Table 3 Effect of irrigation system and α-tocopherol foliar spray on photosynthetic pigments, indole acetic acid (IAA) and phenol contents of leaves and shoots of sweet corn plant grown under sandy soil conditions

Irrigation system

Sprinkler

0.83

0.42

0.26

1.51

26.88

52.14

Dripping

1.12

0.49

0.31

1.92

33.96

60.4

L.S.D at 5%

0.14

0.01

0.01

0.03

0.94

0.83

α-Tocopherol concentration

Control

0.72

0.40

0.25

1.37

25.02

51.13

100 mg/L

1.01

0.46

0.28

1.75

30.52

56.04

200 mg/L

1.20

0.51

0.33

2.04

35.71

61.64

L.S.D at 5%

0.12

0.01

0.007

0.015

0.49

0.44

Interaction

Sprinkler

 Control

0.69

0.37

0.23

1.29

21.24

48.32

 100 mg/L

0.84

0.42

0.26

1.52

27.09

51.98

 200 mg/L

0.96

0.47

0.29

1.72

32.3

56.11

Dripping

 Control

0.75

0.43

0.27

1.45

28.81

53.94

 100 mg/L

1.17

0.50

0.30

1.97

33.95

60.09

 200 mg/L

1.44

0.54

0.36

2.34

39.11

67.16

 L.S.D at 5%

0.164

0.014

0.001

0.11

0.69

0.62