Old Uncle Ben
Well-known member
"Ca level is at 87%"? Huh? I thought my area was one of the few that was pure limestone rock.
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Triple Super Phosphate Dose for Indoor Pots
- Thread starter InsaneMembrane
- Start date
"Ca level is at 87%"? Huh? I thought my area was one of the few that was pure limestone rock.
Old Uncle Ben
Well-known member
Must be nice to be able to grow outdoors without fear of ending up in prison! Impressive!
Been working the devil's clay all my life. I have a farm with heavy clay loam, lime is thru the roof, pH is 8.2. Sulphur additions (creates gypsum and the ion exchange thingie) and plenty of humus/compost/mulch is the only solution. I also contracted the planting of legumes and elbon rye on the land for 2 years in a row. Very expensive "solution" that really doesn't have much of an impact regarding improving soil quality unless you do it year after year.
Old Uncle Ben
Well-known member
Just a thought @Chunkypigs, RootBuilder, cut in half, bottomless, would be an excellent way to grow at your spot. You'll get the benefit of root pruning, raised beds which contain improved soil used as the backfill, etc. I grow large tropical trees in a greenhouse and it's all I'll use. I do use the full width which I believe is 18", backfilled to a depth of around 12-14" with a layer of mulch, pine needles if I can get them otherwise pine bark and/or fallen tree leaves as you'd find in a natural cloudforest. 2 heavy duty electrical cable ties would tie the ends together just fine. Top off with Osmocote 15-9-12 and you're good to go.
I buy the roll, start with a size I like then add panels to it to expand the pots at a later date. https://rootmaker.com/wholesale-store/81
InsaneMembrane
Member
@Chunkypigs sounds about right!
But how do I calculate the amount of P needed for bags of soil or cft instead of kg/ha without going halfway through a bachelors degree in agronomy ?
Lets say I want to add 100ppms of P to a bag of soil, what’s the equation ?
But how do I calculate the amount of P needed for bags of soil or cft instead of kg/ha without going halfway through a bachelors degree in agronomy ?
Lets say I want to add 100ppms of P to a bag of soil, what’s the equation ?
@Chunkypigs sounds about right!
But how do I calculate the amount of P needed for bags of soil or cft instead of kg/ha without going halfway through a bachelors degree in agronomy ?
Lets say I want to add 100ppms of P to a bag of soil, what’s the equation ?
first thing is you need the mass density figure of your soil in grams per ml.
87% Ca base saturation is the target for heavy clay soil not the test result. a heavy clay soil like mine needs huge additions of material to lighten it, I use rice hulls and perlite."Ca level is at 87%"? Huh? I thought my area was one of the few that was pure limestone rock.
InsaneMembrane
Member
@Chunkypigs 0.16 g/cm3
