Droplet size and spray volume effects on honey mesquite mortality with clopyralid
Issue Date
1993-05-01Keywords
droplet sizelow volume spraying
droplet studies
high volume spraying
clopyralid
Prosopis glandulosa
brush control
phytotoxicity
chemical control
Metadata
Show full item recordCitation
Whisenant, S. G., Bouse, L. F., Crane, R. A., & Bovey, R. W. (1993). Droplet size and spray volume effects on honey mesquite mortality with clopyralid. Journal of Range Management, 46(3), 257-261.Publisher
Society for Range ManagementJournal
Journal of Range ManagementDOI
10.2307/4002618Additional Links
https://rangelands.org/Abstract
The effects of droplet size and spray volume (spray-mixture application rate) on honey mesquite (Prosopis glandulosa Torr.) mortality were evaluated using 0.55 to 0.58 kg ae (acid equivalent) ha-1 clopyralid (3,6 dichloro-2-pyridinecarboxylic acid). A factorial combination of 3 spray volumes (19, 37, and 75 liters ha-1) and droplet sizes of 325 +/- 25, 475 +/- 25, and 625 +/- 25 micrometers nominal volume median diameter were replicated 3 times at both Andrews and Big Lake, Tex., during June 1989. The experiment was repeated in 1990 at Big Lake and Campbellton, Tex., without the 75 liters ha-1 spray volume. Honey mesquite mortality and canopy reduction 16 months after application were significantly less on the 625 micrometer droplet treatments in 2 of 4 experiments, when compared to plots treated with smaller droplet sizes. Mortality increased with larger spray volumes, particularly with 625 micrometer droplets. Relative mortality data from the 4 experiments clearly demonstrated that larger droplet sizes require larger spray volumes for greatest efficacy.Type
textArticle
Language
enISSN
0022-409Xae974a485f413a2113503eed53cd6c53
10.2307/4002618