Behavior of MCPA in four intensive cropping soils amended with fresh, composted, and aged olive mill waste

López‐Piñeiro, Antonio; Peña, David; Albarrán, Ángel; Sánchez-Llerena, Javier; Becerra, Daniel

doi:10.1016/j.jconhyd.2013.07.003

Cited by 47 publications

(23 citation statements)

References 32 publications

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“…Further studies of Haberhauer et al and Spark and Swift have shown that dissolved organic matter only minimally affected the adsorption of MCPA and 2,4‐D in soil. Thus, taking into account the results of the above studies and other studies suggesting that addition of organic fertilizers increases the degradation rate , it may be assumed that these types of fertilizers should decrease the leaching of phenoxyalkanoic acid herbicides.…”

Section: Influence Of Liming and Fertilizers On Leachingmentioning

confidence: 92%

“…The effectiveness of desorption of phenoxyalkanoic acids (using 0.01-0.02 M CaCl 2 or KCl) is positively correlated with the soil pH [38,45,48] and negatively correlated with the content of organic matter [38,48,60,66,67]. In soils with an organic matter content >1%, usually 40% to 80% of adsorbed phenoxyalkanoic acid herbicide is capable of desorption, though values greater than 90% have also been observed [45,[67][68][69]. In soils with an organic matter content <0.3%, the effectiveness of desorption reached as high as 100% [60,67].…”

Section: Factors Affecting the Extent Of Adsorption And Desorptionmentioning

confidence: 99%

“…The degradation rate was the highest at 50% of maximum water holding capacity [94] but lower when the soil moisture was much lower or much higher [4,94,110]. For the same reason, the degradation of phenoxyalkanoic acid herbicides was lower in acidic soils than in soils with pH >6 [56,69,100,112] and higher in soils amended with fertilizers containing nitrogen and phosphorus [109]. Moreover, a very important factor increasing the degradation rate is the previous use of phenoxyalkanoic acid herbicides in the soil [93,106,111,113,114].…”

Section: Factors Affecting the Degradation Processmentioning

confidence: 99%

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Adsorption and degradation of phenoxyalkanoic acid herbicides in soils: A review

Paszko

Muszyński

Materska

et al. 2015

Environmental Toxicology and Chemistry

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The primary aim of the present review on phenoxyalkanoic acid herbicides-2-(2,4-dichlorophenoxy) acetic acid (2,4-D), 2-(4-chloro-2-methylphenoxy) acetic acid (MCPA), (2R)-2-(2,4-dichlorophenoxy) propanoic acid (dichlorprop-P), (2R)-2-(4-chloro-2-methylphenoxy) propanoic acid (mecoprop-P), 4-(2,4-dichlorophenoxy) butanoic acid (2,4-DB), and 4-(4-chloro-2-methylphenoxy) butanoic acid (MCPB)-was to compare the extent of their adsorption in soils and degradation rates to assess their potential for groundwater contamination. The authors found that adsorption decreased in the sequence of 2,4-DB > 2,4-D > MCPA > dichlorprop-P > mecoprop-P. Herbicides are predominantly adsorbed as anions-on organic matter and through a water-bridging mechanism with adsorbed Fe cations-and their neutral forms are adsorbed mainly on organic matter. Adsorption of anions of 2,4-D, MCPA, dichlorprop-P, and mecoprop-P is inversely correlated with their lipophilicity values, and modeling of adsorption of the compounds based on this relationship is possible. The predominant dissipation mechanism of herbicides in soils is bacterial degradation. The contribution of other mechanisms, such as degradation by fungi, photodegradation, or volatilization from soils, is much smaller. The rate of bacterial degradation decreased in the following order: 2,4-D > MCPA > mecoprop-P > dichlorprop-P. It was found that 2,4-D and MCPA have the lowest potential for leaching into groundwater and that mecoprop-P and dichlorprop-P have slightly higher potential. Because of limited data on adsorption and degradation of 2,4-DB and MCPB, estimation of their leaching potential was not possible. Environ Toxicol Chem 2016;35:271-286. # 2015 SETAC

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Section: Influence Of Liming and Fertilizers On Leachingmentioning

confidence: 92%

Section: Factors Affecting the Extent Of Adsorption And Desorptionmentioning

confidence: 99%

Section: Factors Affecting the Degradation Processmentioning

confidence: 99%

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Adsorption and degradation of phenoxyalkanoic acid herbicides in soils: A review

