Horiba
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Search complete. 1 mention across 1 episode found for "Horiba".
Sep 24, 2026
Podcast Extra: Why Corn Is Dying Early with John Kempf & Brody Benton
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79:30John KempfGUEST
Um, so I think there's less expensive soil options that kind of remove the argument for why EDTA would be favorable.
J
79:37John KempfGUEST
Uh, to Justin's last question about plant sap pH, uh, we standardized and said that our target plant sap pH was 6.4. Um, and this was based on research work that was done back in the late '80s by Bruce Tainio using handheld Horiba meters where he was measuring plant sap pH and he was able to correspond, uh, leaf pHs above 6.4 with certain types of insect pressure and then pHs below 6.4 with certain types of disease pressure.
J
80:15John KempfGUEST
And, um, we've, we've just started having conversations about needing to revisit that, um, and what those ideal targets should be.
J
80:25John KempfGUEST
So, um, our general perspective at this point after looking at all the data that we've accumulated over the last decade plus is that, um, yes, it's true that many plants are too acidic becau- and that is associated with increased disease susceptibility, and also that 6.4 is probably not the right target.