Sorption-desorption isotherms and biodegradation of glyphosate in two tropical soils aged with eucalyptus biochar

Junqueira, Leonardo; Mendes, Kássio Ferreira; Sousa, Rodrigo Nogueira de; Almeida, Cassio de Souza; Alonso, Fernando García; Tornisielo, Valdemar Luiz

doi:10.1080/03650340.2019.1686139

Cited by 11 publications

(4 citation statements)

References 50 publications

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“…The main processes studied to evaluate the environmental fate of herbicides are sorption kinetics, sorption–desorption, degradation, biodegradation, bioavailability, and transport [ 161 , 162 , 163 ]. Sorption is the key parameter in evaluating the fate and behavior of herbicides in soils in relation to bioavailability, distribution, and transport to other environmental compartments [ 164 ].…”

Section: Pesticide Chemical Behavior In the Environmentmentioning

confidence: 99%

Insect Epigenetic Mechanisms Facing Anthropogenic-Derived Contamination, an Overview

Olivares-Castro

Cáceres-Jensen

Guerrero-Bosagna

et al. 2021

Insects

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Currently, the human species has been recognized as the primary species responsible for Earth’s biodiversity decline. Contamination by different chemical compounds, such as pesticides, is among the main causes of population decreases and species extinction. Insects are key for ecosystem maintenance; unfortunately, their populations are being drastically affected by human-derived disturbances. Pesticides, applied in agricultural and urban environments, are capable of polluting soil and water sources, reaching non-target organisms (native and introduced). Pesticides alter insect’s development, physiology, and inheritance. Recently, a link between pesticide effects on insects and their epigenetic molecular mechanisms (EMMs) has been demonstrated. EMMs are capable of regulating gene expression without modifying genetic sequences, resulting in the expression of different stress responses as well as compensatory mechanisms. In this work, we review the main anthropogenic contaminants capable of affecting insect biology and of triggering EMMs. EMMs are involved in the development of several diseases in native insects affected by pesticides (e.g., anomalous teratogenic reactions). Additionally, EMMs also may allow for the survival of some species (mainly pests) under contamination-derived habitats; this may lead to biodiversity decline and further biotic homogenization. We illustrate these patterns by reviewing the effect of neonicotinoid insecticides, insect EMMs, and their ecological consequences.

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Section: Pesticide Chemical Behavior In the Environmentmentioning

confidence: 99%

Insect Epigenetic Mechanisms Facing Anthropogenic-Derived Contamination, an Overview

Olivares-Castro

Cáceres-Jensen

Guerrero-Bosagna

et al. 2021

Insects

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show abstract

“…Junqueira et al . (2019) assessed glyphosate sorption in soil amended with organic material (biochar) and verified similar sorption between soils with and without alterations, indicating that a 30‐day ageing was not enough to change soil characteristics and herbicide sorption sites. However, after 60 days herbicidal sorption materials was lower in all tests, possibly due to increased soil base saturation and greater herbicide competition for sorption sites.…”

Section: Discussionmentioning

confidence: 87%

Aminocyclopyrachlor sorption–desorption and leaching in soil amended with organic materials from sugar cane cultivation

et al. 2020

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The correct application of a new herbicide depends on knowledge concerning its behaviour within the cultivation system. The objective of this study was to evaluate the sorption–desorption process of aminocyclopyrachlor in soils with the addition of three aged organic materials from sugar cane and their transport via leaching. Sugar cane straw (12 t/ha), filter cake (90 t/ha) and vinasse (200 m3/ha) were added to a clayey soil 15, 30 and 60 days before herbicide application. Sorption and desorption were evaluated by the batch equilibrium method. For leaching assessments, the materials were applied to the soil surface. Sorption was relatively low in all treatments (Kd = 0.17–0.41 L/kg), although significantly higher in soil without organic material addition. A negative correlation between herbicide sorption and increased soil base saturation was observed, indicating competition for sorption sites. With the addition of vinasse, 71% of the herbicide reached the leachate, while <50% reached the leachate in the other treatments. Aminocyclopyrachlor availability was not reduced with organic material addition to the soil, which may be favourable for weed control. However, the presence of vinasse leads to the risk of leaching to deeper soil layers than the seed bank.

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“…Aging alters the properties of biochar, affecting the degradation of herbicides, however, these changes are not fully elucidated [72]. Glyphosate showed no variation in degradation in two tropical soils (Ultisol and Alfisol) amended with eucalyptus biochar aged [73]. The aging of soil-wood biochar mixtures (Betula sp.…”

Section: Factors Affecting Herbicide Degradation In Biochar-amended Soilsmentioning

confidence: 99%

Degradation Process of Herbicides in Biochar-Amended Soils: Impact on Persistence and Remediation

Mielke¹,

Mendes²,

Sousa³

et al. 2022

Biodegradation Technology of Organic and Inorganic Pollutants

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Biochar is a solid material derived from different feedstocks that is added to the soil for various agronomic and environmental purposes, such as nutrient sources and CO2 emission mitigators. In modern agriculture, the application of herbicides directly in the soil is common for pre-emergent weed control; however, biochars may interfere in the degradation processes of these agrochemicals, increasing or decreasing their persistence. Long persistence is desirable for some herbicides in determined cultivation systems, especially in monoculture, but persistence is undesirable in crop rotation and/or succession systems because the subsequent cropping can be sensitive to the herbicide, causing carryover problems. Therefore, knowing the interactions of biochar-herbicide is essential, since these interactions depend on feedstock, pyrolysis conditions (production temperature), application rate, biochar aging, among other factors; and the physical-chemical characteristics of the herbicide. This chapter shows that the addition of biochar in the soil interferes in the persistence or remediation processes of the herbicide, and taking advantage of the agricultural and environmental benefits of biochars without compromising weed control requires a broad knowledge of the characteristics of biochar, soil, and herbicide and their interactions.

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Sorption-desorption isotherms and biodegradation of glyphosate in two tropical soils aged with eucalyptus biochar

Cited by 11 publications

References 50 publications

Insect Epigenetic Mechanisms Facing Anthropogenic-Derived Contamination, an Overview

Insect Epigenetic Mechanisms Facing Anthropogenic-Derived Contamination, an Overview

Aminocyclopyrachlor sorption–desorption and leaching in soil amended with organic materials from sugar cane cultivation

Degradation Process of Herbicides in Biochar-Amended Soils: Impact on Persistence and Remediation

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