Table 1: Texture and organic matter contents of the soil used in a study to determine the effect of ozone on P. sojae.
| Total C (%) | OM (%) | % Sand | % Coarse silt | % Fine silt | % Clay |
|---|---|---|---|---|---|
| 1 | 1.4 | 79.0 | 4.9 | 5 | 10 |
Note: The analysis of soils hows that the soil used in the current research is sandy a texture, constituted in 4/5 of sand, with a low organic matter (< 2%) and organic carbon (0.73%) content