Microbial Biomass and Carbon Mineralization in Agricultural Soils as Affected by Pesticide Addition

Kumar, Anjani; Nayak, A. K.; Shukla, Arvind Kumar; Panda, B.B.; Raja, R.; Shahid, Mohammad; Tripathi, Rahul; Mohanty, S.; Rath, Prakash Chandra

doi:10.1007/s00128-012-0538-6

Cited by 30 publications

(13 citation statements)

References 14 publications

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“…Many researchers have noted an increase in the number of microorganisms under the influence of herbicides. Moreover, according to the literature a large number of bacteria, especially from Pseudomonas genus have the ability to degradation of pesticides and the use of these xenobiotic as carbon sources [19]. The destruction of herbicides in the environment occurs via participation by the soil, epiphytic and endophytic bacteria, particularly by the principle of co-metabolism.…”

Section: Herbicidesmentioning

confidence: 99%

Specifics of pesticides effects on the phytopathogenic bacteria

Patyka

Buletsa

Pasichnyk

et al. 2016

Ecological Chemistry and Engineering S

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Abstract:The data concerning the effects of pesticides of different nature on the phytopathogenic bacteria was examined and summarized. Without extensive research on the mechanisms of interaction between pathogenic bacteria and pesticides in the literature review a similar message about microorganisms of soil and phyllosphere are included. The bacteria can be suppressed permanently by pesticides with a mechanism of action that universally affects biological processes in living systems. Long-term storage, ease of use and fast visible effect are the advantages of synthetic pesticides remedies. But chemical pollution, shifts in the balance of ecosystems, unpredictable effects of chemical pesticides on non-target objects are the drawbacks. Stimulation of resistance response in plants is unifying factor for all types of biopesticides. This is realized through localization of the pathogen during infection, blocking its further penetration, distribution and reproduction. The results of the study of effects of plant protection products on the phytopathogenic bacteria of main crops are described. Among all tested pesticides, thiocarbamate fungicides demonstrated significant inhibitory action on phytopathogens, but their effect may be neutralized by other constituents of multicomponent preparations. Triazole fungicides affect the causative agents of bacterioses of crops at a dose of more than 1% of the active substance in the nutrient medium. Insecticides and herbicides have little or no effect on phytopathogenic bacteria; however they can enhance morphological dissociations of some Pseudomonas strains, thereby increasing their ability to survive. The disadvantage of many biopesticides against phytopathogenic microorganisms is the difference between their efficacy in vitro and in vivo that is why the desired result is not achieved in field condition. In addition, biological pesticides often lose their activity causing the problem of constant search for new active antagonists. The fact that the sensitivity of phytopathogenic bacteria to pesticides is strain-dependent should be considered in practice, particularly, assessment of the antibacterial action of various preparations should not be limited to a single bacterial strain.

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Section: Herbicidesmentioning

confidence: 99%

Specifics of pesticides effects on the phytopathogenic bacteria

Patyka

Buletsa

Pasichnyk

et al. 2016

Ecological Chemistry and Engineering S

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“…However lesser availability of nitrogen, phosphorus and organic carbon in FA affects protein and amino acid metabolisms, disrupts energy flow in cells, growth and development as well as decrease resistance against plant diseases (Basu et al 2009;Yu et al 2013). At higher doses, FA can adversely affect soil biological properties (Kumar et al 2012;Nayak et al 2014). Several researchers (Pitchel and Hayes 1990;Garau et al 1991) reported that FA supplemented soil significantly reduced the microbial and enzymatic activities as well as process of N cycling such as nitrification and N mineralization.…”

Section: Introductionmentioning

confidence: 98%

Fly-ash augmented soil enhances heavy metal accumulation and phytotoxicity in rice (Oryza sativa L.); A concern for fly-ash amendments in agriculture sector

et al. 2015

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Fly-ash (FA) utilization in the agriculture sector is very common practice due to presence of beneficial elements required for plant growth. However, presence of excessive amount of toxic metals in FA may be serious concern for agriculture. In the present study, the effects of FA on soil health, plant growth, toxic metal accumulation and antioxidant responses were investigated in rice (Oryza sativa L.), grown on soil amended with 50 % FA in natural condition. FA application resulted in reduction in soil enzymatic activities viz., dehydrogenase, acid phosphatase, b-glucosidase and urease than garden soil (GS). FA amendments significantly decreased the root, shoot and panicle length and augmented sterility in rice. Interestingly, ICPMS analysis for metal accumulation revealed that the total accumulation of toxic metals, particularly Cd, Cr, Pb and As were 14-15 fold higher in roots and shoots and 4-20 fold higher in grains for the plants grown on FA amended soil than GS. The levels of nutrient elements viz., Mn, Co, Cu and Se were lesser in grains of FA treated soil than GS. Lipid peroxidation was increased in root and shoot of FA treated plants indicating oxidative stress. Activities of various antioxidant enzymes viz., SOD, APX, GPX, GR and their isozymes were correlated to each other and also increased against heavy metal induced toxicity. Human associated risk analysis revealed that the calculated maximum tolerable daily intake values for toxic metals (lg d -1 ) viz., Cr, As, Cd, Hg and Pb was beyond the safe limit in the rice grown in FA implicated soil. In conclusion, 50 % FA implication deteriorates the soil quality, rice production and elevates the toxic metals in grains, which may be a concern for safer rice consumption.

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“…[32] In the present study, there was a significant increase in MBC content with pendimethalin application initially after seven days of their respective application at all the three doses as compared to the untreated soil, that is, weedy check and hand-weeded control ( Table 2). This increasing trend of soil MBC continued till 30 days of application for HRE and RE and till 45 days for DRE but thereafter decreased gradually with time.…”

Section: Soil Mbcmentioning

confidence: 70%

Behaviour of pendimethalin and oxyfluorfen in peanut field soil: effects on soil biological and biochemical activities

Saha

Pipariya

Jain

et al. 2015

Chemistry and Ecology

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A field experiment was conducted to study the dissipation kinetics of herbicides pendimethalin and oxyfluorfen in black soil of peanut field at half recommended rate (HRE), recommended rate and double recommended rate as well as to assess their effects on soil microbial parameters and enzymatic activities. In addition, their role in the transformations and availability of some plant nutrients like nitrogen transformation (through ammonification and nitrification processes) and availability of phosphorous were also studied. Incorporation of these herbicides was found to stimulate the activity of soil microbial biomass carbon, fluorescein diacetate hydrolysing activity, alkaline phosphatase and ammonification rates, while dehydrogenase activity, acid phosphatase, nitrification rate and available phosphorous was adversely affected. However, urease remains almost unchanged except for little stimulation at later stages. Dissipation of pendimethalin and oxyfluorfen followed first-order reaction kinetics with half-life (T 1/2 ) of 13.7-20.1 and 21.5-27.4 days, respectively. Residues of both herbicides persisted up to 60 days in the soil at all the doses except 45 days for pendimethalin at HRE.

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Microbial Biomass and Carbon Mineralization in Agricultural Soils as Affected by Pesticide Addition

Cited by 30 publications

References 14 publications

Specifics of pesticides effects on the phytopathogenic bacteria

Specifics of pesticides effects on the phytopathogenic bacteria

Fly-ash augmented soil enhances heavy metal accumulation and phytotoxicity in rice (Oryza sativa L.); A concern for fly-ash amendments in agriculture sector

Behaviour of pendimethalin and oxyfluorfen in peanut field soil: effects on soil biological and biochemical activities

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