Skip to main content Accessibility help

Differential Absorption and Distribution as a Basis for the Selectivity of Bifenox

  • G. R. Leather (a1) and C. L. Foy (a1)


The uptake and distribution of 14C-bifenox [methyl 5-(2,4-dichlorophenoxy)-2-nitrobenzoate] was different among corn (Zea mays L.), soybean (Glycine max (L.) Merr.) and velvetleaf (Abutilon theophrasti Medic.) following preemergence application to a greenhouse soil mix. Autoradiographs of seedlings harvested 14 days after treatment, showed the 14C to be in (or on) those areas of the crop plant in contact with the treated soil. Velvetleaf translocated 14C residue throughout the shoot. Absorption of 14C-compound(s) from treated nutrient solution accumulated in the roots of the three species but to a greater extent in soybean. There was no difference in the concentration of 14C in the shoots. However, in corn and soybean the 14C-compound(s) was confined to the primary and secondary leaf veins while velvetleaf showed a general distribution throughout the leaf tissue. Velvetleaf absorbed and translocated bifenox from shoot zones to a greater extent than the crop plants. Some acropetal movement was noted following leaf application to corn and velvetleaf but movement was only 3% of applied 14C from the treated leaf. No movement was detected in soybean.



Hide All
1. Andersen, R. N. 1971. Postemergence chloroxuron treatments on soybeans. Weed Sci. 19:219222.
2. Appleby, A. P. and Furtick, W. R. 1965. A technique for controlled exposure of emerging grass seedlings to soil-active herbicides. Weeds 13:172173.
3. Baldwin, F. L. and Frans, R. E. 1972. Soybean and weed response to dinoseb and chloroxuron applied topically. Weed Sci. 20:511514.
4. Crafts, A. S. and Yamaguchi, S. 1964. The autoradiography of plant materials. Calif. Agric. Exp. Stn. Serv. Manual 35. 143 pp.
5. Eastin, E. F. 1971. Movement and fate of fluorodifen-1-14C in cucumber seedlings. Weed Res. 11:6368.
6. Eastin, E. F. 1971. Degradation of fluorodifen-1-14C by peanut seedling roots. Weed Res. 11:120123.
7. Eastin, E. F. 1972. Fate of fluorodifen in susceptible cucumber seedlings. Weed Sci. 20:255260.
8. Feeny, R. W., Parochetti, J. V., and Colby, S. R. 1974. Selective action of chloroxuron on soybean and tall morningglory. Weed Sci. 22:143150.
9. Hawton, D. and Stobbe, E. H. 1971. The fate of nitrofen in rape, redroot, pigweed, and green foxtail. Weed Sci. 19:555558.
10. Hoagland, D. R. and Arnon, D. I. 1950. The water-culture method for growing plants without soil. Calif. Agric. Exp. Stn. Manual 347 (rev. ed.) 32 pp.
11. Johnson, B. J. 1970. Effects of nitralin and chloroxuron combination on weeds and soybeans. Weed Sci. 18:616618.
12. Knake, E. L. and Wax, L. M. 1968. The importance of the shoot of giant foxtail for the uptake of preemergence herbicides. Weed Sci. 16:393395.
13. Parker, C. 1966. The importance of shoot entry in the action of herbicides applied to the soil. Weeds 14:117121.
14. Parochetti, J. V., Feeny, R. W., and Colby, S. R. 1972. Preemergence herbicides plus postemergence chloroxuron on soybeans. Weed Sci. 20:548553.
15. Peterson, J. I. 1969. A carbon dioxide collection accessory for the rapid combustion apparatus for preparation of biological samples for liquid scintillation analysis. Anal. Biochem. 31:189201.
16. Prendeville, G. N., Oliver, L. R., and Schreiber, M. M. 1965. Species differences in site of shoot uptake and tolerance to EPTC. Weed Sci. 16:534537.
17. Rogers, R. L. 1971. Absorption, translocation and metabolism of p-nitrophenyl α,α,α-trifluoro-2-nitro-p-tolyl ether by soybeans. J. Agric. Food Chem. 19:3235.
18. Walter, J. P., Eastin, E. F., and Merckle, M. G. 1970. The persistence and movement of fluorodifen in soils and plants. Weed Res. 10:165171.

Differential Absorption and Distribution as a Basis for the Selectivity of Bifenox

  • G. R. Leather (a1) and C. L. Foy (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed