Table 6 Nitrogen efficiency indexes for three Canola genotypes under different N applications without and with yeast extract.

Genotypes (G)

G1 (AD201)

21.01 ± 0.592a

98.51 ± 4.132b

65.00 ± 2.249a

22.87 ± 0.812a

G2 (Topaz)

22.20 ± 0.684a

106.75 ± 4.469a

65.76 ± 2.457a

22.15 ± 0.717a

G3 (SemuDNK 234/84)

21.79 ± 0.957a

108.49 ± 5.257a

64.30 ± 2.375 a

21.32 ± 0.690a

Fertilizer (F)

F0 (control)

–

–

41.74 ± 1.089e

29.19 ± 0.683a

F1 (95 kg N ha⁻¹ without yeast)

19.32 ± 1.332c

87.15 ± 5.630d

63.85 ± 1.085d

22.18 ± 0.479bc

F2 (120 kg N ha⁻¹ without yeast)

18.97 ± 0.704c

83.90 ± 2.279d

67.24 ± 0.759c

22.60 ± 0.512b

F3 (142 kg N ha⁻¹ without yeast)

21.06 ± 0.537bc

106.37 ± 1.880bc

72.21 ± 0.945b

19.80 ± 0.313d

F4 (95 kg N ha⁻¹ with yeast)

22.19 ± 0.810b

103.23 ± 4.497c

67.17 ± 0.912c

21.57 ± 0.383c

F5 (120 kg N ha⁻¹ with yeast)

23.19 ± 0.597ab

117.44 ± 5.255b

67.72 ± 1.533c

19.92 ± 0.550d

F6 (142 kg N ha⁻¹ with yeast)

25.27 ± 0.633a

129.41 ± 3.330a

75.22 ± 1.229a

19.54 ± 0.247d

Interaction

G1

F0

–

–

42.11 ± 0.848g

30.53 ± 0.580a

F1

17.47 ± 1.159f

75.51 ± 5.857j

64.27 ± 0.805ef

23.19 ± 0.421cd

F2

21.18 ± 0.506bcdef

88.30 ± 3.399ghij

67.88 ± 1.650cdef

24.01 ± 0.367c

F3

20.00 ± 0.494def

101.33 ± 2.121defghi

70.92 ± 1.300abcd

19.77 ± 0.846fg

F4

22.28 ± 1.367abcde

99.96 ± 8.079efghi

66.81 ± 1.772def

22.37 ± 0.538cde

F5

21.21 ± 0.616bcdef

102.45 ± 7.315defghi

68.93 ± 2.589bcdef

20.84 ± 1.084defg

F6

23.94 ± 1.380abcd

123.54 ± 7.691abcd

74.07 ± 2.063abc

19.40 ± 0.523g

G2

F0

–

–

41.66 ± 1.175g

29.05 ± 1.535ab

F1

19.20 ± 0.842def

90.67 ± 0.938fghij

63.69 ± 1.110f.

22.07 ± 1.027cdef

F2

17.98 ± 0.770ef

79.43 ± 4.062ij

68.02 ± 0.269cdef

22.66 ± 0.379cde

F3

22.86 ± 0.683abcd

112.29 ± 1.790bcdef

75.10 ± 0.780ab

20.35 ± 0.291efg

F4

23.68 ± 1.844abcd

110.21 ± 1.446bcdefg

68.60 ± 0.926cdef

21.60 ± 0.556cdefg

F5

23.56 ± 0.646abcd

120.45 ± 4.005abcde

66.90 ± 0.708def

19.57 ± 0.332fg

F6

25.12 ± 0.691ab

127.42 ± 4.467abc

76.37 ± 1.102a

19.73 ± 0.227fg

G3

F0

–

–

41.44 ± 0.838g

27.98 ± 1.125b

F1

20.49 ± 2.077cdef

95.27 ± 5.434fghij

63.60 ± 1.727f

21.27 ± 0.774defg

F2

17.76 ± 1.202ef

83.98 ± 3.824hij

65.83 ± 1.619def

21.13 ± 0.895defg

F3

20.32 ± 0.552cdef

105.47 ± 2.016cdefgh

70.61 ± 1.378abcde

19.27 ± 0.285g

F4

20.60 ± 0.460bcdef

99.53 ± 3.142efghi

66.10 ± 2.166def

20.73 ± 0.701defg

F5

24.82 ± 0.367abc

129.44 ± 8.538 ab

67.33 ± 2.376def

19.34 ± 1.303g

F6

26.74 ± 0.683a

137.27 ± 1.967a

75.22 ± 2.441ab

19.49 ± 0.619g

ANOVA

df

Genotypes (G)

2

< 0.001

Fertilizer (F) level

6

< 0.001

G × F

12

< 0.001