id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-71886	Tähtinen, Hilkka	The effect of boron fertilization on spring cereals 	1974	7	.pdf	application/pdf	2753	226	67	The size of yield when boron was not applied did not depend significantly on the pH, calcium, phosphorus or boron content of the soils. Threshold values of boron contents in Dutch soils in relation to boron deficiency symptoms in beet (heartrot).	cache/afs-71886.pdf	txt/afs-71886.txt