Movement of the tebuthiuron herbicide in two representative soils of recharge areas of the Guarani aquifer

Revista Brasileira de Engenharia Agrícola e Ambiental

Spadotto, Cláudio A.¹  Luchini, Luis C.²  Gomes, Marco A. F.¹  Pereira, Anderson S.¹  Matallo, Marcus B.² 

[1] Embrapa Meio Ambiente, Jaguariúna;Instituto Biológico

关键词: Quatzipsammentic Haplorthox;    Typic Quartzipsamment;    hydraulic conductivity;    groundwater    INTRODUÇÃO A atividade agrícola tradicional requer quantidade considerável de agrotóxicos;    sejam eles herbicidas;    inseticidas;    fungicidas;    nematicidas;    acaricidas ou formicidas;   

DOI  :  10.1590/S1415-43662006000200032

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The movement of the tebuthiuron herbicide was analyzed in two representative soils - Quatzipsammentic Haplorthox, Typic Quartzipsamment, of the recharge areas of the Guarani aquifer in Brazil. The main factors in this movement are hydraulic conductivity (K), organic carbon content (OC) and clay content (CT). The experiment was carriel out in columns (type lisimeters) with application of the commercial product. These parameters showed great influence on the vertical movement of the tebuthiuron herbicide, specially in the Typic Quartzipsamment soil. The high (K) values in this soil have a direct relationship with tebuthiuron collected in water percolated by columns. Inverse relationship between carbon content (OC) and clay content (CT) with hydraulic conductivity (K) was observed. The results obtained aim to subside assessment of environmental risks, mainly groundwater from aquifer recharge areas naturally fragile, with emphasis for the Guarani aquifer.

【 授权许可】

CC BY-NC