Paszko

Muszyński

Materska

et al. 2015

Environmental Toxicology and Chemistry

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“…Pre-exposure to 2,4-D and MCPA has been reported to boost degrading populations, thereby increasing the dissipation of these herbicides in agricultural soils (Baelum et al 2008;Smith and Aubin 1991). Differences in dissipation between both MCPA levels underline the importance of initial herbicide concentrations in Several studies have shown that degradation of organic compounds in soils can be improved by adding raw organic matter or compost (e.g., Barker and Bryson 2002;López-Piñeiro et al 2013). In our study, litter addition significantly accelerated MCPA dissipation only in soils exposed to the high MCPA concentration ( Fig.…”

Section: Discussionmentioning

confidence: 99%

“…These factors include, among others, initial pesticide concentration (Fomsgaard 1997) and organic matter content. Organic matter especially has been shown to enhance MCPA and 2,4-D dissipation in soil (e.g., López-Piñeiro et al 2013). For example, an enhanced degradation of MCPA and other herbicides was observed in organic-rich Norwegian soils by Thorstensen and Lode (2001).…”

Section: Introductionmentioning

confidence: 99%

Evidence for the importance of litter as a co-substrate for MCPA dissipation in an agricultural soil

Saleh

Pagel

Enowashu

et al. 2015

Environ Sci Pollut Res

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Environmental controls of 2-methyl-4-chlorophenoxyacetic acid (MCPA) degradation are poorly understood. We investigated whether microbial MCPA degraders are stimulated by (maize) litter and whether this process depends on concentrations of MCPA and litter. In a microcosm experiment, different amounts of litter (0, 10 and 20 g kg(-1)) were added to soils exposed to three levels of the herbicide (0, 5 and 30 mg kg(-1)). The treated soils were incubated at 20 °C for 6 weeks, and samples were taken after 1, 3 and 6 weeks of incubation. In soils with 5 mg kg(-1) MCPA, about 50 % of the MCPA was dissipated within 1 week of the incubation. Almost complete dissipation of the herbicide had occurred by the end of the incubation with no differences between the three litter amendments. At the higher concentration (30 mg kg(-1)), MCPA endured longer in the soil, with only 31 % of the initial amount being removed at the end of the experiment in the absence of litter. Litter addition greatly increased the dissipation rate with 70 and 80 % of the herbicide being dissipated in the 10 and 20 g kg(-1) litter treatments, respectively. Signs of toxic effects of MCPA on soil bacteria were observed from related phospholipid fatty acid (PLFA) analyses, while fungi showed higher tolerance to the increased MCPA levels. The abundance of bacterial tfdA genes in soil increased with the co-occurrence of litter and high MCPA concentration, indicating the importance of substrate availability in fostering MCPA-degrading bacteria and thereby improving the potential for removal of MCPA in the environment.

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The Power of Social Media and Its Infl uence on Corporate Reputation

McCorkindale

DiStaso

2013

The Handbook of Communication and Corporate Reputation

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The aim of this study was to evaluate the changes in ecotoxicity of agricultural soil under the infl uence of Agritox 500SL, an herbicide from the phenoxyacid group, containing MCPA (2-methyl-4-chlorophenoxyacetic acid), applied every 3 weeks for 3 months. Biodegradation potential in control and weathered soil was confi rmed by the analysis of the functional gene tfdA using PCR technique. Properties of the soil were assessed by the analysis of granulometric composition, pH, the content of macroelements and heavy metals. The soil ecotoxicity was measured using biotests Phytotoxkit ® and Microtox ® .The content of Ni (70 mg/kg) and Cr (21 mg/kg) was especially high in the soil with Agritox 500SL. The highest toxic effect for test organisms was observed in freshly spiked soil: 99% L. sativum, 97% S. alba, 66% S. saccharatum (% root growth inhibition) and 76% V. fi scheri (% luminescence inhibition). Weathering processes signifi cantly decreased the soil ecotoxicity being 36%, 34% and 3% for V. fi scherii, S. alba and L. sativum, respectively. S. saccharatum showed 12% stimulation of the root length. Molecular analysis confi rmed the potential of indigenous soil bacteria to biodegrade MCPA by the presence of tfdAα and tfdA Class III genes in the studied soil. The obtained results proved that either MCPA and residues of its decomposition or additional supporting substances in Agritox 500 SL, can infl uence enhanced soil ecototoxicity. The presence of functional tfdA genes in both: control and weathered soil, confi rmed the high potential of indigenous soil bacteria to degrade MCPA.

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Behavior of MCPA in four intensive cropping soils amended with fresh, composted, and aged olive mill waste

Cited by 47 publications

References 32 publications

Adsorption and degradation of phenoxyalkanoic acid herbicides in soils: A review

Adsorption and degradation of phenoxyalkanoic acid herbicides in soils: A review

Evidence for the importance of litter as a co-substrate for MCPA dissipation in an agricultural soil

The Power of Social Media and Its Infl uence on Corporate Reputation

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