Data/hora: 09/06/2024 03:43:32

Provedor de dados: | 65
País: | Brazil
Título: | Estimation of herbicide bioconcentration in sugarcane (Saccharum officinarum L.)
Autores: | Cerdeira,Antonio Luiz; Paraíba,Lourival Costa; Queiroz,Sonia Claudia Nascimento de; Matallo,Marcus Barifouse; Franco,Daniel Andrade de siqueira; Ferracini,Vera Lúcia.
Data: | 2015-04-01
Ano: | 2015
Palavras-chave: | Herbicide; Bioconcentration factor; Plant uptake; Model; Bagasse adsorption.
Resumo: | Sugarcane is an important crop for sugar and biofuel production in Brazil. Growers depend greatly on herbicides to produce it. This experiment used herbicide physical-chemical and sugarcane plant physiological properties to simulate herbicide uptake and estimate the bioconcentration factor (BCF). The (BCF) was calculated for the steady state chemical equilibrium between the plant herbicide concentration and soil solution. Plant-water partition coefficient (sugarcane bagasse-water partition coefficient), herbicide dilution rate, metabolism and dissipation in the soil-plant system, as well as total plant biomass factors were used. In addition, we added Tebuthiuron at rate of 5.0kg a.i. ha-1 to physically test the model. In conclusion, the model showed the following ranking of herbicide uptake: sulfentrazone &gt; picloram &gt;tebuthiuron &gt; hexazinone &gt; metribuzin &gt; simazine &gt; ametryn &gt; diuron &gt; clomazone &gt; acetochlor. Furthermore, the highest BCF herbicides showed higher Groundwater Ubiquity Score (GUS) index indicating high leaching potential. We did not find tebuthiuron in plants after three months of herbicide application
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000400591
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20120466
Formato: | text/html
Fonte: | Ciência Rural  v.45 n.4 2015
Fonte: | info:eu-repo/semantics/openAccess