| Treatment* | Average number of infected plants with S rolfsii, 28 days after planting** |
| T1―Seeds not treated and the soil not infested with S. rolfsii | 0.00 c |
| T2―Seeds not treated and the soil infested with S. rolfsii, before planting | 50.95 a |
| T3―Seeds treated with shale water (5%) and the soil infested with S. rolfsii, before planting | 7.81 b |