Phenology of Salt Desert Plants near Contour Furrows

Abstract

The phenology of galleta (Hilaria jamesii), shadscale (Atriplex confertifolia), nuttall saltbush (A. nuttallii) and mat saltbush (A. corrugata) was studied to determine the effect of contour furrows on their vigor. Four years following treatment of the areas, the plants within 1 meter of the furrows were larger than control plants at least 3 meters from the treatments. Phenological index scores indicated earlier spring growth for the Atriplex species, and a longer summer and fall growth period for all species near furrows. Seed yields were significantly greater for plants near the furrows, providing a sustained seed source for natural establishment when artificial seedings in the salt desert area fail.