Soil microbiological attributes under summer/winter crops rotation in a no-tillage system

Borges, Clóvis Daniel; Corá, José Eduardo; Barbosa, José Carlos; Nahas, Ely

doi:10.1080/03650340.2012.725938

Cited by 5 publications

(5 citation statements)

References 58 publications

(77 reference statements)

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“…These microorganisms are the main agents responsible for GHG production, being highly responsive to any change in the environment. Thus, processes that result in GHG emissions depend directly on the functional diversity and structure of soil microbial communities 82 , 83 .…”

Section: Resultsmentioning

confidence: 99%

“…Microorganism populations play an essential role in recycling soil chemical elements by controlling the dynamics of the decomposition and stabilization of carbon 85 and, consequently, spatiotemporal variability patterns of FCO 2 into the atmosphere. Moreover, the functional diversity and structure of soil microbial communities are of particular importance for soil functioning as an ecosystem 82 , 83 . In this sense, the pmo A gene has been widely used to detect the presence of methanotrophic bacteria in the soil because they have the ability to use methane as the sole source of carbon and energy and hence play an important role in the global carbon cycle, being potential biodegrading agents 86 .…”

Section: Resultsmentioning

confidence: 99%

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Soil CO2 emission and soil attributes associated with the microbiota of a sugarcane area in southern Brazil

Moitinho

Teixeira

Bicalho

et al. 2021

Sci Rep

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The spatial structure of soil CO2 emission (FCO2) and soil attributes are affected by different factors in a highly complex way. In this context, this study aimed to characterize the spatial variability patterns of FCO2 and soil physical, chemical, and microbiological attributes in a sugarcane field area after reform activities. The study was conducted in an Oxisol with the measurement of FCO2, soil temperature (Ts), and soil moisture (Ms) in a regular 90 × 90-m grid with 100 sampling points. Soil samples were collected at each sampling point at a depth of 0–0.20 m to determine soil physical (density, macroporosity, and microporosity), particle size (sand, silt, and clay), and chemical attributes (soil organic matter, pH, P, K, Ca, Mg, Al, H + Al, cation exchange capacity, and base saturation). Geostatistical analyses were performed to assess the spatial variability and map soil attributes. Two regions (R1 and R2) with contrasting emission values were identified after mapping FCO2. The abundance of bacterial 16S rRNA, pmoA, and nifH genes, determined by real-time quantitative PCR (qPCR), enzymatic activity (dehydrogenase, urease, cellulase, and amylase), and microbial biomass carbon were determined in R1 and R2. The mean values of FCO2 (2.91 µmol m−2 s−1), Ts (22.6 °C), and Ms (16.9%) over the 28-day period were similar to those observed in studies also conducted under Oxisols in sugarcane areas and conventional soil tillage. The spatial pattern of FCO2 was similar to that of macropores, air-filled pore space, silt content, soil organic matter, and soil carbon decay constant. No significant difference was observed between R1 and R2 for the copy number of bacterial 16S rRNA and nifH genes, but the results of qPCR for the pmoA gene presented differences (p < 0.01) between regions. The region R1, with the highest FCO2 (2.9 to 4.2 µmol m−2 s−1), showed higher enzymatic activity of dehydrogenase (33.02 µg TPF g−1 dry soil 24 h−1), urease (41.15 µg NH4–N g−1 dry soil 3 h−1), amylase (73.84 µg glucose g−1 dry soil 24 h−1), and microbial biomass carbon (41.35 µg C g−1 soil) than R2, which had the lowest emission (1.9 to 2.7 µmol m−2 s−1). In addition, the soil C/N ratio was higher in R2 (15.43) than in R1 (12.18). The spatial pattern of FCO2 in R1 and R2 may not be directly related to the total amount of the microbial community (bacterial 16S rRNA) in the soil but to the specific function that these microorganisms play regarding soil carbon degradation (pmoA).

