Hi all,
I often wonder, would taking plant cuttings, drying them out then throwing them through a blender be any use if you were to put them under the substrate on startup?
Too much plant mulch, even after drying, could easily go anaerobic - I suspect
I think
@alto is probably right, and that the leaf material would give you a sudden flush of nutrients (leaves are sugar and chlorophyll (protein) rich), but not much in terms of slow release nutrients. This is when I find the <"
BOD concept"> useful.
Any of the nutrient dense substrates from Tropica, Dennerle, sera etc likely will provide a similar long term “boost” to your substrate
It would really be down to how slowly the release of the nutrients occurs. My suspicion is that you could control the temperature that you <"
calcined a nutrient rich clay at"> to give a prolonged release of some nutrients, and there would be a trade of between the calcining temperature and the hardness of the substrate (higher temperature = harder and slower release).
Maybe the roots take so long to break down because they're in fact the storage facility of the plant. It's the last chance saloon for the plant if you like so if the roots are in tact there's still a glimmer of hope of it starting to sprout again one day given half the chance?
Large roots have a decent supply of stored nutrients, so it will take them a long time to die. Some plants definitely have the ability to regrow from a "root", although often what we think of as roots (rhizomes) are actually modified shoots.
Because I don't tend to break down my tanks once they are set-up (or move the plants around etc.) I just need to a substrate that supports root growth, after that the natural processes will produce a diverse and resilient microbial environment, with varying REDOX and nutrient gradients as we move away from the root rhizosphere.
I've tended to use 90% sand, 5% leaf mould and 5% clay, but my suspicion would be that it doesn't really matter where you start, eventually you will end up in the same place.
I could be cynical and say that there is no money to be made by suggesting that "time" is the magic ingredient, because you can't package and sell it.
cheers Darrel