Using Mulch and Compost for Rangeland Restoration

Researchers from the University of Arizona tested the ability of branch mulch and compost from mesquite removal projects to reestablish vegetation and improve soil health in the Altar Valley of Southern Arizona over the course of two years. Recycling whole mesquite branch mulch eliminates the need for tillage and reduces costs. Researchers found that branch mulch with 3 cm of compost led to the largest increases in grass cover during the wetter conditions, whereas branch mulch alone produced highest forb establishment in drier conditions. All treatments led to decreased soil temperatures and increased soil water availability, however no significant improvements on soil health were documented.