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Influence of Oils on the Uptake and Translocation of Methyl 2-Benzimidazolecarbamate in Cotton. A. I. Zaki, Research Associate, University of California, Riverside 92502; D. C. Erwin(2), and Sing-dao Tsai(3). (2)(3)Professor, and Research Associate, respectively, University of California, Riverside 92502. Phytopathology 64:490-493. Accepted for publication 22 October 1973. DOI: 10.1094/Phyto-64-490.

The hydrochloride salt of 14C-methyl 2-benzimidazolecarbamate (14C-MBC-HCl) penetrated the bark of the second internode of cotton plants, translocated upward, and accumulated gradually in the leaf blades. Orchex N795 and Orchex N792 oils at 10 or 20% concn enhanced the uptake of 14C-MBC or 14C-MBC-HCl in cotton. 14C-MBC-HCl was taken up more readily than 14C-MBC. A rapid sensitive method for testing the effect of adjuvants on the uptake and translocation of 14C-MBC or other 14C-labeled fungicides is described.

Additional keywords: systemic fungicides.