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Aberrations in Sugarbeet Roots as Induced by Trifluralin

Published online by Cambridge University Press:  12 June 2017

E. E. Schweizer
E. E. Schweizer*
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr. in cooperation with the Botany and Plant Pathology Department, Colorado State University, Fort Collins, Colorado
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Abstract

Sixty percent of the roots of sugarbeets (Beta vulgaris L.) at harvest were aberrant in the zone of the hypocotyledonary neck when 0.84 kg/ha of α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin) was sprayed primarily on the hypocotyledonary tissues of seedlings in the 10 to 12-leaf stage, compared to 7% when soil surrounded most of the hypocotyledonary tissues at the time of application. Trifluralin did not reduce the yield of roots or kilograms of sucrose per hectare in either treatment. Sucrose content and purity were lower, and total nitrogen was more than twice as high in sections of neck and root tissues where the aberrations were the most severe as compared to normal sections of neck and root tissues from the untreated plots. In the greenhouse, trifluralin inhibited the growth of primary and lateral roots in sugarbeet seedlings.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 1 , January 1970 , pp. 131 - 134
Copyright
Copyright © 1970 Weed Science Society of America 

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References

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