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oriky

bad roting cuzco help

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hey guys, today i just see this on my cuzco, is a plant i grow from seeds so i like it.

i think its happend becuase i give to much water, something like this happend with my of my loph (and now is only half loph)

i clean the rot area, and give it to dry couple days, there is small air root that you can see on some the picture, my quesition is if to put in on the ground lik it was before, same place, or give the rot area dry for couple days, and then put all the trich inside th soil till the air roots will be also on the soil?

i plan to support it with a stick, it will not stand alone again :(

it will be o.k or it better i will cut it now? :(

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I dont think you´ll be able to save the root area. Personally, I´d make a clean cut and treat the cutting with fungicides. Sulfur or maybe something comparable. It´s possible you might have to use a systemic pesticide if it doesnt go away. I´d definitely cut off the water and keep it at a dry and warm place. Also, get yourself a magnifying glass and check for bugs. There are some infections that go hand in hand with spider mites and similar pests and by their sucking and biting, they get the ball rolling.

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I'd hack the top half off it and re-root it.

Hit the base with tomato dust and re-plant it in dry mix and see if it survives. If it does then think about watering it.

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You'll definitely have to cut it. Get a clean scab either with some sun exposure(careful!) or sulfur dusting.

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thanks for the tips guys, i just cut it, here picture of the cutting area,

i put the cutting to dry and it will take some time, is almost 70CM cutting so it will take some weeks.

i try to look for small spider or something else but didnt see noting.

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By the way, it probably shout out that root when it noticed that its root system was dying.

In my experience, every time I get a grub infestation and the root system starts dying, the cuts I make from it either already have those roots popping out, or send them out before the cuts even have a chance to scab!

Should be a fast recovery.

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too late, lol.

theres no way in hell i woulda cut that plant.....your third to the last pic says it all....hit the freshly cut areas with powdered sulfur & use a toothbrush to grind it in and brush off the other blackened areas, let dry for a few days & you'd be good to go

cutting perfect;y good roots off makes no sense imho

like cutting a dudes leg off just cuz he got a nasty infection...... :wink:

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Phaemon'sDog following with great interest this thread!

Now in rural Queensland Australia, us rednecked, country bumpkins were so seriously psychologically scarred by the Prickly Pear Plague that we've grown up regarding every cactus since with hatred, suspicion and napalm. In Central Queensland, far CQ, where I'm from, a self confessed, enthusiastic cactus grower has about as much social regard as a convicted child pornographer. I am quite serious! It took years for even Pat Uri to turn his heart around to have a little love for certain cacti.

One of his cow poking Brahman Society graziers he was visiting had property with andesitic volcanic intrusions through limestone country creating a unique scree slope of fossil calyx limey gypsum that Pat Uri had soil chemistry analysed as perfect for peyote. When recommended, his mate looked him squarely in the eye and, with unhidden anger, said "Now Pat - this 'peyote' cactus isn't gonna take over my paddocks like that f*cking Prickly Pear is it?". Pat Uri tried to assure him it wouldn't, nor a necessarily bad thing if it did, as Pat knew of a dozen forum volunteers who could come to remove those "carpets of peyote infestation" if it ever occurred.

Oh dear God, it would be wonderful - but they haven't spoken since. In CQ, besides Opuntia, somewhat Cactoblastis controlled now, we have Harrisia spp. "coral", "dog's tooth" and "devil's rope" cactus that grows thick enough to bind up the caterpillar tread of a 933! Not a pretty sight.

Pat Uri has tried to ride the Queensland Drug Hysteria advising "authorities" Harrisia has ten times the mescaline of Opuntia! - some "prestrike" must be done against the "bikie""druggo""Hell worshippers" but nothing happened. Bit like when Campbell Newman started the rumour about Brisbane Leopard Trees Caesalpinia ferrea having deadly DMT drug because he hated slipping on the seed pods when he was out jogging in his pink leotards - "oh yeah - you can 'trip' on Leopard trees, you know."

But enough anecdote - let's get to the point. Moving to Brisbane I loaded up with CQ grown cactus for cultivation and have fought off the wickedest infection since. Its a local hideous disease that liquefies tissue ground up into black sludge overnight. Drying out doesn't work as the infection just scabs up awaiting moist conditions to continue the assault. Its like an oomycetes infection (like anthracnose in mangoes) and travels up through the vascular tissue with the sap. You can amputate well above infected zone, but new infections will come out from vascular where the germs have travelled up into sound, solid tissue.

Topical sulphur doesn't help but seems to speed tissue liquefaction into black fart-smelling slime worthy of a zombie horror movie special effects. Only the outer green dermis is left - ok - this makes it a supple leather like material for making into containers, but that's not the point. I've had the infection advance 100mm into sound tissue overnight - in Brisbane's sticky humidity.

To save the apex meristems crown - and I have sequentially amputated up to a foot of diseased tissue already, not having much tip left to save - I've gone the "big guns" of strong potassium permanganate solution cauterising black the cut section and the solution penetrating into sound vascular. I paint Condy's onto the "chancre" formed around the aureoles well above the f*cked zone where you wouldn't think compromise could occur.

Had some success now with little DonnaAnna cuttings - that's rooting now in coarse sharp sand - its chancre lesions gone benign scab, but still got some worrying mushy spots. Will post a hi-res photo. With larger specimens the "treatment" it getting more destructive than the disease. Have lost kilograms of Saint Peters.

I have sent Pat Uri a bag of the "black pus" so he can identify the causative - because it ain't just a superficial infection - I don't have microscopes here to look for invasive mycelium or, worst yet, motile spore germs, to make a real diagnosis. (Least he might be able to tell if the polyphenolic alkaloid is destroyed or actually concentrated in the foul juice.)

Yeah - I am worried - all I know is prognosis is very, very poor. Back CQ anywhere you dump old cactus stumps they will flourish into new pups. But I've been "stomping" around Brisbane bush and feral cactus are not a common sight. You see some epiphyte Cereus allied spp. locally in good people gardens but terrestrial other genii are rare.

Thanks for reading - hope I haven't been too "me-me-selfish poor me" with your time - promise when I get the good word, Oh Lord, soon come the day!, I'll post in.

I honestly say unless you have met this evil, black, wet leprosy of ground cactus you won't believe the horror, destruction, and desperation it causes.s It can ringbark healthy plants in a few days and no quick treatment stops its total onslaught.

Peace! PhaemonsDog.

Edited by Pat Uri
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