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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.