Integral Study of Atrazine Behaviour in Field Lysimeters in Argentinean Humid Pampas Soils

Atrazine behavior during crop maize (Zea mays L.) production in soils of Argentine humid pampas was investigated. Lysimeters (3.3 x 3.3 x 1.4 m) with a Typic Argiudoll (Pergamino) and others with a Typic Hapludoll (Junín) were monitored for drainage water content and atrazine concentrations in soil...

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Autores principales:	Hang,Susana, Andriulo,Adrián, Sasal,Carolina, Nassetta,Mirtha M, Portela,Silvina, Cañas,Ana I
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2010
Materias:	atrazine extractable residues preferential flow half-life contamination risk
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100011
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spelling	oai:scielo:S0718-583920100001000112018-10-01Integral Study of Atrazine Behaviour in Field Lysimeters in Argentinean Humid Pampas SoilsHang,SusanaAndriulo,AdriánSasal,CarolinaNassetta,Mirtha MPortela,SilvinaCañas,Ana I atrazine extractable residues preferential flow half-life contamination risk Atrazine behavior during crop maize (Zea mays L.) production in soils of Argentine humid pampas was investigated. Lysimeters (3.3 x 3.3 x 1.4 m) with a Typic Argiudoll (Pergamino) and others with a Typic Hapludoll (Junín) were monitored for drainage water content and atrazine concentrations in soil and water. Soil profiles were sampled in four depths in three dates, and water drainage pooled in four periods. Most of atrazine loss in drainage occurred within 30 d of atrazine application being 0.13% and 0.03% of the total atrazine applied for Pergamino and Junín, respectively. Under laboratory conditions half-life average in both profiles was 16 d. Atrazine extractable residues (AER) in lysimeters showed differences in quantity and distribution between both profiles. Extractable residues were 25.7 (Pergamino) and 69.4 g ha-1 (Junín). At the 30th day of application, AER represented 25% of total AER in Junín and 88% in Pergamino in the first 30 cm. Occurrence of preferential flow through the Bt horizon (Pergamino) may explain differences detected. High proportion of AER in Junín profile suggests low atrazine affinity and should be followed through time in order to evaluate actual stability of these residues and if they constitute a potential risk for aquifers.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.70 n.1 20102010-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100011en10.4067/S0718-58392010000100011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	atrazine extractable residues preferential flow half-life contamination risk
spellingShingle	atrazine extractable residues preferential flow half-life contamination risk Hang,Susana Andriulo,Adrián Sasal,Carolina Nassetta,Mirtha M Portela,Silvina Cañas,Ana I Integral Study of Atrazine Behaviour in Field Lysimeters in Argentinean Humid Pampas Soils
description	Atrazine behavior during crop maize (Zea mays L.) production in soils of Argentine humid pampas was investigated. Lysimeters (3.3 x 3.3 x 1.4 m) with a Typic Argiudoll (Pergamino) and others with a Typic Hapludoll (Junín) were monitored for drainage water content and atrazine concentrations in soil and water. Soil profiles were sampled in four depths in three dates, and water drainage pooled in four periods. Most of atrazine loss in drainage occurred within 30 d of atrazine application being 0.13% and 0.03% of the total atrazine applied for Pergamino and Junín, respectively. Under laboratory conditions half-life average in both profiles was 16 d. Atrazine extractable residues (AER) in lysimeters showed differences in quantity and distribution between both profiles. Extractable residues were 25.7 (Pergamino) and 69.4 g ha-1 (Junín). At the 30th day of application, AER represented 25% of total AER in Junín and 88% in Pergamino in the first 30 cm. Occurrence of preferential flow through the Bt horizon (Pergamino) may explain differences detected. High proportion of AER in Junín profile suggests low atrazine affinity and should be followed through time in order to evaluate actual stability of these residues and if they constitute a potential risk for aquifers.
author	Hang,Susana Andriulo,Adrián Sasal,Carolina Nassetta,Mirtha M Portela,Silvina Cañas,Ana I
author_facet	Hang,Susana Andriulo,Adrián Sasal,Carolina Nassetta,Mirtha M Portela,Silvina Cañas,Ana I
author_sort	Hang,Susana
title	Integral Study of Atrazine Behaviour in Field Lysimeters in Argentinean Humid Pampas Soils
title_short	Integral Study of Atrazine Behaviour in Field Lysimeters in Argentinean Humid Pampas Soils
title_full	Integral Study of Atrazine Behaviour in Field Lysimeters in Argentinean Humid Pampas Soils
title_fullStr	Integral Study of Atrazine Behaviour in Field Lysimeters in Argentinean Humid Pampas Soils
title_full_unstemmed	Integral Study of Atrazine Behaviour in Field Lysimeters in Argentinean Humid Pampas Soils
title_sort	integral study of atrazine behaviour in field lysimeters in argentinean humid pampas soils
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100011
work_keys_str_mv	AT hangsusana integralstudyofatrazinebehaviourinfieldlysimetersinargentineanhumidpampassoils AT andriuloadrian integralstudyofatrazinebehaviourinfieldlysimetersinargentineanhumidpampassoils AT sasalcarolina integralstudyofatrazinebehaviourinfieldlysimetersinargentineanhumidpampassoils AT nassettamirtham integralstudyofatrazinebehaviourinfieldlysimetersinargentineanhumidpampassoils AT portelasilvina integralstudyofatrazinebehaviourinfieldlysimetersinargentineanhumidpampassoils AT canasanai integralstudyofatrazinebehaviourinfieldlysimetersinargentineanhumidpampassoils
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Integral Study of Atrazine Behaviour in Field Lysimeters in Argentinean Humid Pampas Soils

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