id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-5747	SAARELA, I.; JÄRVI, A.; HAKKOLA, H.	Phosphorus status of diverse soils in Finland as influenced by long-term P fertilisation I.Native and previously applied P at 24 experimental sites	2003	16	.pdf	application/pdf	10158	472	69	Results and discussion Total and acid-extractable P Total concentrations of soil P at the start of the experiment (Table 3) agreed well with the earli- er results for Finnish soils (Kaila 1963), as the somewhat higher minimum and mean values re- flect the continuous accumulation of fertiliser P over the intervening years. Over the years, the availability of soil P has gradually improved as a result of balance sur- pluses, and note needs to be taken of this so that heavy P applications are not continued for an unnecessarily long time.	cache/afs-5747.pdf	txt/afs-5747.txt