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| Forums > Marijuana Growing > Cannabis Infirmary > Help identify " Black Death " in Hawaii | ||
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#21 |
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Member
Join Date: May 2013
Location: HI
Posts: 207
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Yeah, I havent seen the purpling on the Girl Kandy clone in over a month. I did have to cull a plant yesterday that seemed to have dudded.
First saw it about a year ago on a cookie and cream cut I passed to my friend in Puna and then got back later. After I got it back it always had the purple thing going on and the leaves would grow out all blistered and chewed up looking...the plant eventually died in 3 weeks of flower and the main stem did look all grey inside like it was something fungal. Havent seen it since until I got clones from the same guy Surfd mentioned and he even mentioned the purple new growth when I picked them up. I also picked up russets on these clones but I dont think they are responsible for the purple. I've been doing heavy foliar sprays for the russets and seem to have them beat. The foliar regime combined with getting the plants out in the sun seems to have taken them out. I did two spinosad treatments and one sulfur spray. That knocked em back, now I rotate between neem with aloe and yucca and natural mystic every other day. Using aloe in every watering and spray as well. I've read on another thread of people using pure water solubal chitosan powder and it cures plants that have dudded. Seems a little pricey but worth a try if you might lose something rare. |
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#22 |
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Senior Member
Join Date: Feb 2010
Posts: 1,034
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I get the same story all the time, still no one can positivly identify this . Im gonna
![]() I am doing a full coverage spray regime myself, to no avail everyone. I started with pyrethrum sprays and even used triazicide sprayed every 3 days for 3 weeks and I still got it. Im doing Nuke em sprayed twice a day , so far no luck with this either. It does not kill PM like the bottle says either. Not sure what it is doing other than costing me big $$$ Same with Actinovate.... I am spraying and doing soil drenches. I have even used it up to triple strength. I still have PM and I see new tips with Black Death... frustrating is a word that keeps coming up.. I spray Natural Mistik also. It doesnt do squat for PM, black leaf spot, botrytis or black death. I like it for other reasons. As to having bannanas, yes I do. Not sure if I have bunchy top or not, have not checked in awhile. I was thinking that this might be something related to the rapid ohia death fungus?. Seeing more and more dead and dying ohia. IDK??
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#23 |
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Member
Join Date: Jan 2014
Posts: 516
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Yep, hope we find out what it is. Actinovate is best for damping off. Matural Mistic is awesome but like you said is just a preventetive. Only Serenade will stop botrytis, PM is easy to control. This Black Lime Reserve cut had it when I got it in from Kona and now she and her cuts are ok.
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#24 |
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Member
Join Date: May 2013
Location: HI
Posts: 207
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Here is an interesting article that talks about purpling tops on phytoplasma infected plants. A lot of the symptoms you described are mentioned early in the article. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3925944/
Tribune herald also just did an article this week about a beetle they believe is contributing to the spread of Ohia wilt. The reason I asked about the bananas and bunchy top, is that aphids are responsible for transmission of bunchy top and phytoplasmas are transmitted the same way. I have not found actinovate to be the least bit useful, in my experience. |
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#25 |
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Newbie
Join Date: Jan 2015
Location: Da Woodz, G-ville, SoHum
Posts: 39
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This is a super interesting article. I hope you guys can figure it out. like people have mentioned i would try a judicious serving of tea or acct with some local "weeds". Actinovate is owned by monsanto. dont use that.
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#26 |
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Banned
Join Date: Apr 2011
Posts: 1,202
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I have seen this happen to individual plants only a cpl of times. Plants stop growing turn purplish black. This affected tip seems to perforate and fall off. I always just pitched the plant. It should b noted, I'm the northeast
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#27 |
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Member
Join Date: Jan 2014
Posts: 516
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Kalo, next time you get cuts damping off...use the Actinovate with Iron in the black bag...will stop it quickly. Other than that, worthless.
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#28 |
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Member
Join Date: Jan 2014
Posts: 516
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I think it is fungal, but cant figure out how it mutates the leaf so much.
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#29 |
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Senior Member
Join Date: Feb 2010
Posts: 1,034
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Ok I am back.
Aloha!! So far I am gonna go out on a limb and say it is NOT fungal primarily. I'm saying it's a microscopic bug. Some kind of mite to be exact. Here is my reasoning. First and foremost no spray made to assult fungal issues works on any level to make this issue go away. Second when I do mite prevention with Nuke em every day I see progress . If I stop spraying it returns. The black death moves from plant to plant without sharing space, water ect.. I have been doing examinations on root crowns of affected plants and have found no evidence of any fungal issues on affected plants at First. However I have found fungal issues later after the black death has overtaken a plant. So two problems sometimes three manifest. It starts and progresses like this. 1-Healthy plant 2-Small hooked leaf tips and plants slow vertical growth, plants start horizontal bushy type growth. Most people think " wow what a compact, bushy plant, gonna be a monsta " WRONG.... 3-Blistered mutated leaves appear, leaves grow small. Yellowing of lowest leaves kicks into overdrive. 4- The growing tips look slightly twisted and if you look closely, black/purple discoloration on the leaves. 5-You got da black death..
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#30 |
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Polished Member
Join Date: Feb 2004
Posts: 160
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I think K-patch is on the right path with phytoplasma/spiroplasma infections.
Thanks for the link. ![]() Potatoe purple top, aster yellows, sweet potatoe little leaf, witches broom all seem to be spread by a bug biting the plant and transferring the bacteria into vein system of the plant.Leafhoppers seem to be the largest culprit, aphids and psyllids also. Doesn't look like these infections are too curable after the fact. Class of bacteriums that are fairly immune to antibiotics. IF this is what's happening it reminds me of the dengue outbreak. Stop the initial bite, identify eliminate pest hot spots , keep infected out of the loop. Hope you get it licked. Congrats on the Puna D |
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