Effect of Organic Matter on the Behavior and Control Effectiveness of Herbicides in Soil

V Takeshita,F.G Alonso,V.L Tornisielo,K.F Mendes

doi:10.1590/s0100-83582019370100110

V Takeshita, F.G Alonso + Show 2 more

Open Access

https://doi.org/10.1590/s0100-83582019370100110

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Abstract

ABSTRACT: With extensive use of herbicides in agricultural areas, the risk of contamination of groundwater and surface water by these products has become a worldwide concern. Practices of application or maintenance of soil organic residues that have begun to be used in agriculture for soil nutrition have demonstrated other benefits besides nutrient supplementation, such as reduced mobility and increased soil degradation of herbicides. Because it is the final destination of herbicides, soil and its constituents, especially organic matter in tropical soils, play a prominent role in processes that encompass the dynamics of herbicide molecules. In this context, it is necessary to know the influence of the organic matter and its constituents on the behavior of the herbicides. This review discusses the main relationships of organic matter in the retention, transport, and transformation processes of herbicides in the soil, as well as the interference in the weed control effectiveness of these products. Because of this, knowing the influence of organic matter in the various processes related to the behavior of herbicides in the soil allows us to adopt more appropriate management practices regarding both weed control and remediation of contaminated areas. However, despite the wide range of information on the subject in the literature, each situation is distinct due to the wide variation in the behavioral response of the products to the different types of organic material present in the soil.

Highlights

The application of herbicides is commonly used in agricultural systems, as it is a practical and efficient method for weed control
Changes made by organic matter (OM) in the soil can decrease the mobility of herbicides in the soil profile and play an important role in the management of environmental pollution due to the use of these molecules (Rojas et al, 2013)
soil organic matter (SOM) is estimated by the organic carbon content (OC), which can vary in quantity and quality depending on the source, and it is subdivided into living (4%) and dead (96%) portions (Figure 1)

Summary

Literature Review

EFFECT OF ORGANIC MATTER ON THE BEHAVIOR AND CONTROL EFFECTIVENESS OF HERBICIDES IN SOIL. Practices of application or maintenance of soil organic residues that have begun to be used in agriculture for soil nutrition have demonstrated other benefits besides nutrient supplementation, such as reduced mobility and increased soil degradation of herbicides Because it is the final destination of herbicides, soil and its constituents, especially organic matter in tropical soils, play a prominent role in processes that encompass the dynamics of herbicide molecules. Esta revisão de literatura tem por objetivo apontar as principais relações da matéria orgânica nos processos de retenção, transporte e transformação dos herbicidas no solo, além da interferência dela na eficácia de controle de plantas daninhas. Conhecer a influência da matéria orgânica nos diversos processos relacionados ao comportamento dos herbicidas no solo permite adotar práticas de manejo mais adequadas no que se refere tanto ao controle das plantas daninhas quanto à remediação de áreas contaminadas.

INTRODUCTION

ORGANIC MATTER OF THE SOIL IN RETENTION OF HERBICIDES

ORGANIC MATTER OF SOIL IN TRANSPORTATION OF HERBICIDES

ORGANIC MATTER OF THE SOIL IN THE TRANSFORMATION OF HERBICIDES

Findings

ORGANIC MATTER OF THE SOIL IN THE EFFECTIVENESS OF WEED CONTROL