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A Method for Assessing Herbicide Performance in Small Plot Experiments

Published online by Cambridge University Press:  12 June 2017

A.S. Hamill ,
P.B. Marriage  and
G. Friesen
A.S. Hamill
Affiliation:
Agriculture Canada, Research Station, Harrow, Ontario, NOR 1GO
P.B. Marriage
Affiliation:
Agriculture Canada, Research Station, Harrow, Ontario, NOR 1GO
G. Friesen
Affiliation:
Agriculture Canada, Research Station, Harrow, Ontario, NOR 1GO
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Abstract

A method is described that provides an accurate and useful assessment of herbicide performance in small plot experiments. This method is an extension of previous rating systems and provides an assessment of the control of individual species through an estimation of the percentage that each contributes to the total broadleaf or grass weed cover on the whole plot area. It permits data collection on individual weed species but is less time-consuming than counting individual plants and it takes into account the size and vigor of individual weed plants as well as their relative abundance. Further, the system allows tabulation of data from across the entire plot rather than from small areas within the plot. The data can be readily entered into various computerized retrieval systems.

Information

Type
Research Article
Information
Weed Science , Volume 25 , Issue 5 , September 1977 , pp. 386 - 389
Copyright
Copyright © 1977 by the Weed Science Society of America 

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References

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