Most conifer forest land has a pH of 4.5. Most garden plants prefer a pH of 6.5. Some plants prefer a pH of 7.0 or higher.
I want to ask him some more questions about this, but asking questions is kinda tough.
I think one of the first things he does with confierous land is the hugelkultur stuff. I think the act of digging into the deeper soil brings up a higher pH - so that is an instant help. Next, I think that composting all of those trees in the hugelkultur raises the pH a lot - mostly because compost tends to end up at a pH of 7.0.
Next is water. Sepp is keenly aware that water saturated soil tends to have a lower pH. So his hugelkultur beds are dry at the top and wet at the bottom. So stuff that prefers a higher pH also generally likes drier soils. And has a lovely home at the top of the beds.
interesting, we have large areas of acid soil on our property, however there is an area that is quite alkaline..it is where we have done a lot of burning of brushpiles..we tend to use this soil in areas where we need more alkalinity..
we also use carbon from our wood boiler and bury it for alkalinity..however ..we do occasionally have small scraps of drywall that we incorporate into our compost pile..which also is basically lime..it is a natural mineral that can be reincorporated back into the soil..at a small rate..
Bloom where you are planted.
Remember he's breeding 4-20 varieties of worms which balance soil pH by excreting CaC (calcium carbonate) so there may be no need to spread lime especially if you have to hike each bag up the mountain in a ruckzack. Not to mention, how far are the Dolomiti? Much of the alps is limestone type rock.
You shouldfeed the eggshells back to the chicken and I think you would need a poultry farm to get sufficient egg shells to change your soil.
There is one thing what I always wonder in my Hügelkultur beds: How do you get the right amount of NPK? As for the acidity I have a test kit which might be accurate enough, but I think of purchasing a NPK test kit to know weather I shoul throw some lime in or blood and bone and the like.
This is when you build your soil rather then using the soil directly (many people don't have really soil on their land) then you don't really know what you get.
He says he doesn't use lime, because he lives in the Alps, which are rich in limestone.
Conifers make soil acidic, while compost from broad leaves slowly tends to bring back the pH to 6 or 7. So basically either you correct the soil with lime or add large amounts of organic matter.
Since he is not growing conifers and his soil is already rich in lime, and he is also adding plenty organic matter, I guess he already has the soil around pH 7, so he doesn't need to add any lime.
You can do this in your own garden too (no need for lime, only organic matter), but what if you live in a cool and wet climate with a very acidic soil like me? Even after adding compost, the rain could make the soil slowly acidic again.
And yes, dry soils (like deserts) tend to be more alkaline, while wet soils acidic (like peat).
Ashes also make the soil alkaline, but can make it too much, if you use too much.
in Portugal, sheltered terraces facing eastwards, high water table, uphill original forest of pines, oaks and chestnuts. 2000m2
in Iceland: converted flat lawn, compacted poor soil, cold, windy, humid climate, cold, short summer. 50m2
Paula Edwards wrote:What is so bad about using lime or dolomite?
It is an input. Personally I am trying to use a minimum of inputs. So if I have acidic soil and lots of conifers I can make hugelculture beds which are very productive and buffer the acidic soil. The solution to many soil problems is organic matter. Too much salt, organic matter; too acidic, organic matter; not enough fertility, organic matter; too much water, organic matter; too little water, organic matter. Organic matter is derived primarily from carbon in the air. Carbon you don't have to buy. My goal is for my only inputs to be seed and perhaps broad spectrum stone.
I think you could throw in concrete rubble as well, that is an input too, but it is readily available for no money.
Maybe you have to give your kids a hammer and pay 50 cents per pulverized bucket of concrete rubble.