id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-5835	SAARELA, I.; SALO, Y.; VUORINEN, M.	Effects of repeated phosphorus fertilisation on field crops in Finland 1.Yield responses on clay and loam soils relation to soil test P values	2006	18	.pdf	application/pdf	12864	549	70	extract- ed little P from most Finnish mineral soils indicat- ing a low content of dissolved phosphate in soil solution, or a low intensity of soil P, in agreement with Pw. The P values determined by the Finnish acid (pH 4.65) ammonium acetate method (PAc) used since the 1950s, have predicted the availability of soil P fairly well in moderately and weakly acid soils (Keränen et al. 1963, Saarela 2002).	cache/afs-5835.pdf	txt/afs-5835.txt