N fertilizer

Root Yield^†

Sucrose loss to molasses^†

Net sugar^†

Undrained

Tile-drained

Undrained

Tile-drained

Undrained

Tile-drained

2012

-----------Mg∙ha⁻¹-----------

---------------------------------------%-----------------------------------

Control

43.8 ± 1.9 a

51.3 ± 5.4 a

1.62 ± 0.04 a

1.68 ± 0.05 b

16.6 ± 0.4 a

16.9 ± 0.6 a

Urea146

47.0 ± 4.7 a

48.6 ± 4.0 a

1.74 ± 0.09 a

1.86 ± 0.12 ab

16.9 ± 0.8 a

16.6 ± 0.2 a

Urea146 + NP

44.7 ± 3.1 a

45.5 ± 5.3 a

1.75 ± 0.07 a

1.95 ± 0.12 a

17.1 ± 0.4 a

16.5 ± 0.2 a

Urea180

45.6 ± 1.3 a

48.8 ± 5.8 a

1.89 ± 0.06 a

2.03 ± 0.08 a

16.1 ± 0.3 a

15.6 ± 0.2 a

LSD (P ≤ 0.05)^‡

NS^§

NS

NS

0.21

NS

NS

2013

Control

39.4 ± 1.6 a

36.7 ± 2.2 a

1.54 ± 0.14 a

1.69 ± 0.20 a

14.5 ± 0.4 a

14.4 ± 0.4 a

Urea146

40.1 ± 0.5 a

41.0 ± 1.1 a

1.58 ± 0.05 a

1.81 ± 0.12 a

14.3 ± 0.5 a

13.5 ± 0.6 a

Urea146 + NP

39.6 ± 0.6 a

37.0 ± 1.7 a

1.74 ± 0.08 a

1.67 ± 0.08 a

13.8 ± 1.6 a

14.3 ± 0.2 a

Urea180

36.7 ± 1.0 a

35.8 ± 3.8 a

1.73 ± 0.10 a

1.68 ± 0.12 a

14.0 ± 0.1 a

13.9 ± 0.5 a

LSD (P ≤ 0.05)^‡

NS^§

NS

NS

NS

NS

NS