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Growth and Development of Dinitroaniline-Susceptible and -Resistant Goosegrass (Eleusine indica) Biotypes Under Noncompetitive Conditions

Published online by Cambridge University Press:  12 June 2017

Tim R. Murphy ,
Billy J. Gossett  and
Joe E. Toler
Tim R. Murphy
Affiliation:
Agron. Dep., Clemson Univ., Clemson, SC, 29631
Billy J. Gossett
Affiliation:
Agron. Dep., Clemson Univ., Clemson, SC, 29631
Joe E. Toler
Affiliation:
Exp. Statistics Unit, Clemson Univ., Clemson, SC, 29631
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Abstract

A comparative study of the growth and development of several populations of dinitroaniline-susceptible (DS) and -resistant (DR) goosegrass [Eleusine indica (L.) Gaertn. # ELEIN] biotypes was conducted under noncompetitive field conditions. Plant height and width, number of tillers, aboveground dry weight, relative growth rate (RGR), number of inflorescences/plant, total inflorescence dry weight, individual inflorescence dry weight, number of spicate branches/inflorescence, and flag leaf length and width were recorded periodically during the growing season. There were no significant differences between biotypes in most characteristics with the exception of total inflorescence dry weight. The DS biotype produced more total inflorescence dry weight than the DR biotype at 8 and 13 weeks after transplanting. Significant variation among DS and DR populations occurred in 37 and 33 of 56 evaluations, respectively. When variation existed within a biotype, populations exhibited broad ranges of response for the various growth parameters. With the exception of total inflorescence dry weight, DS and DR biotypes generally exhibited similar ranges of variability.

Keywords

Weed biotypesherbicide resistancetrifluralinELEIN
Type
Weed Biology and Ecology
Information
Weed Science , Volume 34 , Issue 5 , September 1986 , pp. 704 - 710
Copyright
Copyright © 1986 by the Weed Science Society of America 

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References

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