Non-target woody plant responses to broadcast herbicide treatment for mesquite and pricklypear control

Aerial spraying of herbicides is an option for treating undesirable woody species on grasslands and rangelands, but few studies have determined the effects of these products on non-target woody plants important to wildlife. A recently introduced herbicide containing a mixture of clopyralid and aminopyralid (“CA”) is thought to be specific to honey mesquite (Prosopis glandulosa) control. Our objective was to document the effects of CA alone and mixed with other brush herbicides, including picloram and triclopyr, on two target species, honey mesquite and pricklypear (Opuntia spp.), and two non-target woody plants, lotebush (Zizyphus obtusifolia) and hackberry (Celtis laevigata var reticulata). Treatments were 1) CA, 2) CA + triclopyr (CA+Tr), 3) CA + picloram (CA+Pc), and 4) clopyralid + triclopyr (Cp+Tr). We applied aerial spray treatments on four, 4-ha replicated plots of mature mesquite thickets that also contained pricklypear in each of 3 consecutive years in north-central Texas and e..., , , Title of Dataset: Non-target Woody Plant Responses to Broadcast Herbicide Treatment for Mesquite and Pricklypear Control

## Description of the data and file structure

All data are presented in an Excel file. In addition, there is a pdf of supplemental tables and figures.

In the Excel File labeled 'Data for Table 3':
Column A lists the spray year; this is either 2013, 2014 or 2015.
Column B lists the years post-treatment (YPT); this is either 1 year (1-YPT) or 2 year (2-YPT).
Column C lists the herbicide treatment; these are '1-CA', '2-CA+Tr', '3-CA+Pc', or '4-Cp+Tr'.
Column D lists the treatment replicate; this is either 1, 2, 3, or 4.
Column E lists the study site; this is either '1-Vern' for Vernon, '2-Hamlin' or '3-Baird'.
Column F lists the species evaluated; these are either '1-Mesq' for mesquite, '2-Pear' for pricklypear
'3-Lote' for lotebush, or '4-Hack' for hackberry.
Column G lists percent root-kill (values 0 to 100 %).
Column H lists percent canopy reduction (values 0 to 10...