Table 7.

Influence of PBZ on height and mean leaf size of containerized English (Quercus robur L.) and evergreen oak (Quercus ilex L.) placed outdoors over a 9-week period after the cessation of a 3-week drought period.^{^z}

Treatment	Evergreen Oak		English Oak
Treatment	Height (m)	Mean leaf size (cm²)	Height (m)	Mean leaf size (cm²)
Control	1.05	8.9	1.15	49.3
2 mL (0.06 fl oz) PBZ foliar spray	0.96^ns	8.4^ns	0.99^ns	43.1^ns
4 mL (0.12 fl oz) PBZ foliar spray	0.83^ns	6.0*	0.86*	32.2*
5 mL (0.15 fl oz) PBZ root drench	0.79*	4.5*	0.80*	28.5*
10 mL (0.3 fl oz) PBZ root drench	0.68*	4.3*	0.76*	26.7*
LSD	0.245	2.759	0.276	15.26

↵^zEnglish oak PBZ-treated plants: all values mean of ten trees. English oak control: all values mean of two trees.
Evergreen oak 2 mL (0.06 fl oz) PBZ foliar spray and 5 mL (0.15 fl oz) PBZ root drench-treated plants mean of eight trees. Four milliliters PBZ foliar spray and 10 mL (0.3 fl oz) PBZ root drench-treated plants mean of six trees.
Controls mean of four trees.
*Significantly different from controls according to least significant difference (LSD) at P < 0.05; ^ns = not significantly different from control value.
PBZ = paclobutrazol.