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Table 4 Control efficacy of culture broth of strains ND06 and ND10 against rice blast in greenhouse conditions

From: Antagonistic activities of endophytic bacteria isolated from rice roots against the fungus Magnaporthe oryzae, a causal of rice blast disease

Treatments

Incidence rate (%)

Disease index

Control efficacy (%)

ND06

ND10

ND06

ND10

ND06

ND10

T1

–

–

–

–

–

–

T2

92.3a

95.1a

65.2a

66.1a

–

–

T3

77.8b

78.1b

31.2b

32.3b

49.7b

50.1c

T4

39.8c

40.7c

14.8c

15.1c

73.2a

73.9b

T5

32.5d

34.9d

13.7c

12.8d

74.7a

75.6a

  1. T1: A blank solution without fungus (M. oryzae) and endophytic bacteria; T2: A mixture of LB medium only and conidial suspension (5 × 105 conidia/ml) of M. oryzae. added with 0.025% Tween 20; T3: A mixture of the fungicide tricyclazole (750 μg/mL) and conidial suspension added with 0.025% Tween 20; T4: A mixture of culture broth from 3-day-old cultures (10%, v/v) and conidial suspension amended with 0.025% Tween 20; T5: Rice seeds were germinated in the 3-day-old culture broth of selected strains for 24 h. After rising with autoclaved water, the geminated seeds were planted in a pot. The seedlings at the five-leaf stage were sprayed with conidial suspensions. Means ± standard errors within each column, followed by the same letter were non-significantly (P < 0.05) different according to the HSD test