id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-71636	Kaila, Armi	Some phosphorus test values and fractions of inorganic phosphorus in soils	1965	11	.pdf	application/pdf	5162	220	67	Some criteria for evaluating soil phosphorus tests for lowland rice soils. Coefficients of determination, r 2, and multiple determination, R 2, for the relation between the test values (1), and the fractions of inorganic P extracted by NH,F (2), by NaOH (3), by NH 4 CI (4), and by HS2 04 (5) Sand and Loam and Test Coefficient finesand silt soils Clay soils All samples soils Bray 1 r 2 i2 0.80 0.94 0.49 0.75 R2 i,23 0.83 0.95 0.54 0.76 R2 i, 234 0.83 0.95 0,70 0.78 R2 i, 2345 0.83 0.95 0.70 0.78 Olsen r 2 i2 0.61 0.81 0.35 0.55 R 2 i,23 0.73 0.92 0.65 0.73 R2 i ,234 0.75 0.93 0.76 0.78 R 2 t, 2345 0.75 0.94 0.76 0.78 Acetate r2 i2 0.46 0.56 0.25 0.38 R 2 i,23 0.62 0.56 0.35 0.41 R 2 i,234 0.67 0,89 0.65 0.75 R 2i, 2345 0.68 0.90 0.69 0.77 Acetic acid r 2 i2 0.39 0.004 0.03 0.01 R 2 i,23 0.52 0.08 0.08 0.01 R 2i,234 0.56 0.18 0.13 0.07 R 2 i,2345 0,62 0.57 0.34 0.44 and 83 per cent of the variation by the variation in this fraction and the fraction of alkali-soluble P. In the loam and silt soils these parts are even higher, 94 per cent and 95 per cent, respectively.	cache/afs-71636.pdf	txt/afs-71636.txt