The degradation of carbofuran in paddy water and flooded soil of untreated and retreated rice fields

Siddaramappa, R.; Tirol, Agnes C.; Seiber, James N.; Heinrichs, E. A.; Watanabe, Iwao

doi:10.1080/03601237809372103

Cited by 44 publications

(20 citation statements)

References 8 publications

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“…Microbial activity has been found to be low or negligible in low-pH soils (Siddaramappa et al, 1978;Read, 1986). Increased breakdown of nematicides at higher pH values can be explained partly by the increased hydrolysis of the compounds concerned, as hydrolysis is more rapid under alkaline conditions.…”

Section: Soil Phmentioning

confidence: 99%

Accelerated Microbial Degradation of Nematicides in Vineyard and Orchard Soils

Hugo

Mouton²,

Malan

2016

SAJEV

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Accelerated microbial degradation (AMD) of organophosphate and carbamate nematicides is a phenomenon whereby biodegradation in the soil is increased, leading to a dramatically shortened persistence of nematicides. More intensified agriculture practices in South Africa in response to the future demand for food may lead to increased pest and disease pressure, which in turn will lead to more frequent pesticide application. The same principle applies to plant-parasitic nematode control practices, and the overuse and misuse will have a pronounced effect on the enhancement of AMD. With limited management options available, the responsible use of nematicides becomes more pertinent. Producers should be aware of the problems associated with multiple soil applications of organophosphates and carbamates against plant-parasitic nematodes. This article reviews factors contributing to the AMD of carbamate and organophosphate nematicides in soil and makes practical recommendations to avoid the occurrence of AMD in vineyard and orchards.

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Section: Soil Phmentioning

confidence: 99%

Accelerated Microbial Degradation of Nematicides in Vineyard and Orchard Soils

Hugo

Mouton²,

Malan

2016

SAJEV

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“…However, aside from the well-known relationship between pH and hydrolysis of carbamates (Aly and EI-Dib, 1972;Charnetski et al, 1977;Chapman and Cole, 1982), the work done on partitioning of carbofuran in a farm pond (Klaassen and Kadoum, 1979), the work done on the persistence of granular carbofuran in rice paddy water in the tropics Siddaramappa et al, 1978) and of technical-grade carbofuran in a model ecosystem (Yu et al, 1974), the fate of carbofuran in aquatic systems remains poorly understood (NRCC, 1979). A more thorough understanding of the fate of carbofuran in prairie ponds is needed in order to assess its effects in such ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Fate of carbofuran and its effects on aquatic macroinvertebrates in Canadian prairie parkland ponds

Wayland

Boag

1995

Ecotoxicology

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: A multipond study was conducted in 1986 to determine the fate of carbofuran and its effects on aquatic macroinvertebrates in alkaline, Canadian prairie parkland ponds. Four ponds were sprayed with carbofuran in late July; four other ponds served as controls. Sixteen hours after spraying, concentrations of carbofuran in the water column ranged from 9-32 μg l(-1). After 124 h, concentrations had declined to 3-12μg l(-1). Carbofuran partitioned into submersed aquatic plants, ranging from three to 46 times greater in the plants than in the surrounding water. Carbofuran was below detection limits in most sediment samples. Among the aquatic macroinvertebrates considered in this study, the crustacean Hyalella azteca and trichopteran larvae declined significantly in abundance following the application of carbofuran. Coenagrionidae and small chironomid larvae did not decline following carbofuran application. Hyalella azteca abundance remained relatively low in treatment ponds through to May 1987, while trichopteran larval abundance had recovered by August 1986. There were no readily apparent shifts in community structure in this study, although slight, disproportionate increases in Chironominae and Coenagrionidae in the treatment ponds following spraying may have resulted from such factors as reduced competition or a change in the size or composition of the food base.

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“…Adsorption to sediment results in an apparent reduction of pesticide in water, and its tight binding leads to less bioavailability with longer persistency, a mechanism that is more observable in hydrophobic pesticides. 46,95,96,108,152,153) Reduced degradation by adsorption to sediments or colloids has been shown by kinetic analysis on the biodegradation of endosulfan (7) in a river water-sediment system. 154) Alternatively, benthic microbes frequently enhance the biodegradation of pesticides by an order of magnitude.…”

Section: Sedimentmentioning

confidence: 99%

Aerobic microbial transformation of pesticides in surface water

Katagi

2013

J. Pestic. Sci.

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Aerobic transformation by microbial organisms is a dissipation process of pesticides in surface water, but the corresponding information is much less available as compared with their microbial degradation in soil. Bacteria freely floating in water or associated with suspended particles are the key microorganisms degrading pesticides; their species and populations, however, depend on sites and seasons. The various factors related to pesticide properties, experimental conditions and characteristics of surface water are involved in the complex control of microbial processes. Bottom sediment and macrophytes with associated biofilms not only act as sink for pesticides but also provide the habitat for both bacteria and fungi that degrade pesticides. More understanding of each factor is necessary to utilize laboratory biodegradation data for the refined assessment of pesticide behavior in surface water.

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The degradation of carbofuran in paddy water and flooded soil of untreated and retreated rice fields

Cited by 44 publications

References 8 publications

Accelerated Microbial Degradation of Nematicides in Vineyard and Orchard Soils

Accelerated Microbial Degradation of Nematicides in Vineyard and Orchard Soils

Fate of carbofuran and its effects on aquatic macroinvertebrates in Canadian prairie parkland ponds

Aerobic microbial transformation of pesticides in surface water

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