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Yeah seeing more symptom in older reused soil is sign of higher viral load. That mate I mentioned, his badly affected plant was the one in the old soil reused for a few years and refreshed with amendments every year, load in the soil builds and builds each year, no crop rotation. His unaffected plants in the new soil and new pots, but the cut he runs is tolerant to the viroid. My potato farmer mates plant potato in a circle one year, then oats dry the next, then alfalfa for cattle next year then leave fallow for a year, then 5 years after having potato in that field they will plant it again with potato. All for potato viroid.Quite a lot to absorb; thanks for the heads up. The marked difference of the large plant in the foreground and the darker specimen in the rear is veg time; also there was a fresh batch of soil mixed for the gal in the back. As a proof of my suspicion, I'm going to repot the paler gal into the new mix of soil in the morning along with a generous sprinkle of EWC and crushed eggshell mixed with crushed crab shell. This can also affirm my claim in another thread that even later stage efforts can benefit from this cruel manipulation.
Never heard it before. ThenYeah seeing more symptom in older reused soil is sign of higher viral load. That mate I mentioned, his badly affected plant was the one in the old soil reused for a few years and refreshed with amendments every year, load in the soil builds and builds each year, no crop rotation. His unaffected plants in the new soil and new pots, but the cut he runs is tolerant to the viroid. My potato farmer mates plant potato in a circle one year, then oats dry the next, then alfalfa for cattle next year then leave fallow for a year, then 5 years after having potato in that field they will plant it again with potato. All for potato viroid.
But yeah that plant behind showing clear signs too, the darker healthier one. You can see the way the leaflets fold under each other on some leaves, but not on other leaves. That shows the trait is not a genetic trait, some plants do that naturally, but when I see it on some leaves strongly and others not, then almost all the time its viroid. If you are getting lateral branching too, and ever having trouble rooting cuts some rounds, all points to that issue...
We (Weed growers) are affected by Hops Latent Viroid among others but same deal...Never heard it before. Then
"Viroids are the smallest known agents of infectious disease [1]. The first viroid to be identified and characterized was Potato spindle tuber viroid (PSTVd). Potato spindle tuber disease was described in the early 1920s in Irish Cobbler potato (Solanum tuberosum L.) in North America by Martin [2], who suggested that the disease might be caused by an infectious virus. Shultz and Folsom [3] investigated the disease and found that it was present in the tuber and could be spread mechanically in the field by leaf damage, tuber and stem grafts, with some evidence of insect transmission by aphids. Symptoms of the disease were characterized by stunting of the plants and elongated tubers; hence the disease was named ‘spindle tuber’. Although the causal agent was initially described as the potato spindle tuber ‘virus’, it was later found not to be a conventional virus, with a nucleic acid encapsidated by a viral protein, but a small, naked RNA molecule [4], [5], [6]. Diener [6], [7], credited with the discovery of this novel pathogen, advanced the concept of viroids and proposed the term ‘viroid’ to denote this new class of subviral pathogens. Similar observations of infectious, low-molecular weight nucleic acids were reported as the causal agent of citrus exocortis disease [8], [9] and chrysanthemum stunt disease [10], and confirmed the viroid concept proposed by Diener."
At: https://www.sciencedirect.com/science/article/pii/S0168945214001083
Happening here.
I bought a commercial compost and it was full of suckers. Since aphids are vectors of transmission for these viroids, I'm afraid sh!t is worse than I first thought.We (Weed growers) are affected by Hops Latent Viroid among others but same deal...