Effect of Soil Properties on Growth of Quercus ilex L. in Humid and Cold Mountains of Morocco

Table 3

Particle size characteristics of soils.

Texture (%)
Site	Fraction of grain sizes (mm)
	>5	0.4–5	0.2–0.4	0.063–0.2	0.04–0.063	<0.04
Zerrouka (a)	17.54^a ± 1.82	15.42 ± 1.42	14.21^a ± .07	39.07^a ± 4.09	7.78 ± 0.40	6.91^a ± 2.78
Zerrouka (b)	18.88^a ± 3.54	46.18 ± 8.09	11.57^b ± 1.50	17.75^b ± 2.73	2.84 ± 0.69	2.46^a ± 2.69
Ras el ma	31.75^b ± 1.80	23.31 ± 0.65	7.01^c ± 0.29	27.77^c ± 1.02	6.79 ± 0.16	3.31^a ± 1.02

Values marked with different letters indicate a significant difference (, n = 3). The absence of letter indicates that the soil fractions do not follow a normal law.