N fertilizer

Nitrous oxide flux (g N₂O-N ha⁻¹∙d⁻¹)

Corn

52 d

78 d

87 d

100 d

Urea180

74 ± 12

4 ± 1

25 ± 4

7 ± 1

Urea224

105 ± 69

7 ± 4

26 ± 12

11 ± 2

Urea224 + NP

74 ± 18

10 ± 2

28 ± 12

5 ± 1

Split (Urea112 + UAN112)

73 ± 17

7 ± 4

21 ± 10

6 ± 1

LSD (P ≤ 0.05)^‡

NS^§

NS

NS

NS

Sugarbeet

35 d

42 d

54 d

73 d

Control

10 ± 3

13 ± 4

13 ± 3

13 ± 4

Urea146

20 ± 4

15 ± 9

23 ± 5

18 ± 4

Urea146 + NP

17 ± 5

16 ± 4

24 ± 5

28 ± 13

Urea180

24 ± 7

17 ± 1

36 ± 17

29 ± 5

LSD (P ≤ 0.05)^†

NS^§

NS

NS

NS