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Differential Tolerance of Hawaiian Sugarcane Cultivars to Diuron

Published online by Cambridge University Press:  12 June 2017

R. V. Osgood ,
R. R. Romanowski  and
H. W. Hilton
R. V. Osgood
Affiliation:
Dep. of Chem. and Weed Control, Exp. Sta., Hawaiian Sugar Planters' Assoc, Honolulu, Hawaii 96822
R. R. Romanowski
Affiliation:
Dep. of Hort., Purdue Univ., Lafayette, Indiana 47907
H. W. Hilton
Affiliation:
Dep. of Chem. and Weed Control, Exp. Sta., Hawaiian Sugar Planters' Assoc, Honolulu, Hawaii 96822
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Abstract

Hawaiian sugarcane cultivars (Saccharum L. hybrids) differed considerably in their tolerance to 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron). There was a greater concentration of diuron in the younger leaves of a sensitive cultivar, ‘H 53–263,’ compared with a tolerant cultivar, ‘H 50–7209′; degradation of diuron was more extensive in ‘H 50–7209′. The metabolites identified after applications of carbonyl-labeled diuron to the root system were 1-(3,4-dichlorophenyl)-3-methylurea (monomethyl-diuron) and 1-(3,4-dichlorophenyl)urea (demethylated diuron). Differences in diuron phytotoxicity to cultivars ‘H 53–263’ and ‘H 50–7209’ are at least partially explained by differences in the distribution and degradation of diuron.

Type
Research Article
Information
Weed Science , Volume 20 , Issue 6 , November 1972 , pp. 537 - 539
Copyright
Copyright © 1972 Weed Science Society of America 

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References

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