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@ARTICLE{Braun:864350,
author = {Braun, G. and Braun, M. and Kruse, J. and Amelung, W. and
Renaud, F. G. and Khoi, C. M. and Duong, M. V. and
Sebesvari, Z.},
title = {{P}esticides and antibiotics in permanent rice, alternating
rice-shrimp and permanent shrimp systems of the coastal
{M}ekong {D}elta, {V}ietnam},
journal = {Environment international},
volume = {127},
issn = {0160-4120},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2019-04146},
pages = {442 - 451},
year = {2019},
abstract = {BackgroundSalinity intrusion into coastal regions is an
increasing threat to agricultural production of salt
sensitive crops like paddy rice. In the coastal Mekong
Delta, farmers respond by shifting to more salinity tolerant
agricultural production systems such as alternating
rice-shrimp and permanent shrimp. While shrimps are
sensitive to pesticide residues used on rice, the use of
antibiotics in shrimp farming can cause contamination in
rice crops. These patterns of cross-contamination are not
well documented empirically in the rapidly changing
agricultural landscape.Objective and methodsOur objective
was to understand changing pollution patterns induced by
shifts in agricultural land use system. We addressed this by
i) documenting pesticide and antibiotic use in three
different agriculture land use systems (permanent rice,
alternating rice-shrimp and permanent shrimp), and by ii)
determining residues of pesticides and antibiotics in top
soil layers of these three land use systems. Samples were
taken in Sóc Trăng and Bến Tre province in the Mekong
Delta, Vietnam. Chemical analyses comprised 12 of the most
commonly used pesticides in rice paddies and six common
antibiotics used in shrimp production.ResultsResults showed
that residues of pesticides were present in all agricultural
land use systems, including shrimp aquaculture. Active
ingredients were mostly fungicides with a maximum
concentration of 67 μg kg−1 found for isoprothiolane
in permanent rice systems, followed by alternating
rice-shrimp and permanent shrimp systems. Furthermore,
antibiotics were present ubiquitously, with fluoroquinolones
accumulating to larger amounts than sulfonamides and
diaminopyrimidines. All concentrations were below critical
lethal threshold values.ConclusionOverall, farmers were most
conscious of agrochemical use in alternating rice-shrimp
systems to prevent harm to shrimps, which was reflected in
overall lower concentrations of agrochemicals when compared
to rice systems. Thus, alternating rice-shrimp systems
present a low risk option in terms of food safety, which may
bring additional benefits to this so far rather low-input
system in brackish water transition zone.},
cin = {IBG-3},
ddc = {600},
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},
pubmed = {pmid:30959309},
UT = {WOS:000467383500044},
doi = {10.1016/j.envint.2019.03.038},
url = {https://juser.fz-juelich.de/record/864350},
}