in a dozen countries. I have had various viruses, bacterial and fungal disease pathogens most vectored by insect or other pests like nematodes etc even some by the wind I bet.
If you suspect pests or pathogens and if you are in Calif these people are in Davis near the bay area.
You might contact:
http://www.allcropsolutions.com/
And see if they can help, they are Cannabis friendly and say they have a lot of experience with Cannabis pathogens, they told me that.
If anyone uses them please post about anything was good or bad.
-SamS
Only thing I found was this:
If it's not that it's probably what Infinitesimal posted above:
If it's not that it's probably what Infinitesimal posted above:
