Level of fertilization (kg N/ha)

Regeneration

F₁

F₂

F₃

F₄

0

33.20^a

27.33^a

29.82^a

28.20^a

100

43.04^ab

31.97^a

35.57^a

31.90^a

200

47.12^b

34.12^a

39.67^a

31.17^a

ESM

2.34

1.40

1.91

0.81

p

0.023

0.123

0.095

0.136