Table 1 Photosynthetic pigments for the three Canola genotypes under different N applications without and with yeast extract.

From: Response of Canola productivity to integration between mineral nitrogen with yeast extract under poor fertility sandy soil condition

Studied factor

Chlorophyll a

Chlorophyll b

Chl. a/b ratio

Genotypes (G)

G1 (AD201)

4.06 ± 0.132a

1.56 ± 0.046a

2.68 ± 0.157b

G2 (Topaz)

4.11 ± 0.117a

1.47 ± 0.048b

2.87 ± 0.167ab

G3 (SemuDNK 234/84)

4.16 ± 0.092a

1.44 ± 0.058c

3.00 ± 0.177a

Fertilizer (F)

F0 (control)

2.96 ± 1.657e

1.56 ± 0.026d

1.91 ± 0.087d

F1 (95 kg N ha−1 without yeast)

3.48 ± 0.123d

1.73 ± 0.021a

2.02 ± 0.084d

F2 (120 kg N ha−1 without yeast)

4.35 ± 0.046bc

1.66 ± 0.015b

2.63 ± 0.049c

F3 (142 kg N ha−1 without yeast)

4.25 ± 0.068c

1.58 ± 0.020c

2.70 ± 0.062c

F4 (95 kg N ha−1 with yeast)

4.42 ± 0.054bc

1.45 ± 0.060e

3.07 ± 0.115b

F5 (120 kg N ha−1 with yeast)

4.70 ± 0.035a

1.23 ± 0.021f

3.84 ± 0.066a

F6 (142 kg N ha−1 with yeast)

4.62 ± 0.150ab

1.22 ± 0.025f

3.80 ± 0.135a

Interaction

G1

F0

2.68 ± 0.009h

1.63 ± 0.005de

1.64 ± 0.027h

F1

3.16 ± 0.009g

1.81 ± 0.003a

1.74 ± 0.007gh

F2

4.20 ± 0.012de

1.71 ± 0.012b

2.45 ± 0.023de

F3

4.34 ± 0.010bcde

1.51 ± 0.009h

2.88 ± 0.011c

F4

4.59 ± 0.009abcd

1.61 ± 0.012ef

2.85 ± 0.017c

F5

4.69 ± 0.035abc

1.31 ± 0.009i

3.59 ± 0.009b

F6

4.76 ± 0.018 ab

1.32 ± 0.008i

3.61 ± 0.025b

G2

F0

3.04 ± 0.025gh

1.51 ± 0.010h

2.02 ± 0.009fg

F1

3.58 ± 0.021f

1.67 ± 0.009c

2.14 ± 0.006f

F2

4.52 ± 0.003abcde

1.62 ± 0.006de

2.79 ± 0.009c

F3

4.12 ± 0.195e

1.59 ± 0.009f

2.59 ± 0.13cd

F4

4.35 ± 0.006bcde

1.52 ± 0.003gh

2.86 ± 0.009c

F5

4.81 ± 0.007a

1.21 ± 0.003j

3.97 ± 0.015a

F6

4.37 ± 0.472bcde

1.17 ± 0.003k

3.75 ± 0.410ab

G3

F0

3.15 ± 0.312g

1.54 ± 0.009g

2.05 ± 0.184fg

F1

3.71 ± 0.307f

1.71 ± 0.009b

2.17 ± 0.170ef

F2

4.33 ± 0.027bcde

1.64 ± 0.007d

2.64 ± 0.026cd

F3

4.30 ± 0.062cde

1.64 ± 0.006d

2.62 ± 0.045cd

F4

4.31 ± 0.110cde

1.22 ± 0.006j

3.53 ± 0.076b

F5

4.62 ± 0.061abcd

1.16 ± 0.014k

3.97 ± 0.061a

F6

4.73 ± 0.006abc

1.17 ± 0.006k

4.04 ± 0.023a

ANOVA

df

   

Genotypes (G)

2

< 0.001

< 0.001

< 0.001

Fertilizer (F) level

6

< 0.001

< 0.001

< 0.001

G × F

12

< 0.001

< 0.001

< 0.001

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