Long-Term Survival of 20 Selected Plant Accessions in a Rush Valley, Utah, Planting.

摘要

Fifty-two plants each of 20 plant accessions were transplanted onto a salt-desert shrub site in Rush Valley, UT. Nine of the 20 kinds of plants; five accessions (four species) of Atriplex, two varieties of Kochia prostrata, Sarcobatus vermiculatus, and one species of Yucca, showed generally good survival (>60 percent) through the first 6 years following planting. Only K. prostrata and S. vermiculatus showed good survival for the full 12-year period. Large grasshopper populations, a high water table, and other factors likely contributed to shrub mortality during the 1984-89 period. By 1989, seedlings of both varieties of K. prostrata had spread throughout the exclosure, up to 5 meters from the original planting area. No plants were observed beyond the disked fire line surrounding the exclosure.