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While the particular video and device are being presented in reference to corrosion potential for pipelines, I’m wondering if the techniques and instruments shown are how “redox” is measured, though they call it “Soil Resistivity”.

Understanding Soil Resistivity and pH Measurement: Virtual Brew 7/20/2023

Yes, it is difficult and expensive to test Eh. I don’t know of a Farm that does more on site testing than us, and we have tinkered with Eh but discontinued because it is difficult and expensive.

However! Understanding how it works is still probably the most important thing for you to understand about soil dynamics. I say that without…

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Hi Greg, I remember trying to find that info also and was not able to.

I’m in San Diego and every farm I know of is struggling with PM worse than normal. Our farm used to have terrible problems with it, but now it’s quite minimal. Over the last year we did extensive trials to figure out the conditions that shift the relationship between…

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I’m due to revisit the redox course, but I’ve found that the ‘map’ Olivier provides is an actionable diagnostic tool. In my case I caused a downy mildew problem in spinach by increasing pH early in the spring, I consulted the map to find that downy mildew is an organism that occupies the high ph low eh part of the map, and that guided my…

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