Why is the productive capacity of eroded Ulysses soil less than that of eroded Harney soil?
◦ Ulysses soil is more rapidly eroded than Harney soil.
◦ Ulysses soil has greater OM content subject to microbial oxidation than Harney soil.
◦ Ulysses soil has lesser bulk density than Harney soil.
◦ Ulysses soil is shallower than Harney soil.