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Growth and Development of Three Johnsongrass Selections

Published online by Cambridge University Press:  12 June 2017

I. M. Wedderspoon  and
G. W. Burt
I. M. Wedderspoon
Affiliation:
Development and Service Representative, E.I. du Pont de Nemours & Co., Inc., Biochemicals Dep., Wilmington, DE 19898. Dep. of Agron., Univ. of Maryland, College Park, MD. 20742
G. W. Burt
Affiliation:
Dep. of Agron., Univ. of Maryland, College Park, MD 20742
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Abstract

Three selections of johnsongrass (Sorghum halepense (L.) Pers.) were collected from three locations and designated as the N, NS, and S selections, respectively. The selections were studied for growth differences and for a differential response to dalapon (2,2-dichloropropionic acid). The N selection control plants flowered 2 weeks earlier than the other selections. The S selection yielded significantly greater root, rhizome, and total fresh weight than the NS and N selections. The N selection exhibited the most susceptibility to dalapon by producing the shortest plants, the least stem and leaf numbers, and the lowest shoot, root, rhizome, and total fresh weight of the three selections.

Type
Research Article
Information
Weed Science , Volume 22 , Issue 4 , July 1974 , pp. 319 - 322
Copyright
Copyright © 1974 by the Weed Science Society of America 

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References

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