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Table 2 Effect of different levels N, P and K on yield attributes of stevia under CSIR-IHBT conditions

From: Crop-ecology and nutritional variability influence growth and secondary metabolites of Stevia rebaudiana Bertoni

Treatment

Total branches (No plant −1 )

Leaf area index(LAI)

Specific leaf weight(mg cm −2 )

At 1st harvest

At 2nd harvest

At 1st harvest

At 2nd harvest

Total LAI

At 1st harvest

At 2nd harvest

2010

2011

2010

2011

2010

2011

2010

2011

2010

2011

2010

2011

2010

2011

Nitrogen Level

              

N30

5.29

9.06

18.29

23.5

1.41

1.67

0.22

0.2

1.63

1.88

7.47

7.54

7.64

9.33

N60

6.63

10.97

22.94

26.61

1.71

2.03

0.26

0.24

1.97

2.27

7.46

7.82

11.38

9.25

N90

7.58

11.86

25.34

27.72

1.77

2.12

0.27

0.25

2.04

2.37

7.43

8.39

14.75

9.97

SEm(±)

0.30

0.52

0.83

1.77

0.04

0.04

0.02

0.013

0.05

0.04

0.27

0.67

0.89

0.75

CD(P = 0.05)

0.86

1.50

2.38

NS

0.11

0.12

NS

NS

0.13

0.13

NS

NS

2.56

NS

Phosphorus Level

              

P20

5.97

10.41

21.31

25.54

1.59

1.89

0.24

0.22

1.83

2.1

7.43

7.76

11.06

9.79

P40

7.03

10.85

23.07

26.35

1.68

2.00

0.26

0.24

1.91

2.25

7.59

8.09

11.45

9.24

SEm (±)

0.24

0.43

0.68

1.45

0.03

0.03

0.01

0.011

0.04

0.03

0.22

0.55

0.73

0.62

CD(P = 0.05)

0.70

NS

NS

NS

0.09

10

NS

NS

0.11

0.10

NS

NS

NS

NS

Potassium Level

              

K20

6.4

10.06

20.29

25.28

1.56

1.82

0.22

0.23

1.78

2.05

7.19

7.39

11.13

9.15

K40

6.46

11.53

24.11

26.97

1.61

2.04

0.25

0.24

1.88

2.27

7.81

8.07

12.39

9.72

K60

6.64

10.31

22.18

25.58

1.73

1.98

0.27

0.22

1.99

2.02

7.36

8.3

10.25

9.68

SEm (±)

0.30

0.52

0.83

1.77

0.04

0.04

0.02

0.013

0.05

0.04

0.27

0.67

0.89

0.75

CD(P = 0.05)

NS

NS

2.38

NS

0.11

0.12

NS

NS

0.13

0.13

NS

NS

NS

NS

Interaction effect

              

CD of N × P

NS

NS

NS

NS

NS

NS

NS

NS

NS

0.18

NS

NS

NS

NS

CD of N × K

NS

NS

2.35

NS

NS

NS

NS

NS

NS

0.22

NS

NS

NS

NS

CD of P × K

NS

NS

NS

NS

NS

NS

0.06

NS

NS

NS

NS

NS

3.61

NS

CD of N × P × K

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

  1. N1, N2 and N3 are the level of nitrogen @ 30, 60 and 90 kg ha−1, respectively. P1 and P2 are the level of phosphorus (P2O5) @ 20 and 40 kg ha−1, respectively, while K1, K2 and K3 are representing the level of potassium (K2O) @ 20, 40 and 60 kg ha−1, respectively.