Seedling Performance Associated with Live or Herbicide Treated Tall Fescue

Figure 1

The soil-on-agar assay: a thin layer of field-moist soil is uniformly distributed on top of solidified water agar (5 g kg⁻¹ agar in distilled water) in a rectangular, clear-plastic flask. Seeds are planted and covered with a layer of soil. Initial root or shoot growth can be monitored and plants can be maintained for other measurements.