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Influence of Atrazine on Control and Rhizome Carbohydrate Reserves of Quackgrass

Published online by Cambridge University Press:  12 June 2017

Roland Schirman  and
K. P. Buchholtz
Roland Schirman
Affiliation:
Department of Agronomy, University of Wisconsin Crops Research Division, ARS, USDA, Pullman, Washington
K. P. Buchholtz
Affiliation:
University of Wisconsin, Madison
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Abstract

Plots infested with quackgrass (Agropyron repens (L.) Beauv.) were treated with 2-chloro-4-ethylamino-6-isopropyl-s-triazine (atrazine) at several rates at various times and subjected to a number of cultural and cropping treatments. Depletion of carbohydrate reserves in the rhizomes increased with time after treatment. Recovery of the quackgrass occurred after 2 lb/A but usually not after 4 lb/A applications. Applications of nitrogen increased the rate of carbohydrate depletion. Two applications of atrazine at reduced rates were equal or superior to a single heavy rate. Tillage after treatment and crop competition improved the control of quackgrass obtained.

Type
Research Article
Information
Weeds , Volume 14 , Issue 3 , July 1966 , pp. 233 - 236
Copyright
Copyright © 1966 Weed Science Society of America 

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References

Literature Cited

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