Table 1.

Root Response of mature live oaks 6 months after injecting spores of Pisolithus tinctorius (Pt) and fertilizer.

TreatmentFine Root Wt. (g/ft3 soil)*% Ectomycorrhizal RootsRelative Absorbing Potential
Water control12.2c118b22c
Fertilizer23.5bc19b45c
Pt spores39.7ab44a2175b
Pt spores + Fert.55.1a57a2314a

  • ↵1 Means in a column sharing a common letter are not significantly different (P=0.05) according to Duncan’s New Multiple Range Test. Variance between blocks (trees) was not significant.

  • ↵2 Nearly half are Pisolithus tinctorius ectomycorrhizae.

  • ↵* 1 ft3 = 0.028 m3