Relative amount (%)

VOCs

Maize headspace

Maize field atmosphere

classes

Day (n = 4)

Dusk (n = 4)

Night (n = 4)

Dawn (n = 4)

Kruskal-Wallis

Day (n = 2)

Dusk (n = 3)

Night (n = 4)

Dawn (n = 3)

Kruskal-Wallis

Mean ± SE

Mean ± SE

Mean ± SE

Mean ± SE

Chi²

p-value

Mean ± SE

Mean ± SE

Mean ± SE

Mean ± SE

Chi²

p-value

GLV

34.74 ± 9.18

34.04 ± 2.36

28.28 ± 8.66

43.27 ± 7.52

1.522

0.677

41.57 ± 26.68

30.10 ± 7.46

25.33 ± 8.73

34.35 ± 6.24

0.737

0.864

MT

15.91 ± 11.07

12.57 ± 7.24

40.09 ± 13.94

40.40 ± 9.06

5.374

0.146

55.07 ± 23.80

62.78 ± 4.12

56.41 ± 4.21

60.34 ± 3.89

0.853

0.837

HT

3.06 ± 2.15

1.17 ± 0.12

0.92 ± 0.50

0.01 ± 0.02

5.727

0.126

3.34 ± 2.88

0.81 ± 0.68

1.87 ± 1.00

1.77 ± 1.16

1.768

0.622

SQT

46.27 ± 18.20

52.20 ± 7.29

30.69 ± 9.68

16.29 ± 7.02

5.749

0.124

0.00 ± 0.00

6.29 ± 6.29

16.37 ± 10.11

3.51 ± 3.51

1.942

0.584