Microbial Versus Chemical Degradation of Atrazine in Soils

Skipper, H. D.; Gilmour, C. M.; Furtick, W. R.

doi:10.2136/sssaj1967.03615995003100050014x

Cited by 136 publications

(79 citation statements)

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“…Therefore, in the enzyme-treated soils, ATR was presumably transformed to HYA. HYA does not have the phytotoxic activity (28,29) and is more susceptible to microbial or chemical degradation than ATR (17,30,31). However, it has been shown to be persistent in some studies (32,33).…”

Section: Discussionmentioning

confidence: 99%

Influence of Microbial Inoculation (PseudomonasSp. Strain ADP), the Enzyme Atrazine Chlorohydrolase, and Vegetation on the Degradation of Atrazine and Metolachlor in Soil

Zhao

Arthur

Coats

2003

J. Agric. Food Chem.

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The concentrations of atrazine in the freshly added soils and the soils that had been incubated for 50 days significantly decreased 1 day after the addition of the enzyme atrazine chlorohydrolase or the soil bacterium Pseudomonas sp. strain ADP as compared with those in the uninoculated soils. Atrazine chlorohydrolase or ADP had no effect on the degradation of metolachlor. The half-lives of atrazine in the freshly added soils and in the aged soils after the treatment with atrazine chlorohydrolase or ADP markedly decreased as compared with those in the uninoculated soils. The half-lives of metolachlor in the aged soils were much longer than those of freshly added metolachlor. The percentage atrazine degraded in the freshly treated soils was much higher than that in the aged soils. This indicates that aging significantly decreased the bioavailability of atrazine. Vegetation significantly decreased the concentration of metolachlor. However, vegetation showed no effect on the degradation of atrazine. The concentrations of atrazine in the freshly added soils and the soils that had been incubated for 50 days significantly decreased 1 day after the addition of the enzyme atrazine chlorohydrolase or the soil bacterium Pseudomonas sp. strain ADP as compared with those in the uninoculated soils. Atrazine chlorohydrolase or ADP had no effect on the degradation of metolachlor. The half-lives of atrazine in the freshly added soils and in the aged soils after the treatment with atrazine chlorohydrolase or ADP markedly decreased as compared with those in the uninoculated soils. The half-lives of metolachlor in the aged soils were much longer than those of freshly added metolachlor. The percentage atrazine degraded in the freshly treated soils was much higher than that in the aged soils. This indicates that aging significantly decreased the bioavailability of atrazine. Vegetation significantly decreased the concentration of metolachlor. However, vegetation showed no effect on the degradation of atrazine.

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Section: Discussionmentioning

confidence: 99%

Influence of Microbial Inoculation (PseudomonasSp. Strain ADP), the Enzyme Atrazine Chlorohydrolase, and Vegetation on the Degradation of Atrazine and Metolachlor in Soil

Zhao

Arthur

Coats

2003

J. Agric. Food Chem.

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“…However; it contradicts aqueous solution without inorganic soil content. It proved the significance of inorganic soil contents for abiotic atrazine degradation (Skipper et al, 1967). Differing to these reports atrazine degraded chemically in the moderate acidic condition in the ground (Blumhorst and Weber, 1994).…”

Section: Atrazine Removal Technologiesmentioning

confidence: 82%

“…However, the Pseudomonas was involved in mono-dealkylation of atrazine. Adams and Thurman (1991) and Skipper (1967) reported that ethyl side chain mineralization of atrazine was much quicker than the isopropyl side chain.…”

Section: Biodegradation Of Atrazinementioning

confidence: 99%

Untitled

2017

RJLBPCS

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ABSTRACT:Increasing human population is putting enormous pressure on food supply and agriculture. To increase crop production, pesticides are used intensively. Atrazine (herbicide) which has proved economical in case of maize and sorghum for yield increase and price reduction for farmers. However, extensive use of atrazine in agriculture resulted in pollution and adverse effects on the environment.There is need to tackle atrazine contamination. This review explores the way for atrazine remediation.

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“…Of the two atrazine metabolites examined, desethylatrazine (DEA) was more frequently detected than desisopropylatrazine (DIA) in our bulk deposition samples (Table 1), which is similar to that found in other studies (Goolsby et al 1997, Van Dijk et al 1999, Schribner et al 2005. DEA is formed more readily than DIA in both soil and the atmosphere, and DEA is also more stable than DIA in the environment (Skipper and Volk 1972, Adams and Thurman 1991, Meijers et al 1995, Schribner et al 2005.…”

Section: Resultsmentioning

confidence: 99%

Bulk Deposition of Pesticides in a Canadian City: Part 1. Glyphosate and Other Agricultural Pesticides

Farenhorst

Andronak

McQueen

2015

Water Air Soil Pollut

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Winnipeg is a city in the Canadian Prairies with a population of about 600,000. Like many other cities and towns in this region of Canada, the city is surrounded by agriculture. Weekly bulk deposition samples were collected from May to September in 2010 and 2011 and analyzed for forty-three pesticides used in Prairie agriculture. Fourteen herbicides, five herbicide metabolites, two insecticides and two fungicides were detected with 98.5% of the samples containing chemical mixtures. Glyphosate is the most widely used pesticide in Prairie agriculture and accounted for 65% of the total pesticide deposition over the two years. Seasonal glyphosate deposition was more than five times larger in 2011 (182 mm rain) than 2010 (487 mm rain), suggesting increased glyphosate particulate transport in the atmosphere during the drier year.The seasonal deposition of ten other frequently herbicides was significantly positively correlated with the amount of herbicides applied both in and around Winnipeg (r=0.90, P<0.001) and with agricultural herbicide use around Winnipeg (r=0.63, P=0.05), but not with agricultural herbicide use province wide (p=0.23). Herbicides 2,4-D, dicamba, and mecoprop had known urban applications and were more consistently detected in samples relative to bromoxynil and MCPA whose frequency of detections decreased throughout August and September. The Canadian Water Quality Guidelines for irrigation water were frequently exceeded for both dicamba (75%) and MCPA (49%) concentrations in rain. None of glyphosate concentrations in rain exceeded any of the Canadian Water Quality Guidelines established for this herbicide.

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Microbial Versus Chemical Degradation of Atrazine in Soils

Cited by 136 publications

References 0 publications

Influence of Microbial Inoculation (PseudomonasSp. Strain ADP), the Enzyme Atrazine Chlorohydrolase, and Vegetation on the Degradation of Atrazine and Metolachlor in Soil

Influence of Microbial Inoculation (PseudomonasSp. Strain ADP), the Enzyme Atrazine Chlorohydrolase, and Vegetation on the Degradation of Atrazine and Metolachlor in Soil

Untitled

Bulk Deposition of Pesticides in a Canadian City: Part 1. Glyphosate and Other Agricultural Pesticides

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