id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-5736	PELTOVUORI, T.	Phosphorus extractability in surface soil samples as affected by mixing with subsoil	2002	9	.pdf	application/pdf	4873	232	57	Despite the importance of sampling as part of soil P management, few studies have dealt with possible errors induced by improper sampling or bulking of original sam- ples to composite samples. Decreasing the area of high P content soils would be important in protecting the surface waters because the concentration of PO4-P in runoff waters is primarily controlled by the P status of surface soils (Yli-Halla et al. 1995).	cache/afs-5736.pdf	txt/afs-5736.txt