Wt. Molin et al., COMPARATIVE RATES OF SAFENER AND ACETANILIDE MOVEMENT IN 2 SOIL TYPESUNDER LABORATORY CONDITIONS, Acta phytopathologica et entomologica Hungarica, 28(2-4), 1993, pp. 499-502
The relative mobility of two thiazolecarboxylic acid safeners and alac
hlor was examined in columns of two loam soils under laboratory condit
ions to determine the potential of the thiazolecarboxylates as tank mi
x safeners. Test compounds were leached through 6.4 cm x 6.0 mm column
s of either Muscatine loam or Dupo silt loam soil with 20 ml of water.
Column effluent was collected using a fraction collector and quantita
tion performed via HPLC. Flurazole, a seed applied safener, did not el
ute from either of the two soil types tested. The parent acid 2-chloro
-4-(trifluoro-methyl)-5-thiazolecarboxylic acid) of flurazole eluted w
ith the void volume well in advance of alachlor. Data suggest that und
erstanding the physical properties of safeners relative to their soil
mobility is essential in predicting their efficacy as tank mixture or
seed treatment safeners.