Responses of Soil Microorganisms and Enzymatic
Activities to Azoxystrobin in Cambisol

Wang, Fenghua; Li, Xiaoying; Zhu, Lusheng; Du, Zhongkun; Zhang, Cheng; Wang, Jun; Wang, Jinhua; Lv, Dongdong

doi:10.15244/pjoes/81086

Cited by 26 publications

(16 citation statements)

References 39 publications

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“…This variable results of two different treatment pairs on alkaline phosphatase might be explained by primarily different mechanisms that pesticide degradation products were responsible for inhibition to alkaline phosphatise (T2 as collated with T1) or the shift in the composition of the soil microbial community contributed to the increment in the activity of alkaline phosphatase related to phosphorous bio-availability (T4 as collated with T3) [40] . The stability of urease between two different treatment pairs might imply that this enzyme had not any role in the degradation pathway of the fungicides or no specific substrates in the currently contaminated soil ecosystems, which was similar to the results of Moreno et al [41] on the activities of soil urease affected by different concentration atrazine with different incubation time and Du et al [42] on the same enzyme activities affluenced by mesotrione of different doses at different time interval, but also there existed some cases on the variable activities of urease influenced by pesticides with different concentrations at different time points [43,44] . The higher activity of catalase for T4 attributed not only to the activity of soil microbial microflora, but also contribution of plant root stressed by pathogen Fusarium oxysporum, which help plant overcome the detrimental environment for surviving.…”

Section: Resultssupporting

confidence: 87%

Effects of Fenaminosulf on Growth of Pepper (Capsicum annuum L.), Microbial Communities and Enzymatic Activities of the Soil Infested with Fusarium oxysporum

Ren¹,

Wang²,

Cai³

2021

ijps

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Pepper wilt disease is common in the production of pepper in Guizhou province, China and fenaminosulf is often used to prevent its occurrences in agricultural practices. To estimate the effects of fenaminosulf on the sustainable pepper production, a pot experiment for 93 d was conducted to investigate the effects of fenaminosulf on the growth of pepper (Capsicum annuum L.), microbial communities and enzyme activities of the soil infested with phytopathogen Fusarium oxysporum. Four treatments: T1-seeding a week after pathogen inoculation in the soil, T2-seeding and soil drenching of fenaminosulf (at recommended dose) a week after pathogen inoculation in the soil, T3-pathogen inoculation in the soil at the first four to fiveleaf stage of pepper seedling and T4-soil drenching of fenaminosulf (at recommended dose) a week after pathogen inoculation in the soil at the first four to five-leaf stage of pepper seedling were established. The studies showed that T2 and T4 of fenaminosulf application obviously improved pepper survival rate, partially inhibited plant growth and development and significantly reduced soil bacterial quantity, but had no similar effects on the soil activities of catalase, urease and alkaline phosphatase. On the basis of stronger growth potential of plant, larger quantities of bacteria and actinomycetes and higher activities of catalase and alkaline phosphatase in the soil, T4 strategy might be reasonable for the production of pepper in the field where pepper wilt disease usually occurs.

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Section: Resultssupporting

confidence: 87%

Effects of Fenaminosulf on Growth of Pepper (Capsicum annuum L.), Microbial Communities and Enzymatic Activities of the Soil Infested with Fusarium oxysporum

Ren¹,

Wang²,

Cai³

2021

ijps

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“…In the spring time, a significant reduction in the abundance of both groups of microorganisms was probably the effect of herbicides [71], which were applied shortly before soil sampling. At full wheat vegetation, the abundance of bacteria showed a declining tendency, and the abundance of fungi was reduced following a fungicide treatment performed shortly before [72,73]. The reduction in the abundance of soil bacteria and fungi observed in our own studies was probably only short-term.…”

Section: Treatmentsmentioning

confidence: 49%

Using an Environment-Friendly Fertiliser from Sewage Sludge Ash with the Addition of Bacillus megaterium

