Land Retirement Demonstration Project

THE ATRIPLEX SPINIFERA PLANTING

Overview

In this trial, an evaluation was made of the success of Atriplex spinifera (spiny saltbush) when planted in various groupings. Atriplex spinifera is an important component of the Central Valley's native habitats. This species was also of interest because of it's ability to become established in habitats dominated by red brome (Bromus madritensis).

Atriplex spinifera transplants were grown-out from cuttings taken from shrubs on Section 10. A local nursery with extensive experience working with California native plants (Intermountain Nursery, Auberry, California; Ray LeClerge, owner) was contracted to undertake the propagation and grow-out. Plants were maintained in approximately gallon-sized peat pots until transplanting (Figure 1), and were watered as deemed appropriate (approximately bi-weekly) while in the nursery. Two treatment effects were investigated: 1) planting density, and 2) plant spacing. Shrubs were transplanted in groups (shrub islands) of four different configurations. All plants were watered at the time of transplanting. Additional watering occurred weekly until the site received soil-soaking rains (late December 2001). The condition of each plant was monitored in April, July, and December 2002, May 2003, and January 2004.

Page created: March 1, 2005; Last updated: Dec. 20, 2005