Published online by Cambridge University Press: 12 June 2017
Good plot sprayers are essential in weed control investigations where chemicals are to be applied uniformly and in specified quantities. Derscheid described such a machine in 1952 and this machine, or similar models, have been used quite widely. The purpose of this paper is to report on a sprayer which was built as an improvement on Derscheid's machine. A number of these modified sprayers have been built at Swift Current and used successfully by other weed workers in Canada.