I have access to some ATS. Does anyone know if it will lower pH for blueberries? I’ve tried searching for literature on it and can’t really find much. Obviously it’s not a common method.
This is about all I could find so far: http://potassium.ipni.net/ipniweb/region/potassium.nsf/0/58AFA539CC03133085258178006F5140/$FILE/NSS-08%20Thiosulfate.pdf
All I can tell you is that in order to use sodium thiosulfate in photographic processes it has to be mixed in an acid solution, which suggests to me that it isn’t very acid in a straight aqueous solution.
This site suggests you will get a slight acidification:
Unless the mosaic mixture your referencing has a much lower acid content . And unless I misunderstand how Soil PH works. Correct me if im wrong but wouldnt thiosulfate mixture raise PH . I kinda made a picture. 4.5 to 5.5 is Blueberry Prime PH . Lowest Thiosulfate mix is 6.5…seems like another more acidic ingredient like Sulfur Pellets would work? …
I don’t think the pH of the the thiosulfate in solution matters much. It is basically a soluble form of sulfur that you can easily get into the soil. There it gets oxidised to sulfate by some microbes, which does the actual acidification.
I have never used thiosulfates in the garden, but I assume they react faster than elemental sulfur and provide additional nutrients like nitrogen or potassium, depending on the salt.
