Meadowlark
Gardner, Angler, Adjunct Professor, and Rancher
Interesting comment. Thank you.@Meadowlark I am gonna point out you better kill some tree rats or something and toss them in there. Your test is missing a natural part of hugelkulture, its environment and the protein containing critters that come with it. After all the decomposition will be helped with the amino acids from the protien breakdown and I suppose the Nitrogen suck of the decomposition will moderate if you add N. I guess worms or something else might do it too, but it is a container and that breaks the natural plan and puts the parts in your hands.
A couple of things to point out:
1) my materials are as natural as can be...literally right off the property...and very well decayed.
2) My garden soil used in the tub is right out of a thick alfalfa bed turned under and tested out with high nitrogen values...same as the control plants will be in.
I've also wondered about the N2 but feel those facts of decayed materials and alfalfa bed might mitigate any N2 "suck" but that's all part of the experiment.
Were you serious about the tree rats? LOL. I researched briefly but didn't find where the "old timers" used animal protein in their hügelkultur beds. Would be interested if you have a reference. In doing just another very brief research, I learned this stuff goes back literally centuries. Fascinating.