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@ARTICLE{Leal:860972,
author = {Leal, Daniela Piaz Barbosa and Dick, Deborah Pinheiro and
Stahl, Anna Meike and Köppchen, Stephan and Burauel, Peter},
title = {{A}trazine degradation patterns: the role of straw cover
and herbicide application history},
journal = {Scientia agricola},
volume = {76},
number = {1},
issn = {1678-992X},
address = {Piracicaba},
reportid = {FZJ-2019-01605},
pages = {63 - 71},
year = {2019},
abstract = {In Brazil, atrazine (ATZ) is widely applied to maize (Zea
mays L.) fields for weed control. The presence of ATZ and
its metabolites in soil and water matrices has become a
matter of some concern for governmental authorities as well
as for society at large. This study evaluated the patterns
of ATZ degradation (mineralization, extractable and
non-extractable ATZ residues, and metabolite formation) in a
Brazilian Typic Paleudult. Soil samples from a cultivated
area under a no-tillage system with a history of ATZ
application were incubated with 14C-ATZ in both the presence
and absence of straw cover on the soil surface, and the
evolved 14CO2 was determined by liquid scintillation.
Samples from an area with native vegetation, adjacent to the
cultivated area, were also incubated as a control. A higher
mineralization of ATZ was observed in the cultivated soil (>
85 $\%)$ in comparison with the native soil (10 $\%)$ after
85 days of incubation. In addition to the higher
mineralization and hydroxyatrazine (HA) formation, a rapid
decrease in the water-extractable residues was observed in
the cultivated soil. When the cultivated soil was covered
with straw, mineralization was reduced by up to 30 $\%$
although a small amount of remobilization to the soil
occurred within the 85 days. Straw cover hindered the
degradation of ATZ in cultivated soils; whereas an
accelerated biodegradation was due to repeated applications
of ATZ, which may have selected microbiota more skilled at
biodegrading the herbicide.},
cin = {IBG-3},
ddc = {640},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000446980300009},
doi = {10.1590/1678-992x-2017-0230},
url = {https://juser.fz-juelich.de/record/860972},
}