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Soil CO2 emission and soil attributes associated with the microbiota of a sugarcane area in southern Brazil

Moitinho

Teixeira

Bicalho

et al. 2021

Sci Rep

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“…Enzyme activities in soil are important markers of soil fertility and are considered to be major factors contributing to overall soil quality and productivity [ 31 ]. Previous studies have shown that the extension of the fixed number of years of a crop leads to a reduction in the activity of some soil enzymes, and is an important barrier factor to productivity [ 32 ]. However, crop rotation increases soil enzyme activities by 10% to 86% compared with those of continuous cropping [ 33 ], similar to the effect of amending soils with organic manure [ 34 ].…”

Section: Discussionmentioning

confidence: 99%

The Effects of Cattle Manure and Garlic Rotation on Soil under Continuous Cropping of Watermelon (Citrullus lanatus L.)

Yang

Liu

et al. 2016

PLoS ONE

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Continuous cropping of watermelon (Citrullus lanatus L.) can lead to reduced yield and quality. We aimed to determine the effects of cattle manure addition and rotation with green garlic to improve yield and reduce disease incidence in watermelon and to examine the effects on the biological and chemical characteristics of the soil. Field experiments were performed during 2012–2014 on land previously under two years of continuous watermelon cropping in northwest China. We examined three treatment combinations: watermelon and garlic rotation, cattle manure application before watermelon planting, and combined cattle manure addition and crop rotation. Watermelon monoculture was retained as a control. Watermelon yield was significantly higher and disease incidence was lower in the treatments than the control. The populations of soil bacteria and actinomycetes and the bacteria/fungi ratio increased significantly and soil enzyme activities were generally enhanced under treatments. Available nutrients and soil organic matter contents were much higher under experimental treatments than the control. Results suggest both cattle manure application and garlic rotation can ameliorate the negative effects of continuous cropping. The combined treatment of cattle manure addition and green garlic rotation was optimal to increase yield, reduce disease incidence and enhance soil quality.

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“…Microbial biomass P also had a significant correlation with glutaminase at both soil layers, suggesting a strong interaction. The different observations may have reflected the fact that microbial biomass C, N, and P were all main but independent components, associated with their respective enzyme activities [40,95]. In addition, not all soil enzymes are exclusively derived from microorganisms.…”

Section: Correlations Between the Soil Attributes Testedmentioning

confidence: 99%

Long-Term Cropping Management Practices Affect the Biochemical Properties of an Alabama Ultisol

Watts,

He,

Yin

et al. 2024

Soil Systems

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Interest in improving the long-term sustainability of agricultural production systems has focused on identifying management practices that promote soil health. No tillage, cover cropping, and amending soils with broiler (Gallus gallus domesticus L.) litter are commonly adopted conservation practices that have been shown to improve soil fertility and crop yield. However, the overall influence of these conservation practices on soil health in the southeastern US are not well understood. Thus, a study was conducted to evaluate the influence of tillage, broiler litter (BL) applications, and cropping systems on soil biochemical properties. Soils were collected from field research plots under long-term management (>than 25 years of tillage, 15 years of broiler litter application, and 15 years of cropping system). Soil microbial biomass, C, N, and P, amidohydrolases, and dissolved organic matter (DOM) were evaluated as indicators of soil health. Adopting tillage and BL into the agricultural management system modified the biochemical parameters of the soils evaluated. Most of these modifications occurred in the 0–5 cm depth. Higher microbial biomass carbon (MBC; 85%) and nitrogen (MBN; 10%) and enzyme activities of asparaginase (65%) and glutaminase (70%) were observed in the 0–5 cm depth under no tillage (NT) compared to conventional tillage (CT), indicating greater biological activities were established in these soil ecosystems. Broiler litter applications increased microbial biomass N and activities of asparaginase and glutaminase in both soil depths. In addition, microbial biomass phosphorus (MBP) was increased following BL application in the 0–5 cm depth. The results suggest that long-term management of NT and BL additions can improve the health of eroded southeastern US soils by altering the soil biochemical parameters.

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Soil microbiological attributes under summer/winter crops rotation in a no-tillage system

Cited by 5 publications

References 58 publications

Soil CO2 emission and soil attributes associated with the microbiota of a sugarcane area in southern Brazil

Soil CO2 emission and soil attributes associated with the microbiota of a sugarcane area in southern Brazil

The Effects of Cattle Manure and Garlic Rotation on Soil under Continuous Cropping of Watermelon (Citrullus lanatus L.)

Long-Term Cropping Management Practices Affect the Biochemical Properties of an Alabama Ultisol

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