Dicamba (Dimethylamine 2-methoxy-3,6-dichlorobenzoate) 
Dicamba moved readily in soil-water, suggesting limited adsorption 
(Friesen, 1965). 
Recent studies indicated that dicamba inhibited pantothenate synthesis 
at the level of conversion of ketopantoate to pantoate (Hilton, 1965). 
ie 
CH,-C - C-cOoO™ 
Ie tl 
CH, 0 
ketopantoate 
“ URE nant. DICAMBA 
CH, (BENZOIC ACIDS) 
CH,-G - CH-COO~ 
OH CH, OH 
pantoate 
Dichlobenil (2,6-Dichlorobenzonitrile) 
Exposure to labeled dichlobenil showed that this compound can be 
absorbed from the atmosphere as well as from an aqueous solution. Studies 
with bean seedlings (Phaseolus vulgaris L.) gave evidence of metabolism of 
dichlobenil (Massini, 1961; Pate et al., 1964). Alligatorweed [Alternanthera 
philoxeroides (Mart.) (Griseb.)], bean (Phaseolus vulgaris L.}), fungi 
(Fusurium sp., Geotrichum sp., Penicillium sp., and Trichoderma sp.) and a 
nematode (Rhabditis sp.) were used to study dichlobenil metabolism. From 
water extracts, 2,6-dichlorobenzoic acid was isolated and identified 
(Pate and Funderburk, 1965). 
87 
