Sorption and desorption of Atrazine in horizons of the Red-Yellow Latosol

Alba R A Piratoba,Gustavo A M Pereira,Marcos S Miranda,Claudio F Lima,Antonio A Da Silva,Natalia M E Marulanda

doi:10.51694/advweedsci/2021;39:00003

Abstract

Background: Studies of sorption and desorption of herbicides in soils are essential in predicting their transport, bioavailability, and transformation in the soil profile. These studies are also vital to predict the agronomic efficiency of the herbicides in controlling weeds. Objective: In this study, atrazine’s sorption and desorption kinetics were evaluated in samples composed of single and a mixture of horizons from the Red-Yellow Latosol profile. Methods: This was performed by the Batch equilibrium method, and the quantification was carried [...]

Highlights

Agricultural activities are closely related to a productive model that includes mechanization, the use of fertilizers, and use of synthetic pesticides to control weeds, diseases and pests in crops, leading to higher productivity
It was concluded that the organic matter present in greater quantity in horizon A of the Red-Yellow Latosol has a crucial role in the dynamics of atrazine in the horizons of this soil
One sample was composed of a mixture of the horizons A and B (HAB), and another was composed of a mixture of the horizons A, B, and C (HABC)

Summary

Introduction

Agricultural activities are closely related to a productive model that includes mechanization, the use of fertilizers, and use of synthetic pesticides to control weeds, diseases and pests in crops, leading to higher productivity Among these substances, since the Green Revolution, herbicides stand out (Rigotto et al, 2014), and in Brazil, they correspond to the most commercialized pesticides (Sindiveg, 2017). Studies of sorption and desorption of herbicides in soils are essential in predicting their transport, bioavailability, and transformation in the soil profile. These studies are vital to predict the agronomic efficiency of the herbicides in controlling weeds. The Kf values obtained varied between 0.188 and 2.592, and the Koc values ranged between 37.76 and 143.81, which

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Conclusion