Fate of monocrotophos in the environment

Lee, Philip W.; Fukuto, Jon M.; Hernandez, Hector Lopez; Stearns, Stephen M.

doi:10.1021/jf00092a051

Cited by 46 publications

(28 citation statements)

References 5 publications

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“…Leaching of monocrotophos in soil columns has been reported. [2,7] Similarly, monocrotophos and its metabolites Nmethylacetoacetamide were observed to be mobile in soil TLC experiments. [8] Lee and Vanderlinden [9] observed 95-102% elution of monocrotophos and <5% retention in the soil columns subjected to artificial rains.…”

Section: Resultsmentioning

confidence: 99%

“…A direct correlation between pesticide adsorption and soil organic matter content and its inverse relationship with pesticide mobility is well documented. [2] Monocrotophos (dimethyl (E)-1-methyl-2-methylcarbamonoylvinyl phosphate) is an extensively used recommended insecticide for cotton crop in India. It tops the list of pesticide in demand (4149 MT, technical grade) in India for the year 1999-2000.…”

Section: Introductionmentioning

confidence: 99%

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Dissipation and Leaching of 14 C-Monocrotophos in Soil Columns under Subtropical Climate

Vig

Singh

Agarwal

2006

Journal of Environmental Science and Health, Part B: Pesticides

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Dissipation and leaching behavior of 14C-monocrotophos was studied for 365 days under field conditions using PVC cylinders. The first set (24 cylinders) was spiked with 1.0 microCi 14C-labeled monocrotophos along with 1.06 mg unlabeled monocrotophos to give a concentration of 2 mg kg -1 in the soil up to 15 cm depth. The second set (24 cylinders) received 14C-labeled monocrotophos along with other non-labeled insecticides viz., dimethoate @ 300 g a.i ha-1, deltamethrin @ 12.5 g a.i ha-1, endosulfan @ 750 g a.i ha-1, cypermethrin @ 60 g a.i ha-1, and triazophos @ 600 g a.i ha-1 at an interval of 15 days each as recommended for the cotton crop. 14C-monocrotophos dissipated faster, up to 45% in first 90 days in columns treated with only monocrotophos compared to 25% in columns that received monocrotophos along with other insecticides. However, both the columns showed similar residues 180 days onward. After 180 days of treatment, 46% radiolabeled residues were observed, which reduced up to 39.6% after 365 days. Leaching of 14C-monocrotophos to 15-30 cm soil layer was observed in both the experimental setups. In the 15-30 cm soil layer of both soil columns, up to 0.19 mg 14C-monocrotophos kg-1d. wt. soil was detected after 270 days.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dissipation and Leaching of 14 C-Monocrotophos in Soil Columns under Subtropical Climate

Vig

Singh

Agarwal

2006

Journal of Environmental Science and Health, Part B: Pesticides

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“…The use of pesticide-degrading microbial systems for the removal of pollutants from contaminated systems requires an understanding of the ecological requirements of degrading organisms. Sunlight significantly influences the degradation of monocrotophos in soil but not in water, indicating the involvement of components of soil in photolytic degradation (Dureja, 1989;Lee et al, 1990). The rate of hydrolysis of monocrotophos in soil and aqueous environments is pH dependent, and the halflives of monocrotophos are 131 days at pH 3, 26 days at pH 9 and 30 days at neutral pH at 25°C in the dark (Lee et al, 1990).…”

Section: Monocrotophosmentioning

confidence: 99%

Biodegradation of monocrotophos by bacteria isolated from soil

Srinivasulu¹,

Nilanjan²,

Chakravarthi³

et al. 2017

Afr. J. Biotechnol.

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Bacteria were isolated by enrichment culture technique from groundnut (Arachis hypogaea L.) soils and tested for their ability to degrade monocrotophos in mineral salts medium under aerobic conditions in the laboratory. Based on some of the morphological and 16S rRNA gene sequence analysis, the isolates were identified as Rhodococcus phenolicus strain MCP1 and Rhodococcus ruber strain MCP-2. The initial (0-day) recovery of monocrotophos in the culture medium was 94%; and by the end of 4 th day, about 21% of added monocrotophos was lost from the uninoculated medium. By the end of 1 st , 2 nd , 3 rd and 4 th day 13, 20, 24, 30% and 18, 33, 37, 45% of monocrotophos was degraded, by R. phenolicus strain MCP1 and R. ruber strain MCP-2 respectively, when the mineral salts medium was supplemented with monocrotophos as a C source. Simultaneously 12, 22, 26, 30% and 18, 26, 37, 40% of Nmethylacetoacetamide a metabolite of monocrotophos was recovered in the media inoculated with the R. phenolicus strain MCP1 and R. ruber strain MCP-2 respectively, during the same period. Decrease in the amount of monocrotophos with a concomitant increase in the level of N-methylacetoacetamide clearly indicates the degradation of parent compound.

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“…Some pesticide compounds, however, react with more than one of the three species of interest (H 3 O þ , H 2 O, and/or OH -), resulting in a pattern of pH dependence that may display an abrupt shift above or below a particular threshold pH value (Mabey and Mill, 1978;Schwarzenbach et al, 1993). Few compilations of these threshold parameters appear to be available for pesticide compounds (Mabey and Mill, 1978;Mabey et al, 1983;Roberts et al, 1993;Schwarzenbach et al, 1993), but individual values may sometimes be inferred from published data (e.g., Bank and Tyrrell, 1984;Burlinson et al, 1982;Cline and Delfino, 1989;Jeffers et al, 1989;Lee et al, 1990;Lightfoot et al, 1987;Ngabe et al, 1993;Weintraub et al, 1986;Zepp et al, 1975). Other results suggest that these threshold parameter values may vary with temperature (Lightfoot et al, 1987).…”

Section: Geochemical Environmentmentioning

confidence: 99%

“…Other work has demonstrated the extent to which E a values for pesticide hydrolysis vary, if at all, with pH (Dinelli et al, 1997(Dinelli et al, , 1998Lee et al, 1990;Smith and Aubin, 1993).…”

Section: Geochemical Environmentmentioning

confidence: 99%

The Geochemistry of Pesticides

Barbash

2014

Treatise on Geochemistry

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Fate of monocrotophos in the environment

Cited by 46 publications

References 5 publications

Dissipation and Leaching of 14 C-Monocrotophos in Soil Columns under Subtropical Climate

Dissipation and Leaching of 14 C-Monocrotophos in Soil Columns under Subtropical Climate

Biodegradation of monocrotophos by bacteria isolated from soil

The Geochemistry of Pesticides

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