Greenhouse Evaluation of Reclamation Treatments for Perlite-Pumice Mine Spoils

摘要

Thickspike wheatgrass and Hycrest wheatgrass were grown in perlite ore, pumice ore, and perlite mill waste from a mine in southeastern Idaho. Results show that fertilization is necessary for grass establishment and that increasing fertilizer significantly (p 0.05) increases aboveground biomass (up to 45-fold), belowground biomass (up to twentyfold), number of culms (ninefold), and average leaf length (up to 80 percent) over no fertilizer. Mulch equal to 2,200 kg/ha (2,000 lb/acre) significantly reduced all plant growth parameters.