id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-71679	Kaila, Armi	Release of nonexchangeable potassium from Finnish mineral soils	1967	12	.pdf	application/pdf	5947	308	68	Discussion The »more readily available nonexchangeable potassium» represents a rather indefinite fraction of soil potassium. On the other hand, depletion of available soil potassium by crops may decrease the level of potassium so much that diffusion of nonechangeable potassium to solution will be- come dominant.	cache/afs-71679.pdf	txt/afs-71679.txt