1. Abbreviations: ATV, all-terrain vehicle with four wheels; BAC, broadcast application costs; BHC, broadcast herbicide costs; BTC, total cost of broadcast treatment; DAT, days after treatment; IR, infrared; %VR, percentage spray volume reduction with WAS compared with broadcast applications; WAS, weed-activated sprayer; WASAC, WAS application costs; WASHC, WAS herbicide costs; WASTC, total cost of WAS treatment.
2. Detectspray system;Duff;Abstr. Weed Sci. Soc. Am.,1993
3. Spray Vision, a selective sprayer technology developed in North America;Nelson;Abstr. Weed Sci. Soc. Am.,1993
4. Measuring spectral differences in vegetation canopies by a reflectance ratio meter
5. Spraying Systems Co., P.O. Box 7900, Wheaton, IL 60189.