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Adsorption and transport of pyrithiobac in soils
xiv, 119 leaves : illustrations ; 28 cm.
3.1 to 12.8%, and in the reference adsorbents, from 2.1 to
63.5%. The empirical Freundlich equation adequately described
activity and behavior in soils. This research was undertaken
adsorbents (Gonzales bentonite, Georgia kaolinite, goethite,
adsorbents and the soils using the batch-equilibration
and associated parameters, preferential flow through
and goethite). However, irrespective of calculation method,
and Gonzales bentonite (L-type isotherm), but poorly fit the
and Michigan peat) and four soils (Houston Black c, Hidalgo
broadleaf weed species in cotton. However, there is a
content, cation exchange capacity, and pH into the analyses
curvilinear (S-type) adsorption isotherms which were observed
developed for pyrithiobac adsorption on the reference
did not significantly improve the correlations (W=0.48).
dimethoxypyrimidin-2-ylthio) benzoate), developed by DuPont,
for pyrithiobac was low compared to other herbicides based on
four soils varied on the types and amounts of inorganic and
greatest, followed in order by Gonzales bentonite, Georgia
has shown excellent promise in controlling several obstinate
herbicide pyrithiobac (sodium 2-chloro-6(4,6
in the soils and two reference adsorbents (Georgia kaolinite
indicated that free iron oxide content accounted for 45% of
intact or undisturbed columns. Based on breakthrough-curves
K[] and K[] values. Differences in adsorption capacity of the
kaolinite, goethite, and the soils. The affinity of soils
macropores controlled the movement of pyrithiobac,
organic constituents. Stepwise multiple-regression analyses
particularly in the more structured soils (Ships, Houston
paucity of information available concerning pyrithiobac
physical and chemical properties. Adsorption isotherms were
pyrithiobac adsorption on the Michigan peat (C-type isotherm)
sl, Orelia scl, and Ships sic) having a wide range of
technique. For the soils, pyrithiobac adsorption ranged from
The fate of agrochemicals in soils is governed by various
the retention of pyrithiobac on the Michigan peat was always
the soils. Inclusion of organic carbon content, clay
the variability (p < 0. 000 1) in pyrithiobac adsorption by
to investigate the behavior of pyrithiobac on reference
Transport of pyrithiobac was studied on four soils using
transport, retention, and transformation processes. The
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