Clipping stage

Nitrogen level (kg/ha)

GS

CPF (%)

OMF (%)

EP ($/ha)

Non-clipping

Control

56^ab

2.0^f

98.9^a

3674.7^ab

40

60^a

2.6^df

98.8^a

3324.1^bc

80

49^ac

4.8^a

67.9^cd

3743.0^a

120

46^ac

2.4^ef

97.8^d

2886.0^f

160

54^ac

2.0^f

97.8^d

3151.5^ce

Tiller stage

Control

59^a

2.7^df

97.8^d

3251.7^bd

40

40^c

2.4^ef

97.8^a

2908.1^f

80

42^bc

4.0^b

98.0^bd

3090.4^de

120

59^a

2.6^df

98.6^ac

3336.5^b

160

51^ac

3.2^cd

98.9^a

3038.7^ef

Booting stage

Control

41^c

2.2^f

98.6^ab

2553.3^g

40

44^bc

2.3^f

98.0^ab

2606.9^g

80

47^ac

3.1^de

98.1^bd

3305.2^bc

120

42^bc

2.4^ef

99.1^a

2651.1^g

160

47^ac

3.9^bc

99.0^a

2501.1^g