Jastrzębska

Kostrzewska

2019

Minerals

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Sewage sludge ash (SSA) is considered to be a valuable secondary raw material for the production of phosphorous fertilisers. This method of recycling may also be a solution to the problem posed by the growing amount of this waste. An innovative suspension fertiliser (SSAB) was produced from SSA and the phosphorus-solubilising bacteria Bacillus megaterium and was tested in a field experiment in the presence of spring wheat as the test plant in comparison to conventional fertilisers (superphosphate, phosphorite). Two variants of plant protection were also adopted: full chemical plant protection (+PP) and no plant protection (−PP). Besides affecting yield, it was expected that SSAB would not worsen the state of the soil environment. This paper presents SSAB effect on soil moisture and temperature, soil pH, content of toxic elements (As, Cd, Cr, Ni and Pb) in the soil, abundance of heterotrophic bacteria and fungi and the occurrence of earthworms. SSAB did not affect the tested soil characteristics when applied in reasonable doses. Plant protection had an individual effect on soil properties but did not modify the fertiliser action. SSAB may be a potential substitute for P fertilisers produced from non-renewable raw materials in times of shortage. Further long-term research is recommended to confirm these findings.

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“…While some studies reported azoxystrobin reduced microbial diversity by inhibiting the growth of a number of bacteria and fungi in soil, [64][65][66] particularly its target pathogens, Deuteromycetes, Ascomycetes, Basidiomycetes and Oomycetes, 37 others have suggested that the fungicide had little to no significant effect on soil microbial communities. [67][68][69] Such contrasting conclusions are likely attributed to differences in the soil properties, fungicide doses and application methods used in each study.…”

Section: Resultsmentioning

confidence: 95%

Impacts of Porous Silica-Nanoencapsulated Pesticide Applied to Soil on Plant Growth and Soil Microbial Community

Bueno

Wang

Harrisson

et al. 2021

Preprint

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Porous silica nanocarriers have the potential to improve agricultural crop productivity. However, the impacts of nanoencapsulated pesticides on soil health and plant growth, and how they compare with conventional pesticide have not been systematically elucidated. In this study, we investigated how applying azoxystrobin encapsulated in porous hollow SiO2 nanocarriers to agricultural soil impacted the soil microbial community and plant development, using Solanum lycopersicum grown in the laboratory in soil microcosms. The data show that plant growth was heavily inhibited by the non-encapsulated pesticide treatment compared to that with encapsulated pesticide yielding 3.85-fold less plant biomass, while the soil microbial community experienced few to no changes regardless of the treatment. There was a 2.7-fold higher azoxystrobin uptake per unit dry plant biomass after 10 days of exposure for the non-encapsulated pesticide treatment when compared to that of nanoencapsulated pesticide, but only 1.5-fold increase in total uptake. After 20 days of exposure, however, the total uptake and uptake per unit of dry biomass were 3-fold and 10-fold higher, respectively, for the nanopesticide treatment. The differences in uptake can be attributed to phytotoxicity caused by the high the bioavailability of the non-encapsulated pesticide. The nanocarrier promoted slow release of the pesticide over days, which prevented phytotoxicity, and allowed healthy plant growth.

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Responses of Soil Microorganisms and Enzymatic Activities to Azoxystrobin in Cambisol

Cited by 26 publications

References 39 publications

Effects of Fenaminosulf on Growth of Pepper (Capsicum annuum L.), Microbial Communities and Enzymatic Activities of the Soil Infested with Fusarium oxysporum

Effects of Fenaminosulf on Growth of Pepper (Capsicum annuum L.), Microbial Communities and Enzymatic Activities of the Soil Infested with Fusarium oxysporum

Using an Environment-Friendly Fertiliser from Sewage Sludge Ash with the Addition of Bacillus megaterium

Impacts of Porous Silica-Nanoencapsulated Pesticide Applied to Soil on Plant Growth and Soil Microbial Community

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