Botanical extracts Concentration (%) Color Size No of septa Shape of conidia
Conidiophore Conidia Length (μ) Width (μ) Conidiophore Conidia
Conidiophore Conidia Conidiophore Conidia
E. essential oil 0.5% Light  brown Olivaceous Brown  70-187 40-70 6-8 20-30 2-9 2-7 Oval with round ends
1% Light  brown Brown to olivaceous 66-188 36-80 5-8 15-32 2-9 2-6 Oval with round ends
2.5% Light  brown Oivaceous Brown  62-161 30-60 6-8 15-23 4-8 1-6 Oval with round ends
5% Light  brown Oivaceous to dark brown 57-164 30-60 6-8 17-30 4-8 2-5 Oval with round ends
7.5% Light  brown Oivaceous brown 50-130 20-32 5-7.3 11-19 2-7 2-5 Oval to elliptical
10% Light  brown Olivaceous Brown  50-128 20-30 4-8 10-20 2-7 1-5 oval
15% Light  brown Oivaceous Brown 55-166 50-70 4-7 20-22 1-6 1-4 Nearly round
50% Light  brown Oivaceous Brown 46-149 18-55 4-6 10-21 1-5 1-4 Oval to Nearly round
100% - - - - - - - - -
Control Water Light  brown Dark brown 81.36-193.21 50-90 6-8 20-30 4-9 2-7 Oval to elliptical
Tween 20 Light  brown Oivaceous Brown  70.2-190 40-90 6-8 20-30 2-9 2-6 Oval with round ends
DMSO Light  brown Oivaceous Brown  74-190 40-90 6-8.5 20-30 2-9 2-6 Oval to elliptical
Table 2: Conidia characters of Bipolaris sorokiniana subjected to different concentrations of the essential oils of Eucalyptus camaldulensis Dehn.