Table 2 Survival rates and mean height and diameter of seedlings.^{^a}

Species and treatment cm cm	Height percent	1981 Diameter cm	Survival^{^b}cm	Height^{^c} percent	1982 Diameter^{^c} percent	Survival^{^b}
Sawtooth Oak
Pt	44.0	.42	82	59.5	.85	69
Tt	45.4	.42	73	49.8	.59	40
Control	41.5	.38	64	51.3	.62	47
Pin Oak
Pt	35.9	.56	77	50.1	.96	68
Control	36.8	.57	75	46.1	.85	66

↵a Height and diameter values include only seedlings surviving unmowed to March, 1982. Survival figures include only unmowed trees surviving in each year.
b Pt significantly enhanced survival for sawtooth oak in 1981 (X² = 8.26, p .02) and in 1982 (X² = 15.35, p .001).
c Between 1981 and 1982, Pt treated sawtooth oak seedlings grew significantly more in height (F = 16.16, p .001) and diameter (F = 15.20, p .001) than Tt and control seedlings. Pin oak seedlings treated with Pt also grew significantly more in height (F = 11.28, p .01) and diameter (F = 14.20, p .005).