id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-5647	UUSITALO, R.; TUHKANEN, H.-R.	Phosphorus saturation of Finnish soils: evaluating an easy oxalate extraction method	2000	10	.pdf	application/pdf	5202	221	65	Even though AER cannot extract all P from Al and Fe oxide surfaces at low P saturation, P sorption by Al- QS and Fe-QS shaken in solutions containing 250 ppm P suggested fairly similar α values for the soils studied: Al Fe P(250) sorption α ——————mmol/kg——————— Al-QS 165 0 18.6 0.11 Fe-QS 0 62 8.4 0.14 There was no exchangeable or dissolved Ca present when Al-QS and Fe-QS were shaken in P solution. Soil inorganic P was characterised by sequentially extracting P from the fractions assumed to be connected to Al and Fe compounds and present as the stable apatitic form.	cache/afs-5647.pdf	txt/afs-5647.txt