The Czech soil triangle is shit. We do recognize písčité/hlinité/jílovité půdy (the three major categories on the left) but the only triangle that isn’t just a translation of the US one (where loam = hlína (dirt) and silt = prach (dust)) is this (from ČSN industry standards), which does not differentiate between silt and clay, the three corners are gravel, sand and fine particles:
I guess they had no technology to differentiate particles below 50 µm so they just separated sand and gravel from the rest and made them differentiated them with a 2mm sieve to still have a 2D chart, which could have just been two 1D axes
The real question is: clay, sand or silt?
Huh, funny to see that graph look like this. The Dutch one looks a bit different:
The Czech soil triangle is shit. We do recognize písčité/hlinité/jílovité půdy (the three major categories on the left) but the only triangle that isn’t just a translation of the US one (where loam = hlína (dirt) and silt = prach (dust)) is this (from ČSN industry standards), which does not differentiate between silt and clay, the three corners are gravel, sand and fine particles:
I guess they had no technology to differentiate particles below 50 µm so they just separated sand and gravel from the rest and made them differentiated them with a 2mm sieve to still have a 2D chart, which could have just been two 1D axes
https://youtu.be/l_hQRDkhZWE
Commonly clay, but looks like OP used sandy loam :D
Oops, too much sand! The loam is sandy now!
Oh snap!