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Table 4 Minimum inhibitory (MIC) and bactericidal concentration (MBC) of the methanolic extract (mg/mL) of Calibrachoa cultivars contents following SWE foliar (Fol) and Drench (Dre) treatments with 5 or 7 mL/plant. Values are expressed as mean of triplicate determinations ± sd

From: Enhancement of Calibrachoa growth, secondary metabolites and bioactivity using seaweed extracts

 

SWE treatments

Bacillus cereus

Staphylococcus aureus

Micrococcus flavus

Enterobacter cloacae

CHSD

MIC

Streptomycin

0.08 ± 0.004b

0.20 ± 0.01a

0.11 ± 0.01c

0.06 ± 0.001e

Ampicillin

0.08 ± 0.003b

0.11 ± 0.01e

0.10 ± 0.02 cd

0.15 ± 0.03ab

CONTROL

0.10 ± 0.001a

0.18 ± 0.002b

0.18 ± 0.001a

0.17 ± 0.002a

(5 ml) Fol

0.09 ± 0.003ab

0.17 ± 0.007bc

0.17 ± 0.002ab

0.16 ± 0.001a

(7 ml)Fol

0.08 ± 0.002b

0.16 ± 0.005c

0.15 ± 0.005b

0.14 ± 0.001b

(5 ml)Dre

0.07 ± 0.001bc

0.14 ± 0.005d

0.12 ± 0.004c

0.10 ± 0.004c

(7 ml)Dre

0.065 ± 0.003c

0.1 ± 0.02e

0.08 ± 0.002d

0.08 ± 0.002d

MBC

Streptomycin

0.11 ± 0.002de

0.40 ± 0.003a

0.21 ± 0.01c

0.10 ± 0.03d

Ampicillin

0.19 ± 0.003a

0.17 ± 0.002 g

0.20 ± 0.01c

0.21 ± 0.002c

CONTROL

0.17 ± 0.005b

0.30 ± 0.001b

0.30 ± 0.001a

0.32 ± 0.001a

(5 ml) Fol

0.15 ± 0.001c

0.28 ± 0.003c

0.28 ± 0.004ab

0.31 ± 0.005a

(7 ml)Fol

0.14 ± 0.004c

0.26 ± 0.004d

0.25 ± 0.001b

0.27 ± 0.004b

(5 ml)Dre

0.12 ± 0.005d

0.23 ± 0.005e

0.22 ± 0.002c

0.22 ± 0.003c

(7 ml)Dre

0.10 ± 0.002e

0.21 ± 0.001f

0.16 ± 0.005d

0.19 ± 0.001c

CHSF

MIC

Streptomycin

0.08 ± 0.004c

0.20 ± 0.01c

0.11 ± 0.01e

0.06 ± 0.001e

Ampicillin

0.08 ± 0.003c

0.11 ± 0.01e

0.10 ± 0.02e

0.15 ± 0.003d

CONTROL

0.14 ± 0.001a

0.26 ± 0.004a

0.25 ± 0.001a

0.28 ± 0.001a

(5 ml) Fol

0.13 ± 0.002a

0.23 ± 0.005b

0.22 ± 0.002b

0.25 ± 0.005b

(7 ml)Fol

0.11 ± 0.000b

0.19 ± 0.001c

0.19 ± 0.001c

0.22 ± 0.004c

(5 ml)Dre

0.10 ± 0.002b

0.17 ± 0.001 cd

0.18 ± 0.005 cd

0.20 ± 0.002c

(7 ml)Dre

0.08 ± 0.005c

0.15 ± 0.002d

0.15 ± 0.001d

0.16 ± 0.001d

MBC

Streptomycin

0.11 ± 0.002f

0.40 ± 0.003b

0.21 ± 0.01d

0.10 ± 0.03e

Ampicillin

0.19 ± 0.003d

0.17 ± 0.002e

0.20 ± 0.01d

0.21 ± 0.002d

CONTROL

0.31 ± 0.001a

0.45 ± 0.002a

0.47 ± 0.002a

0.45 ± 0.001a

(5 ml) Fol

0.27 ± 0.002b

0.40 ± 0.001b

0.44 ± 0.001a

0.43 ± 0.002a

(7 ml)Fol

0.24 ± 0.001c

0.38 ± 0.001b

0.39 ± 0.006b

0.37 ± 0.005b

(5 ml)Dre

0.19 ± 0.002d

0.32 ± 0.002c

0.33 ± 0.001c

0.34 ± 0.001b

(7 ml)Dre

0.16 ± 0.003e

0.29 ± 0.001d

0.30 ± 0.003c

0.28 ± 0.002c

  1. Notes: CHSD C. h. ʻ Superbells® Dreamsicleʼ, CHSF C. h. ʻSuperbells® Frost Fireʼ, Dre Drench treatment, Fol Foliar treatment
  2. *Means followed by different letters within a column indicate significant differences between treatments based on LSD test (P ≤ 0.05)