Residual Effects of Diuron [3-(3,4-Dichlorophenyl)-1,1-Dimethylurea] on the Sugar Content and Sugar-Metabolizing Enzymes of Ratoon Sugarcane 25 Months Following Different Soil Treatment
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Alexander, A. G., & González Ibáñez, J. (1964). Residual Effects of Diuron [3-(3,4-Dichlorophenyl)-1,1-Dimethylurea] on the Sugar Content and Sugar-Metabolizing Enzymes of Ratoon Sugarcane 25 Months Following Different Soil Treatment. The Journal of Agriculture of the University of Puerto Rico, 48(4), 284–303. https://doi.org/10.46429/jaupr.v48i4.12997

Abstract

A series of sugar and enzyme analyses were conducted with 5- to 6-month-old ratoon sugarcane to study the residual effects of Diuron upon certain sugar metabolizing systems. The cane represented the first ratoon crop growing on a Mabí clay soil treated 25 months previously with the equivalent of 2, 4, and 8 pounds per acre of Diuron. Total leaf ketoses and sucrose were significantly suppressed by 4 and 8 pounds per acre Diuron. Sheath sugars and percentage of sucrose of the juice and cane were only slightly affected by the herbicide. The activity of a number of critical enzymes was significantly altered by Diuron. These included maltase, hexokinase, glucose-6-phosphatase, fructose-6-phosphatase, glucose oxidase, transaminase, l-amino acid oxidase, and catalase. The nature of these variations and their possible consequences to the cane physiology are discussed in detail.
https://doi.org/10.46429/jaupr.v48i4.12997
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