Degradation of Oxyfluorfen Herbicide by Soil Microorganisms Biodegradation of Herbicides

Siddig, Marmar El; Elhussein, Adil A.; Mohamed, Afrah T.; Osman, Awad G.

doi:10.3923/biotech.2011.274.279

Cited by 65 publications

(15 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, we considered that photodegradation did not play an important role in the dissipation of oxyfluorfen in our soils and other dissipation processes should be considered. Oxyfluorfen dissipation can be attributed to microbial degradation and depends on microbial species and temperature . Some authors have found that an increase in soil moisture level consistently decreased pesticide persistence and it has been related either to an increase in pesticide bioavailability or/and to an enhancement of soil microbial activity .…”

Section: Resultsmentioning

confidence: 99%

Influence of Olive Oil Mill Waste Amendment on Fate of Oxyfluorfen in Southern Spain Soils

Calderón

Real

Cabrera

et al. 2015

CLEAN Soil Air Water

View full text Add to dashboard Cite

Oxyfluorfen herbicide residues have been previously reported in surface and ground water in the Guadalquivir river basin in Spain. Soil factors and processes (sorption, dissipation and leaching) influencing the potential offsite transport of oxyfluorfen to surface and ground water were characterized in laboratory experiments for two soils from Southern Spain. The influence of olive-oil mill waste amendment on the soil processes was also determined. Oxyfluorfen sorption in unamended soils was not significantly affected by soil active components (organic matter and clay fraction). However, a significant increase in soil sorption of the herbicide was observed with upon amendment. Laboratory half-life values for oxyfluorfen in unamended sandy clay loam and silty clay soils at 40% moisture content and 25°C were 29 and 19 days, respectively, and it increased by a factor of 4 upon amendment. Oxyfluorfen's mobility along soil profile increased with the amendment in leaching studies at 25°C, suggesting that dissolved organic matter of amendment can play an important role enhancing soil vertical movement of the pesticide. The increase in soil adsorption and persistence observed with olive-oil mill waste amendment can promote its losses by runoff following winter application, whereas vertical movement of oxyfluorfen can be enhanced following spring application when olive-oil mill waste amendment is also applied. Keywords

show abstract

Section: Resultsmentioning

confidence: 99%

Influence of Olive Oil Mill Waste Amendment on Fate of Oxyfluorfen in Southern Spain Soils

Calderón

Real

Cabrera

et al. 2015

CLEAN Soil Air Water

View full text Add to dashboard Cite

show abstract

“…After planting ginger, three of the four plots were separately treated with the herbicide mixture (pendimethalin EC plus oxyfluorfen EC) at the recommended (2 + 0.3 L ha –1 ), low (1 + 0.15 L ha –1 ), or high (3 + 0.45 L L ha –1 ) rate, and the fourth plot provided a nonherbicide control (CK). Soil samples (<20 cm from the surface) were collected at 0, 2, 4, 8, and 16 weeks after herbicide application, and at harvest time (October18) . At least five locations were sampled in each plot, resulting in a total sample of about 1 kg.…”

Section: Materials and Methodsmentioning

confidence: 99%

“…Previous research has shown these herbicides to have moderate to high soil persistence with some risk to groundwater and the environment generally . The degradation pathways of pendimethalin and oxyfluorfen are photolysis, chemical hydrolysis, and microbial degradation, and nitroaromatic reduction is the important process during photolysis. − The residual activity of pendimethalin and oxyfluorfen in the soil depends on the soil type, cultivation, soil moisture, and temperature. ,,− …”

Section: Introductionmentioning

confidence: 99%

Effect of Soil Fumigation on Degradation of Pendimethalin and Oxyfluorfen in Laboratory and Ginger Field Studies

