Enhanced biodegradation of nematicides after repetitive applications and its effect on root and yield parameters in commercial banana plantations

Moens, T.; Araya, Mario; Swennen, Rony; Waele, Dirk De

doi:10.1007/s00374-004-0726-6

Cited by 30 publications

(25 citation statements)

References 15 publications

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“…In tomato growing soils of Australia a similar observation has been reported (Stirling et al 1992). Biodegradation of fenamiphos in Musa cultivation from Costa Rica has been previously described (Moens et al 2004). Enhanced fenamiphos biodegradation has similarly been observed in sweet corn-sweet potato-vetch rotation systems in USA (Johnson 1998).…”

Section: Introductionmentioning

confidence: 72%

Isolation and characterization of fenamiphos degrading bacteria

et al. 2010

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The biological factors responsible for the microbial breakdown of the organophosphorus nematicide fenamiphos were investigated. Microorganisms responsible for the enhanced degradation of fenamiphos were isolated from soil that had a long application history of this nematicide. Bacteria proved to be the most important group of microbes responsible for the fenamiphos biodegradation process. Seventeen bacterial isolates utilized the pure active ingredient fenamiphos as a carbon source. Sixteen isolates rapidly degraded the active ingredient in Nemacur 5GR. Most of the fenamiphos degrading bacteria were Microbacterium species, although Sinorhizobium, Brevundimonas, Ralstonia and Cupriavidus were also identified. This array of gram positive and gram negative fenamiphos degrading bacteria appeared to be pesticide-specific, since cross-degradation toward fosthiazate, another organophosphorus pesticide used for nematode control, did not occur. It was established that the phylogenetical relationship among nematicide degrading bacteria is closer than that to non-degrading isolates.

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Section: Introductionmentioning

confidence: 72%

Isolation and characterization of fenamiphos degrading bacteria

et al. 2010

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“…This kind of treatment has been developed to provide a methodology that is safer and more economical than conventional treatments, and to avoid additional damage to the environment. Biological processes have been used to treat wastes and sites polluted with pesticides (Moens et al 2004;Khan et al 2004;Yair et al 2008). Biodegradation of these pesticides provides a cheap and efficient solution for their final disposal or for the treatment of agricultural soils, contaminated water, or polluted ecosystems (Yair et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Removal of methyl parathion and tetrachlorvinphos by a bacterial consortium immobilized on tezontle-packed up-flow reactor

2011

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A tezontle-packed up-flow reactor (TPUFR) with an immobilized bacterial consortium for biological treatment of methyl-parathion and tetrachlorvinphos was evaluated. These organophosphate pesticides are widely used in Mexico for insect and mite control, respectively. With the aim of developing a tool for pesticide biodegradation, four flow rates (0.936, 1.41, 2.19, and 3.51 l/h) and four hydraulic residence times (0.313, 0.206, 0.133, and 0.083 h) were evaluated in a TPUFR. In the bioreactor, with an operating time of 8 h and a flow of 0.936 l/h, we obtained 75% efficiency in the removal of methyl-parathion and tetrachlorvinphos. Their adsorptions in the volcanic rock were 9% and 6%, respectively. It was demonstrated that the removal of pesticides was due to the biological activity of the immobilized bacterial consortium. We confirmed the decrease in toxicity in the treated effluent from the bioreactor through the application of acute toxicity tests on Eisenia foetida. Immobilization of a bacterial consortium using tezontle as a support is innovative and an economical tool for the treatment of mixtures of organophosphorus pesticide residues.

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“…Our studies are further supported by the findings of Karpouzas et al (2004b), who demonstrated that enhanced degradation of cadusafos developed after seven annual application of the nematicide in the preceding years. Similar results were obtained by Moens et al (2004), who reported that repeated applications of cadusafos did not cause its rapid microbial degradation unlike carbofuran, ethoprophos and fenamiphos, which were all rapidly degraded by soil microflora in five consecutive applications every 4 months in a banana plantation.…”

Section: Discussionmentioning

confidence: 99%

Nematicidal efficacy, enhanced degradation and cross adaptation of carbosulfan, cadusafos and triazophos under tropical conditions

Meher

Gajbhiye

Singh

et al. 2010

Nematol

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Nematicides need to be applied in each cropping season but repetitive applications can reduce their persistence and efficacy due to the unpredictable phenomena of enhanced biotransformation and cross adaptation. Experiments were conducted to ascertain the number of times the nematicides carbosulfan, cadusafos and triazophos can be applied effectively in the field. Incubation studies checked their degradation rates and cross adaptation and bioassays assessed their efficacy against Meloidogyne incognita infecting Solanum lycopersicum. Monitoring nematode populations at the middle of seven consecutive tomato crops following nematicidal treatments at a recommendable rate of 1.0 kg a.s. ha −1 revealed a linear decrease in efficacy with successive seasons. The chemicals remained effective up to the fourth application when 53-62% reduction of M. incognita in soil was still achievable, which decreased significantly to 14-33% by the seventh application. The nematicides were more effective against endoparasitic (M. incognita and Rotylenchulus reniformis) than ectoparasitic (Helicotylenchus dihystera, Hoplolaimus indicus and Tylenchorhynchus vulgaris) nematodes. Bioassays revealed 13-18% more invasions of second-stage juveniles of M. incognita into roots of tomato grown in soil pre-treated seven times with nematicide than in similar soil with no history of nematicide use; invasion and soil population were positively correlated. Root galling of field-grown tomato increased from the first to the seventh application. In bioassays, tomato root galling was greater in unsterilised field soil (1.4-2.1) than in similar soil/sterilised soil (1.0) compared with 2.4-2.9 in untreated control soil. The decrease in efficacy was attributable to accelerated microbial degradation of nematicides due to repeated use in each cropping season. Carbosulfan, cadusafos and triazophos exhibited a half-life (t 1/2 ) of 14, 20 and 27 days in soil with no history of nematicide use, whereas the t 1/2 was 6, 13 and 9 days in soil pre-treated seven times with nematicides and 28, 28 and 32 days in unsterilised soil, respectively. In cross adaptation studies, carbosulfan exhibited a t 1/2 of 7-9 days in soil pre-treated seven times with cadusafos and triazophos. The t 1/2 of cadusafos (22 days) was not affected in carbosulfan-treated soil but was affected (13 days) in triazophos-treated soil. Triazophos had a t 1/2 of 20 days in carbosulfan-treated soil and a t 1/2 of 8 days in cadusafos-treated soil. These results indicate that carbosulfan, cadusafos and triazophos can be applied effectively to the same field at least four times without decrease in efficacy due to accelerated biotransformation. Rotation of nematicide from different groups can be used in long-term nematode management strategies to avoid accelerated degradation and/or cross adaptation.

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Enhanced biodegradation of nematicides after repetitive applications and its effect on root and yield parameters in commercial banana plantations

Cited by 30 publications

References 15 publications

Isolation and characterization of fenamiphos degrading bacteria

Isolation and characterization of fenamiphos degrading bacteria

Removal of methyl parathion and tetrachlorvinphos by a bacterial consortium immobilized on tezontle-packed up-flow reactor

Nematicidal efficacy, enhanced degradation and cross adaptation of carbosulfan, cadusafos and triazophos under tropical conditions

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