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Table 1 IAA production (µg/ml) at different concentrations of chicken feathers by the strain PF1

From: Ameliorating effects of chicken feathers in plant growth promotion activity by a keratinolytic strain of Bacillus subtilis PF1

Hours Control 0.25 % 0.50 % 0.75 % 1.0 % 1.5 % 2.0 %
24 8.9 ± 0.7 2.77 ± 0.06 4.75 ± 0.37 6.87 ± 0.66 12.64 ± 1.21* 14.56 ± 1.39* 16.05 ± 2.62*
48 16.8 ± 1.9 3.33 ± 0.39 7.20 ± 0.55 9.19 ± 0.73 17.5 ± 1.17 27.51 ± 1.28* 28.96 ± 2.98*
72 25.76 ± 2.4 3.90 ± 0.15 10.26 ± 0.21 11.85 ± 0.57 22.44 ± 0.96 38.50 ± 2.09* 40.08 ± 3.2*
96 24.6 ± 2.0 4.30 ± 0.55 12.73 ± 0.45 16.46 ± 0.57 27.00 ± 0.84 43.25 ± 2.21* 43.98 ± 2.14*
120 22.1 ± 1.4 5.46 ± 0.47 15.09 ± 0.80 19.94 ± 0.78 33.66 ± 1.0* 45.37 ± 2.11* 46.2 ± 0.21 *
  1. The experiments were performed in triplicate and individual values are depicted as mean ± standard deviation
  2. * Denotes a value significantly greater than the control value (p < 0.05)