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Effect of Mowing and 2,4-D on Carbohydrate Content and Amount of Ironweed Roots

Published online by Cambridge University Press:  12 June 2017

D. L. Linscott  and
M. K. McCarty
D. L. Linscott
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, University of Nebraska, Lincoln, Nebraska
M. K. McCarty
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, University of Nebraska, Lincoln, Nebraska
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Abstract

Inulin or a closely related analog was the major available carbohydrate component of western ironweed (Vernonia baldwinii Torr.) roots. Fructose, glucose, sucrose and other gluco-fructosans made up the remaining carbohydrate fraction. Reductions in ironweed vigor as a result of annual mowing were caused by a decrease in dry weight of the root system rather than a permanent decrease in carbohydrate percentage. Use of carbohydrate percentage in predicting a physiological condition of ironweed was regarded as questionable. Carbohydrate content of roots was not necessarily related to stage of growth. Treatment of ironweed with 2,4-D did not permanently affect carbohydrate levels in the roots. Changes in root carbohydrate content after 2,4-D treatment were not considered decisive in killing ironweed.

Type
Research Article
Information
Weeds , Volume 10 , Issue 4 , October 1962 , pp. 298 - 303
Copyright
Copyright © 1962 Weed Science Society of America 

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References

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