Table 2.

Effect of nitrogen fertilization on oak trunk diameter after 16 months.

Treatment	Dbh (cm)
0.2 kg N/2.5 cm dbh^{^a}	14.9^{^c}
0.1 kg N/2.5 cm dbh^{^b}	15.1
Control	15.7

↵a 0.50 lb N/in. dbh.
↵b 0.25 lb N/in. dbh.
↵c Treatment differences were not significant at 5% level (DMRT).