Integration of Burning with Mechanical Manipulation of South Texas Grassland

Abstract

Roller chopping and shredding of woody plants reduced the overall stature, canopy cover, and woody plant density, but stem density increased due to basal sprouting. Two consecutive years of late summer burns following mechanical treatments did not significantly lower woody plant or stem densities. Mechanical-herbicide stump treatment following mechanical treatment, but prior to burning did not affect woody plant or stem densities or the stem:plant ratio. Mechanical clearing in combination with fire promoted secondary plant succession. Treatment combinations resulted in highest total herbage production, grass production, and herbaceous basal cover. Burning reduced litter cover, while roller chopping and shredding had little effect.