Data/hora: 10/06/2024 16:11:46

Provedor de dados: | 63
País: | Brazil
Título: | Sorption and desorption of indaziflam degradates in several agricultural soils
Autores: | Alonso,Diego Gonçalves; Oliveira Jr,Rubem Silvério de; Koskinen,William Charles; Hall,Kathleen; Constantin,Jamil; Mislankar,Suresh.
Data: | 2016-04-01
Ano: | 2016
Palavras-chave: | Adsorption; Hysteresis; Metabolites; Soil properties.
Resumo: | ABSTRACT Processes regulating pesticide fate in the environment are influenced by the physicochemical properties of pesticides and soils. Sorption and desorption are important processes as they regulate the movement of pesticides in soil. Although sorption-desorption is widely studied for herbicides, studies involving their metabolites in soil are scarce. Sorption and desorption of indaziflam metabolites (indaziflam-triazinediamine (FDAT), indaziflam-triazine-indanone (ITI) and indaziflam-carboxilic acid (ICA)) were investigated in six Brazilian (BRA) soils and three United States (USA) soils with different physicochemical properties. The Freundlich equation described sorption of the metabolites for all soils (R2 &gt; 0.98; 1/n ~ 1). Sorption order (Kf) was ITI &gt; ICA &gt; FDAT. Mean values of Kf,oc were 453, 289, and 81 (BRA) and 444, 48, and 48 (USA) for metabolites ITI, ICA, and FDAT respectively. Desorption was hysteretic for all metabolites in all soils. These results suggest that these metabolites fall in the classification range of mobile to moderately mobile in soils.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200169
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/0103-9016-2015-0106
Formato: | text/html
Fonte: | Scientia Agricola  v.73 n.2 2016
Fonte: | info:eu-repo/semantics/openAccess