Consulta: creatorFacets:"Hang,Susana"
Registros recuperados: 2
Data/hora: 09/06/2024 08:20:26

Glyphosate Mineralization: Effect of Temperature and Soybean and Corn Crop Residues
Provedor de dados: 117
Autores: Rampoldi,Ariel; Hang,Susana; Barriuso,Enrique.
Mineralization is the main mechanism of dissipation of glyphosate herbicide (N-[phosphonomethyl] glycine) in soil. However, there is scarce information about the mineralization process in strata formed by stubbles in no-tillage systems. The kinetics and rate of mineralization of herbicide in stubbles of soybean (Glycine max L. Merr.) and corn (Zea mays L.) were investigated. To evaluate the effect of age of crop residues, samples of soybean stubbles were collected immediately after harvest (Soja 1) and four months after harvest (Soja 2). Corn crop residues were collected three months after harvest. Glyphosate evolution and total microbial activity (TMA) were monitored by release of 14C-CO2 and C-CO2 under laboratory conditions with two temperatures, 15 and...
Tipo: Journal article
Palavras-chave: Glyphosate; Stubbles; Mineralization; Non-tillage system; Total microbial activity.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000100002

Integral Study of Atrazine Behaviour in Field Lysimeters in Argentinean Humid Pampas Soils
Provedor de dados: 117
Autores: Hang,Susana; Andriulo,Adrián; Sasal,Carolina; Nassetta,Mirtha M; Portela,Silvina; Cañas,Ana I.
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...
Tipo: Journal article
Palavras-chave: Atrazine extractable residues; Preferential flow; Half-life; Contamination risk.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100011