Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/42310
Title: Lime and phosphate effects on atrazine sorption, leaching and runoff in soil
Other Titles: Efeito de calcário e fosfato na sorção, lixiviação e transporte de atrazina por erosão em solo
Keywords: Solos - Contaminação
Pesticidas
Argissolo
Perda de solo
Soils - Contamination
Pesticide
Argisol
Soil erosion
Issue Date: Apr-2020
Publisher: Universidade Federal de Lavras
Citation: LIMA, J. M. de et al. Lime and phosphate effects on atrazine sorption, leaching and runoff in soil. Ciência e Agrotecnologia, Lavras, v. 44, 2020. DOI: https://doi.org/10.1590/1413-7054202044022919
Abstract: Atrazine still is a widely used herbicide in tropical soils to control annual broad-leaved weeds and annual grasses mainly in maize and sorghum plantations. Sorption and desorption in such soils are important processes that affect transport, ending with soil and water contamination, not only in these soils, but in other soils around the world. Lime and phosphate are important amendments in tropical soils to mitigate low fertility. These treatments can affect interaction among soil particles and between soil and atrazine. The objectives here were to evaluate the effect of lime, phosphate, and lime + phosphate treatments on sorption and transport of atrazine in a Typic Hapludult, using soil-erosion-plots at field conditions in a 3%-slope landscape 20 m away from the floodplain. Water- and sediment-sampler devices were used to measure runoff during an entire rainy season. Soil, water and sediments were sampled and analyzed for atrazine. By increasing pH and changing soil organic matter interaction with mineral particles, lime and lime + phosphate decreased sorption in the upper 20-cm layer. This affected leaching and runoff of atrazine, showing that when lime and lime + phosphate were applied to soil, this herbicide had more potential to go deeper in the soil profile, towards the groundwater, or to runoff towards the lower part of the landscape. However, even with increasing leaching, the amount of rainfall, and water infiltration, were enough to dilute atrazine into levels below the maximum contaminant level (MCL) of atrazine in drinking water.
URI: http://repositorio.ufla.br/jspui/handle/1/42310
Appears in Collections:DEG - Artigos publicados em periódicos
DRH - Artigos publicados em periódicos

Files in This Item:
File Description SizeFormat 
ARTIGO_Lime and phosphate effects on atrazine sorption, leaching and runoff in soil.pdf1,35 MBAdobe PDFView/Open


This item is licensed under a Creative Commons License Creative Commons