Soil organic amendments: impacts on sorption of organophosphate pesticides on an alluvial soil

Gaonkar, Omkar; Nambi, Indumathi M.; Govindarajan, Suresh Kumar

doi:10.1007/s11368-018-2080-6

Cited by 25 publications

(11 citation statements)

References 56 publications

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“…Although many organic amendments have proven to be effective adsorbents of pesticides, only a few studies have evaluated the functional groups involved in the adsorption process [111][112][113][114]. Accordingly, Gaonkar et al [112] have used spectroscopy to characterize the DOM from two organic amendments (mixed waste compost and dried goat manure) and the amended soils, and assess their influence on the sorption of the insecticides dichlorvos and chlorpyrifos. The DOM contained large amounts of highly humified and aromatic molecules.…”

Section: Effect Of Organic Residues On the Adsorption-desorption Of Pesticidesmentioning

confidence: 99%

Effect of Organic Residues on Pesticide Behavior in Soils: A Review of Laboratory Research

et al. 2021

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The management of large volumes of organic residues generated in different livestock, urban, agricultural and industrial activities is a topic of environmental and social interest. The high organic matter content of these residues means that their application as soil organic amendments in agriculture is considered one of the more sustainable options, as it could solve the problem of the accumulation of uncontrolled wastes while improving soil quality and avoiding its irreversible degradation. However, the behavior of pesticides applied to increase crop yields could be modified in the presence of these amendments in the soil. This review article addresses how the adsorption–desorption, dissipation and leaching of pesticides in soils is affected by different organic residues usually applied as organic amendments. Based on the results reported from laboratory studies, the influence on these processes has been evaluated of multiple factors related to organic residues (e.g., origin, nature, composition, rates, and incubation time of the amended soils), pesticides (e.g., with different use, structure, characteristics, and application method), and soils with different physicochemical properties. Future perspectives on this topic are also included for highlighting the need to extend these laboratory studies to field and modelling scale to better assess and predict pesticide fate in amended soil scenarios.

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Section: Effect Of Organic Residues On the Adsorption-desorption Of Pesticidesmentioning

confidence: 99%

Effect of Organic Residues on Pesticide Behavior in Soils: A Review of Laboratory Research

et al. 2021

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“…Most significantly, these problems of OPP removal concern aquatic environments due to the possible rapid migration of these pollutants together with water resources and the spread of pollution over large areas, including through atmospheric phenomena [ 4 ]. This problem of OPP removal from water sources is more acute as compared to soils since pesticides can remain in the soil in a bound state for a long time, for example, with humic substances [ 5 , 6 ]. This makes the search for a solution of this problem relevant for water systems.…”

Section: Introductionmentioning

confidence: 99%

“Unity and Struggle of Opposites” as a Basis for the Functioning of Synthetic Bacterial Immobilized Consortium That Continuously Degrades Organophosphorus Pesticides

et al. 2022

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This work was aimed at the development of an immobilized artificial consortium (IMAC) based on microorganisms belonging to the Gram-positive and Gram-negative bacterial cells capable of jointly carrying out the rapid and effective degradation of different organophosphorus pesticides (OPPs): paraoxon, parathion, methyl parathion, diazinon, chlorpyrifos, malathion, dimethoate, and demeton-S-methyl. A cryogel of poly(vinyl alcohol) was applied as a carrier for the IMAC. After a selection was made between several candidates of the genera Rhodococcus and Pseudomonas, the required combination of two cultures (P. esterophilus and R. ruber) was found. A further change in the ratio between the biomass of the cells inside the granules of IMAC, increasing the packing density of cells inside the same granules and decreasing the size of the granules with IMAC, gave a 225% improvement in the degradation activity of the cell combination. The increase in the velocity and the OPP degradation degree was 4.5 and 16 times greater than the individual P. esterophilus and R. ruber cells, respectively. Multiple uses of the obtained IMAC were demonstrated. The increase in IMAC lactonase activity confirmed the role of the cell quorum in the action efficiency of the synthetic biosystem. The co-inclusion of natural strains in a carrier during immobilization strengthened the IMAC activities without the genetic enhancement of the cells.

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“…[19]. Such amendments can also affect the fate of soil pesticides by providing multiple additional sorbent surfaces, which reduces their leaching potential [20][21][22] and can enhance their degradation [23]. Since the activity of soil enzymes is a good measure of soil quality, the soil metabolic rate can be used to demonstrate the effectiveness of any remedial processes adopted to treat pesticide-contaminated soils [24,25].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Compost and Biochar to Mitigate Chlorpyrifos Pollution in Soil and Their Effect on Soil Enzyme Dynamics

et al. 2021

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The widespread environmental contamination of chlorpyrifos (CP) has raised human health concerns and necessitated cost-effective methods for its remediation. The current study evaluated the degradation behavior of CP in compost and biochar amended and unamended (original and sterilized) soils in an incubation trial. Two levels of CP (100 and 200 mg kg−1), compost and biochar (0.50%) were applied, and soil was collected at different time intervals. At the higher CP level (200 mg kg−1), CP a showed lower degradation rate (ƙ = 0.0102 mg kg−1 d−1) compared with a low CP level (ƙ = 0.0173 mg kg−1 d−1). The half-lives of CP were 40 and 68 days for CP at 100 and 200 mg kg−1 in original soil, respectively, and increased to 94 and 141 days in sterilized soils. CP degradation was accelerated in compost amended soils, while suppressed in biochar amended soils. Lower half lives of 20 and 37 days were observed with compost application at CP 100 and 200 mg kg−1 doses, respectively. The activities of soil enzymes were considerably affected by the CP contamination and significantly recovered in compost and biochar amended soils. In conclusion, the application of organic amendments especially compost is an important strategy for the remediation of CP contaminated soil.

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Soil organic amendments: impacts on sorption of organophosphate pesticides on an alluvial soil

Cited by 25 publications

References 56 publications

Effect of Organic Residues on Pesticide Behavior in Soils: A Review of Laboratory Research

Effect of Organic Residues on Pesticide Behavior in Soils: A Review of Laboratory Research

“Unity and Struggle of Opposites” as a Basis for the Functioning of Synthetic Bacterial Immobilized Consortium That Continuously Degrades Organophosphorus Pesticides

Evaluation of Compost and Biochar to Mitigate Chlorpyrifos Pollution in Soil and Their Effect on Soil Enzyme Dynamics

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