| Strain | 8 dS∙m−1 | 10 dS∙m−1 | 12 dS∙m−1 |
| Control | 38 e | 30 f | 30 f |
| KS 8 | 48 bc | 50 b | 60 a |
| KS 28 | 45 d | 47 cd | 48 bc |
| KS mix | 40 e | 40 e | 46 cd |