Changes in soil microflora in response to repeated applications of some pesticides

Duah-Yentumi, Stephen; Johnson, D. Barrie

doi:10.1016/0038-0717(86)90086-6

Cited by 60 publications

(29 citation statements)

References 30 publications

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“…Duah-Yentumi and Johnson (1986) [49] studied the effect of pesticides on soil microfl ora in arable soils that had received repeated applications of carbofuran and carbosulfan (insecticides), iprodione and vinclozolin (fungicides), and Methyl Chloro Phenoxy Acetic Acid (MCPA), simazine and paraquat (herbicides). Carbofuran at single and 5-fold application rates did not show any detectable detrimental effects on soil microbial biomass, but single application of carbosulfan caused a signifi cant biomass reduction.…”

Section: Soil Microbial Biomassmentioning

confidence: 99%

Impact of pesticides on soil microbiological parameters and possible bioremediation strategies

et al. 2008

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Section: Soil Microbial Biomassmentioning

confidence: 99%

Impact of pesticides on soil microbiological parameters and possible bioremediation strategies

et al. 2008

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“…They observed a decrease in microbial biomass with an increase in herbicide concentration on day 1 and decreased bacterial population as the concentration increased in sandy loam soil during first 9 days. Other scientists (Perucci and Scarponi, 1996), who experimented with remsulfuron, found a decrease in microbial biomass-C levels at 10 field rate and 100 time of field rate within the first 10 d. Elsewhere, it has been shown that repeated paraquat applications significantly lowered soil microbial biomass (Duah-Yentumi and Johnson, 1986). For this reason, the decrease of microbial biomass content was negatively correlated with dosage of herbicides.…”

Section: Discussionmentioning

confidence: 97%

Combined Effects of Chlorsulfuron and Bensulfuron-Methyl Herbicides on the Size of Microbial Biomass in a loamy sand soil

.¹,

Changyongk²,

Jianmingk³

et al. 2000

Pakistan J. of Biological Sciences

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A laboratory incubation experiment was conducted to examine the combined effects of chlorsulfuron and bensulfuron-methyl herbicides on the soil microbial biomass C (C mic ), N (N mic ) and their ratio in a loamy sand soil. The herbicides were added at four levels that were (C0B0) control, (C1B1) 0.01& 0.01, (C1B2) 0.01& 0.1 and (C1B3) 0.01&1.0 µg gG 1 soil of chlorsulfuron and bensulfuron-methyl, respectively. The soil was then incubated in the dark at 25±1EC. Determinations of C mic and N mic were carried out at 1, 3, 5, 7, 10, 15, 25 and 45 days after herbicide application. The results showed that combined applications of herbicides have significant effect on soil microbial biomass C and N, particularly during the first 15 days of incubation, which declined after 25 th day of incubation with C1B1 application rate. At 45 th day of incubation, the effect of herbicides decreased significantly in C1B2 and it become non-significant as compared with the control. While, C1B3 was still found to be significant as compared to the control and C1B1 but it was at par with C1B2. The results also revealed that with C1B1 treatment the biomass C/N ratio was significantly higher within first 3 days of incubation as compared with the control. But with C1B2, the ratio was significantly different within first 5 days of incubation. While with C1B3 the ratio was found significantly higher within first 25 days of incubation as compared with the control. Increasing the application rate resulted in increased inhibitory effect on the soil microbial biomass and also combined addition of herbicides caused negatively more effect than their single application.

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“…Repeated annual applications of paraquat up to 18 years was found to have escalating populations of aerobic & cellulolytic bacteria and actinomycetes, but diminished fungal populations [2]. Rai [3] reported that 15 years of annual application of 2,4-D decreased microbial biomass by 15-20%, while long-term applications of paraquat [2], trifluralin [4] and atrazine [5] were all reported to have a decline in microbial biomass.…”

Section: Introductionmentioning

confidence: 99%

“…Rai [3] reported that 15 years of annual application of 2,4-D decreased microbial biomass by 15-20%, while long-term applications of paraquat [2], trifluralin [4] and atrazine [5] were all reported to have a decline in microbial biomass. Fungicides of both systemic and non-systemic are reported to have an undesirable effect on the colonization of the roots of crop plants by arbuscular mycorrhizal (AM) fungi with reduced phosphorus uptake [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of cypermethrin, a pyrethroid insecticide on dynamics of soil microflora

Sethi¹,

Pradhan²,

Behera³

et al. 2015

J App Biol Biotech

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Changes in soil microflora in response to repeated applications of some pesticides

Cited by 60 publications

References 30 publications

Impact of pesticides on soil microbiological parameters and possible bioremediation strategies

Impact of pesticides on soil microbiological parameters and possible bioremediation strategies

Combined Effects of Chlorsulfuron and Bensulfuron-Methyl Herbicides on the Size of Microbial Biomass in a loamy sand soil

Effect of cypermethrin, a pyrethroid insecticide on dynamics of soil microflora

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