GRASS ROOT PENETRATION IN IOSCO II PROCESSED OIL SHALE

David L. Buckner
1985 Journal American Society of Mining and Reclamation  
Root penetration of several grass species was studied on TOSCO II processed oil shale in the Colony Shale Oil plots in Garfield County, Colorado. Substrate treatments examined included bare processed shale, six inches of soil over processed shale, 24 inches of soil over processed shale, and soil control. Species examined included Agropyron desertorum, Agropyron elongatum, Agropyron sm1th11, Agropyron ripar,um, Elymus Junceus, and Sporobolus a1ro1des. Results showed that roots had penetrated
more » ... had penetrated processed shale to the depths normal for grass roots. However, roots in processed shale were usually fewer in number but thicker so that biomass was equal to or greater than that of the same species, at the same depth, in the soil control. In the 6-inch soil over processed shale treatment, the roots in the uppermost processed shale (immediately beneath the soil) were the most numerous observed in any processed shale.
doi:10.21000/jasmr85010173 fatcat:xtvmymfvk5czljvpdbhb4dpcv4