id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-115347	Uusitalo, Risto; Suojala-Ahlfors, Terhi; Uusitalo, Risto	Yield response of iceberg lettuce (Lactuca sativa Capitata group) to phosphorus fertilisation in a boreal soil	2022	9	.pdf	application/pdf	5853	281	58	Soil sampling and soil P analyses Soil samples, composed of 15 subsamples, were taken from the (0–20 cm) plough layer of each plot prior to the fertilisation. The used extraction reflects the readily soluble P concentration in soil and extracts about the same amount of soil P as water at 1:50 w/vol ratio (Yli-Halla 1989).	cache/afs-115347.pdf	txt/afs-115347.txt