Table 3 Average number of new lateral roots per treated root of fall dug red oak (150 cm), held in cold storage until January and treated.
TreatmentRoot number
Control3.5 b
IBA (3,000 ppm)10.0 a
IBA (1,500 ppm) + B-naphtol (5 × 10–4M)4.5 b
IBA (1,500 ppm) + phloroglucinol (5 × 10–4M)10.0 a
  • Mean separation by Duncan’s multiple range test, 5% level.