Persistence and degradation of carbofuran in Spanish soil suspensions

Mora, Alfredo Pérez de; Comejo, J.; Revilla, E.; Hermosı́n, M.C.

doi:10.1016/0045-6535(96)00068-9

Cited by 21 publications

(8 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…One of the advantages of a highly persistent pesticide is the reduced frequency of application, which is particularly important when field trials are undertaken at sites which cannot be visited very frequently due to long travel distances. Carbofuran normally requires a single application throughout an entire cropping season (Mora et al 1996). Seasonal application of carbofuran at these distant sites is justified since it has[ two months withholding period (Department of Agriculture 2007).…”

Section: Experimental Plots and Treatmentsmentioning

confidence: 99%

Impact of biocontrol agents on Lantana camara in an inland area of South Africa

et al. 2020

View full text Add to dashboard Cite

Lantana camara L. (Verbenaceae) is a weed of significant concern in many tropical and subtropical countries. This work aimed to quantify the combined impact of the established suite of lantana biocontrol agents on plant growth under field conditions in an inland area with a continental climate in South Africa. An insecticidal exclusion method was employed to compare plant growth parameters and agent damage between exclusion plants and biocontrol plants. Despite failing to maintain exclusion plants completely biocontrol agent-free, leaf damage was 44% greater, and side-stem production 16% less, in biocontrol compared to exclusion plants. There was a positive relationship between leaf damage and reduction in side-stem production over the study period. Overall, insecticidal exclusion, though only partially effective, showed that the established suite of lantana biocontrol agents is having a measurable growthinhibitory impact on the target weed. Keywords Agent damage Á Carbofuran Á Insecticidal exclusion Á Invasive alien plants Á Teleonemia scrupulosa Handling Editor: S. Raghu.

show abstract

Section: Experimental Plots and Treatmentsmentioning

confidence: 99%

Impact of biocontrol agents on Lantana camara in an inland area of South Africa

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The behavior of such polluting compounds in the environment is strongly determined by their physicochemical properties related to processes such as adsorption, leaching, vaporization and degradation [1,2]. Among the pesticides, organophosphate and carbamate compounds are the most widely used due to their high insecticidal activity and relatively low persistence [3]. These pesticides are toxic because they act as inhibitors of acetylcholinesterase , an enzyme that catalysis in a very efficient way the hydrolysis of the neurotransmitter acetylcholine.…”

Section: Introductionmentioning

confidence: 99%

Determination of Parathion and Carbaryl Pesticides in Water and Food Samples Using a Self Assembled Monolayer /Acetylcholinesterase Electrochemical Biosensor

Pedrosa

Caetano

Machado

et al. 2008

Sensors

View full text Add to dashboard Cite

An acetylcholinesterase (AchE) based amperometric biosensor was developed by immobilisation of the enzyme onto a self assembled modified gold electrode. Cyclic voltammetric experiments performed with the SAM-AchE biosensor in phosphate buffer solutions (pH = 7.2) containing acetylthiocholine confirmed the formation of thiocholine and its electrochemical oxidation at Ep = 0.28 V vs Ag/AgCl. An indirect methodology involving the inhibition effect of parathion and carbaryl on the enzymatic reaction was developed and employed to measure both pesticides in spiked natural water and food samples without pre-treatment or pre-concentration steps. Values higher than 91-98.0% in recovery experiments indicated the feasibility of the proposed electroanalytical methodology to quantify both pesticides in water or food samples. HPLC measurements were also performed for comparison and confirmed the values measured amperometrically.

show abstract

“…After this time, a decrease in the concentration in water was observed due the degradation of carbofuran (metabolites were observed in the chromatograms). Because the tests were conducted under "aseptic" conditions in the dark, the most probable mechanism of degradation is abiotic hydrolysis (Mora et al, 1996). Because the half-life of carbofuran reported in the literature is longer than that observed here, it was hypothesized that the commercial formula contains some additive that induces the extinction of the active ingredient.…”

Section: Resultsmentioning

confidence: 92%