Table 3.

Chemical and particle size analysis of the clay and sandy clay loam (SCL) experimental soils.

Texture	pHb	Al3+c,d	H + Ale,f	Ca2+d	Mg2+d	K + g	P7	O.Ch	Sand	Silt	Clay
		--------- cmolc dm−3 ----------					mg dm−3	g dm−3	----- g kg−1 -----
Clay	4.5	0	5.74	2.9	1.1	0.16	1.30	22.4	274	113	612
SCLa	5.2	0	2.03	3.4	1.5	0.45	14.6	11.3	693	13	294

^aSandy Clay Loam.

^bpH in CaCl₂ 0,02 M.

^cExchangeable potential acidity.

^dExtraction by KCl 1 M.

^eTotal potential acidity.

^fDetermined by pH SMP buffer.

^gExtraction by Mehlich I.

^hOrganic Carbon, determined by Walckley Black.