id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-71693	Kaila, Armi; Ryti, Ritva	Calcium, magnesium and potassium in clay, silt and fine sand fractions of some Finnish soils	1968	13	.pdf	application/pdf	6064	228	65	The total linear correlation coefficients between the respective con- tents of these nutrients in the clay and silt fractions on the one hand, and in the silt and fine sand fractions on the other hand, are the following: 6 between Ca Mg K clay and silt fractions o.B4*** o,B6*** o.79*** o.7o*** 0.66*»* 0.40*silt and fine sand fractions The variation in the calcium content does not seem to depend on the variation in the magnesium content: only in the clay fraction a low positive correlation with r = 0.52** may be found. The samples were not dried before the acid was added, and it was found by weighing that the ammonium acetate solution left in the samples diluted the acid from 1.0 N to 0.8 N in the samples of clay fraction, and to 0.9 in the other samples, and correspondingly decreased the ratio of extraction, 1 to 10.	cache/afs-71693.pdf	txt/afs-71693.txt