Population and microbial activity of the soil under an agro-ecological production system

Ferreira, Enderson Petrônio de Brito; Stone, L. F.; Martin-Didonet, Claudia Cristina Garcia

doi:10.5935/1806-6690.20170003

Cited by 28 publications

(24 citation statements)

References 8 publications

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“…Despite the no-effect of treatments on bacterial counts, studies have shown that different soil managements change the bacterial community, like stimulation under NT system, attributed to the maintenance of soil moisture (Ferreira et al, 2017). In general, bacteria dominate the microbial community in soils under high availability of nutrients, pH close to neutral, and (often) low levels of SOM (Van Der Heijden et al, 2008), as observed in this trial, in which the bacterial density was 1.5 times higher than fungi.…”

Section: ----------µG G -1 -------------% ---------------------------supporting

confidence: 51%

Chemical and Microbiological Attributes of Soil Under Different Management With Application of Swine Wastewater

Matos¹,

Filho²,

Andrade³

et al. 2018

JAS

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We evaluated the effects of biannual surface applications of swine wastewater (SWW) for 11 years, on chemical and microbiological attributes of a clay-textured soil under no-tillage (NT) or conventional tillage (CT) in Palotina, Paraná, Brazil. The treatments consisted of SWW doses (split into autumn-winter/spring-summer seasons) totaling 30, 60, 90 or 120 m 3 ha -1 year -1 , and a control without application, under CT or NT soil managements (SM). The experimental design was in randomized blocks with a split-plot arrangement and four replications, with SM in the plots and the doses of SWW in the subplots. After 11 years of applications of SWW, soil samples were taken at 0-10, 10-20, 20-40, and 40-60 cm of depth by the end of the winter cover crop, 44 days after the second biannual application. The treatments had only minor effects on the assessed chemical and microbiological soil properties. Available P and NO 3 --N increased with the doses of SWW at the two upper soil layers, whereas NT decreased NO 3 --N at 10-20 cm and increased P at 0-10 cm. Zn 2+ also increased with the doses of SWW, irrespectively the SM. NT increased the microbial biomass C (MBC) at 0-10 cm and 10-20 cm of soil depth, and the microbial quotient (qMic) at 0-10 cm. SM and SWW did not change the densities of heterotrophic bacteria, fungi, nitrite-oxidizers or ammonifiers at any soil depth. SM had single effects on organic C, MBC and qMic, whereas SWW had single effect only on Zn 2+ . Only available P and NO 3 --N were affected by both SM and SWW. The principal component analysis for chemical and microbiological attributes showed distinct groupings between CT and NT, and SWW rates at 0-10 cm and 10-20 cm of soil depths, the most influenced soil layers.

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Section: ----------µG G -1 -------------% ---------------------------supporting

confidence: 51%

Chemical and Microbiological Attributes of Soil Under Different Management With Application of Swine Wastewater

Matos¹,

Filho²,

Andrade³

et al. 2018

JAS

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“…Schreiter et al (2014) noted that the rhizosphere effect differed depending on the soil type and the plant growth developmental stage [39]. Other studies have also indicated that soil type or different agricultural practices are dominant factors influencing the rhizosphere microbial community [15,[40][41].…”

Section: Effects On Microbial Diversity Of Rhizosphere Soilmentioning

confidence: 99%

Effects of Long-Term Nitrogen Fertilizer Application on Rhizosphere Microorganisms under Different Soil Types

Wang

et al. 2019

Pol. J. Environ. Stud.

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The application of nitrogen fertilizers can improve the soil environment and influence the nutrition and quality of plants; there are also significant impacts of soil types on soil microbial communities. Research on the coupling effects between the rates of nitrogen fertilizer and the soil types on soil microbial metabolic activities under field conditions are currently lacking. In this study, we investigated the effect of five different N fertilization rates on three types of soils (meadow black, alluvial, and sandy soil) that were over 8-year-long planted maize. Illumina Miseq sequencing methods were used to characterize the soil microbial communities. Real-time PCR were adopted to calculate the relative abundance of N, C, and P-cycling functional microbial. Results indicated that different N rates can significantly change soil available nutrients and effectively reduce soil pH. The structure of the soil bacterial communities and diversity did not change after the fertilization of N during the study period. However, it can be found that soil types can substantially influence the structure of bacterial communities in soil, meanwhile, there was a significant correlation between pH and the composition of bacterial communities. Although the composition of the soil microbial community did not influence the fertilization rate of N, they can be indirectly affected by pH. There was significant difference (P<0.05) in the relative abundances of the nutrient cycling functional genes of the rhizosphere soil under different nitrogen levels, with nitrogen application and soil type the main influencing factors. The results showed that the excessive application of N fertilizer did not increase the yields of maize, thus it is important to investigate the reasonable fertilization rates of N fertilizer to protect the ecological balance of crop soils.

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“…In contrast, the T6, T9, T10 and T12 systems had the lowest values for β-glucosidase. It is ISSN 2166-0379 2020 important to note that intensely mechanized soils (T6 and T9) and with low organic matter (T12) tend to present less activity of this enzyme, since β-glucosidase reflects the condition of the organic matter and the soil decomposition processes (Ferreira, 2017). However, its lower activity in T10 may be due to the greater complexity of the vegetal residues that return to the soil in this system.…”

Section: Acid Phosphatase Arylsulfatase and β-Glucosidasementioning

confidence: 99%

Evaluating Pfeiffer Chromatography for Its Validation as an Indicator of Soil Quality

Graciano¹,

Matsumoto²,

Demétrio

et al. 2020

JAS

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Soil monitoring is fundamental to promote sustainability agroecosystems. It is necessary to consider indicators that bring together biological, physical, chemical and inter-relational attributes. Pfeiffer chromatography (PC) represents an important method for soil diagnosis, so the present study aims to analyze it in order to contribute to its validation. The soil samples of 12 production systems were evaluated in quintuplicate. The chromas were elaborated using Whatman no 4 filter paper, and the soil extract was performed by sodium hydroxide solution 1%. The results were obtained using revealing solution (AgNO3 0.5%) ascension by capillarity, and the chrome zones: central, internal, medium and external were correlated to soil penetration, chemical, biological and enzymatic parameters, respectively. Variance analysis was applied to the results that presented normal distribution and the means were compared by Scott-Knott test. T-test for Spearman correlations and principal component analysis were used to evaluate the correlations. There was negative correlation between the central zone and the average penetration resistance within the range 0-40 cm in depth. The internal, medium and external zones presented positive correlation with organic matter, carbon microbial biomass, and enzymatic activities, respectively. Quality standard features such as coloration, size and proportion of zones, presence of enzymatic clouds, peaks and radial lines were also confirmed. Thus, the standardization developed by this study contributed to validation of PC. Since PC is a low-cost and easy-to-perform method, it proves to be a useful tool allowing farmers autonomy to monitoring different agricultural systems, contributing to their production sustainable.

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Population and microbial activity of the soil under an agro-ecological production system

Cited by 28 publications

References 8 publications

Chemical and Microbiological Attributes of Soil Under Different Management With Application of Swine Wastewater

Chemical and Microbiological Attributes of Soil Under Different Management With Application of Swine Wastewater

Effects of Long-Term Nitrogen Fertilizer Application on Rhizosphere Microorganisms under Different Soil Types

Evaluating Pfeiffer Chromatography for Its Validation as an Indicator of Soil Quality

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