But here I am sampling a leaf from corn in the V6 stage of growth. It is easy to see the uppermost leaf with a collar. The leaves above it may be big, but they have no collar (or white ring on the undercarriage) and are still in the whorl. So don't take those. I also like to use some scissors to get an even and uniform cut of an entire leaf. Plus it's faster. I guess it's best to use stainless scissors, and not some that may be rusty. So the old saying of: "If you don't have time to do it right, when will you have time to do it over?" certainly applies to tissue sampling.
I am off on yet another fertilizer mission next week, but will keep you posted of events both on and off the NCRS. Thanks for reading.