Yes, PODSOL is a Scrabble word!

Letter values in Scrabble US: P 3, O 1, D 2, S 1, O 1, L 1.

Is it a valid word?

PODSOL is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

a soil that develops in temperate to cold moist climates under coniferous or heath vegetation; an organic mat over a grey leached layer

Also: podzol soil, podsol soil, podsolic soil.