Table 4 Grains, straw, and total N uptake (kg ha-1), and NUE (kg N uptake kg−1 of applied N) in soils amended with sole urea or urea + biochar treatments.

From: Influence of variable biochar concentration on yield-scaled nitrous oxide emissions, Wheat yield and nitrogen use efficiency

Treatments

Total N

in grains

Total N

in straw

Total N uptake

Percent increase over urea

NUE

(%)

Control

28.7 ± 6a

19.3 ± 2a

49 ± 7b

  

Urea

59.6 ± 9b

30.4 ± 5b

90 ± 9b

 

27

B 5

33.5 ± 5c

24.6 ± 4b

58 ± 6b

 

6

B 10

36.3 ± 7b

28.7 ± 5b

62 ± 5b

 

9

Urea + B 5

65.9 ± 8b

35.1 ± 6b

101 ± 16b

12

35

Urea + B 10

72.3 ± 5b

41.7 ± 7b

114 ± 8b

27

43

  1. Values within a column followed by the same letter are not-significantly different at P < 0.05.
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