Table 2.

Pearson correlation coefficients between foliage transparency, as determined according to the classification of Schomacher et al. [17] and Eichhorn et al. [18], and inoculum density of Phytophthora × cambivora, in terms of cfu/g of soil and proportion (%) of fine roots infected by P. × cambivora, in 40 randomly selected beech trees.

	Foliage Transparency	Inoculum Density (cfu/g of Soil)	Proportion of Infected Fibrous Roots (%)
Proportion of infected fibrous roots (%)	0.466 **	0.508 **	1
Foliage transparency	1	0.548 **	0.466 **
Inoculum density (cfu/g of soil)	0.548 **	1	0.508 **

** Significant for p ˂ 0.01.