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Audible Timer for Hand-Carried Plot Sprayers

Published online by Cambridge University Press:  12 June 2017

D. L. Regehr  and
R. P. Eastburn
D. L. Regehr
Affiliation:
Dep. Plant Sci., and Dep. Agric. Eng., Univ. of Delaware, Newark, DE 19711
R. P. Eastburn
Affiliation:
Dep. Plant Sci., and Dep. Agric. Eng., Univ. of Delaware, Newark, DE 19711
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Abstract

We describe a small, light-weight, battery-powered timer that emits an audible signal at 1-s intervals. This audible timer is used to monitor ground speed when applying chemicals to plots, thereby eliminating the need for manual manipulation of a stop watch.

Keywords

Calibrationplot sprayertimer
Type
Research Article
Information
Weed Science , Volume 28 , Issue 6 , November 1980 , pp. 690 - 691
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

1. Buchholtz, K. P. 1950. A carbon dioxide powered sprayer for small plots. Agron. J. 42:614.CrossRefGoogle Scholar
2. Kerr, H. D. and Robocker, W. C. 1961. A portable compressed-air sprayer for experimental plots. Weeds 9:660–663.CrossRefGoogle Scholar
3. Reis, S. K. and Terry, C. W. 1951. The design and evaluation of a small plot sprayer. Weeds 1:160–173.CrossRefGoogle Scholar