Huang

Fang

et al. 2016

J. Agric. Food Chem.

View full text Add to dashboard Cite

Herbicides are usually applied to agricultural fields following soil fumigation to provide effective weed control in high-value cash crops. However, phytotoxicity has been observed in ginger seedlings following the application of herbicides in fumigated fields. This study tested a mixture of herbicides (pendimethalin and oxyfluorfen) and several fumigant treatments in laboratory and field studies to determine their effect on the growth of ginger. The results showed that soil fumigation significantly (P < 0.05) extended the degradation period of these herbicides in the field and in laboratory studies. The half-life of pendimethalin was extended by an average of approximately 1.29 times in the field and 1.74 times in the laboratory. The half-life of oxyfluorfen was extended by an average of about 1.19 times in the field and 1.32 times in the laboratory. Moreover, the extended period of herbicide degradation in the fumigant and nonfumigant treatments significantly reduced ginger plant height, leaf number, stem diameter, and the chlorophyll content. The study concluded that applying a dose below the recommended rate of these herbicides in chloropicrin (CP) or CP + 1,3-dichloropropene fumigated ginger fields is appropriate, as application of the recommended herbicide dose in fumigated soil may be phytotoxic to ginger.

show abstract

“…Strains of microorganisms isolated from pesticides polluted soils in Sudan were reported to have great capability for the degradation of some pesticides such as malathion, chlorpyrifos, dimethoate, benomyl, thiram, oxyflurofen, lindane, endosulfan pendimethalin, atrazine, and azoxystrobine (Ishag et al, 2017(Ishag et al, , 2016Elsalahi et al, 2015;Abdurruhman et al, 2015;Shaer et al, 2013;Elhussein et al, 2011;Mohamed et al, 2011;Elsaid et al, 2009;Osman, 2006). Their degradation capability can be enhanced by many activators such as farm manure and synthetic fertilizers (Elsaid et al, 2009).…”

Section: Fenthionmentioning

confidence: 99%

Biodegradation of fenthion and temphos in liqud media by Bacillus safensis isolated from pesticides polluted soil in the Sudan

Abdelbagi¹,

Wady²,

Ishag³

et al. 2018

Afr. J. Biotechnol.

View full text Add to dashboard Cite

The objective of this study was to evaluate the capability of the bacteria Bacillus safensis strain FO-36b T isolated from pesticide-polluted soil in degrading fenthion and temphos in mineral salt media (MSM). Fenthion and temphos were incubated with the isolated bacteria. Samples were drawn at 0, 3, 7, 14, and 30 days to analyze residual fenthion and temphos content with gas chromatography (GC) and high-performance liquid chromatography (HPLC), respectively. The loss of the initial pesticide concentration (400 mg/L) over time was determined and used to compute the half-lives using a biphasic model. Gas chromatography-mass spectrometry (GC-MS) was used to identify the major metabolites as well as to reconfirm the identity of starting material (fenthion). The results showed that the bacterium was still viable at the end of each incubation period. The biodegradation of fenthion and temphos followed a biphasic model. The half-lives of fenthion in the first and in the second phase were 0.29 and 3.69 days, respectively, whereas the corresponding values for temphos were 0.11 and 1.15 days. Only one metabolite "iso-fenthion" (O, S-dimethyl O-[3-methyl-4-(methylthio)phenyl] phosphorothioate) was detected in fenthion culture, while no metabolites were detected in temphos culture. Based on the halflives, this bacterium was able to degrade temphos at a faster rate than fenthion.

show abstract

Degradation of Oxyfluorfen Herbicide by Soil Microorganisms Biodegradation of Herbicides

Cited by 65 publications

References 19 publications

Influence of Olive Oil Mill Waste Amendment on Fate of Oxyfluorfen in Southern Spain Soils

Influence of Olive Oil Mill Waste Amendment on Fate of Oxyfluorfen in Southern Spain Soils

Effect of Soil Fumigation on Degradation of Pendimethalin and Oxyfluorfen in Laboratory and Ginger Field Studies

Biodegradation of fenthion and temphos in liqud media by Bacillus safensis isolated from pesticides polluted soil in the Sudan

Contact Info

Product

Resources

About