Why does b-casting tie up nutrients & why can't your roots reach b-cast nutrients? I believe corn roots run all over the place & easily 6' deep in cases...ours seem to anyway. Dug pits seem to prove that out.

When we b-cast, it's not like NONE of the nutrients fall beneath the row.

If you remember cultivating, it seemed pruning roots was pretty easy to do when corn was 12" high & shovels were still set 8" away

Where do you get the info that "removal rates" are based upon banding, b-casting or whatever? I thought I read they analyzed the nutrients in the grain (corn-beans-wheat) and stalk of a mature plant. Did that somehow in lab by burning the grain or something or another then analyzing. Probably some of you guys that took chemistry know something about it. So-why would it make any difference what method of fertilizer dispersion/application was used to grow that grain? How would lab guy know, or why should he know? If grain has so much P or K in it, then that's what it is.

I don't think removal rate has anything to do with fertilizer source or methods.