Table 2.

Toxicity of orally administered concentrated culture broths of P. luminescens for newly molted fourth-instarM. sexta larvae

SampleaFold concentrated% MortalitybInitial wt (g) ± SEFinal wt (g) ± SEFold weight gainb
Control (PP3-Tween)00.20 ± 0.012.00 ± 0.1810
Strain Hm1500.22 ± 0.020.63 ± 0.042.8
Strain Hb2500.23 ± 0.010.57 ± 0.132.4
Strain NC-191500.19 ± 0.011.36 ± 0.067.2
Strain W-141000.14 ± 0.010.22 ± 0.041.5
W-14 HPLC toxin (5 μg)300.17 ± 0.010.16 ± 0.010.9
  • a A 50-μl sample was applied to 1 cm2 of insect diet; n = 10 larvae for each sample group.

  • b At 4 days posttreatment.