Dynamics of soil microbiological attributes under integrated production systems, continuous pasture, and native cerrado

Oliveira, Wesley Rodrigues de; Ramos, Maria Lucrécia Gerosa; Carvalho, Arminda Moreira de; Coser, Thais Rodrigues; Silva, Antônio Marcos Miranda; Lacerda, Manuel Messias; Souza, Kleberson Worslley de; Marchão, Robélio Leandro; Vilela, Lourival; Pulrolnik, K.

doi:10.1590/s0100-204x2016000900049

Cited by 28 publications

(28 citation statements)

References 27 publications

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“…The rapid decomposition within up to 90 days (Figure 3a) probably is results from the fragmentation of litter into smaller particles by physical agents, soil biota and the release of more soluble compounds such as sugars, starches and proteins, which are rapidly consumed by decomposing organisms (Swift et al, 1979;Oliveira et al, 2016). After this period, most of the more resistant or recalcitrant structures, rich in lignin, as well as in leaf veins and petioles, remain, decreasing the decomposition rate over time (Baumann et al, 2009;Hammel, 1997).…”

Section: Litter Decomposition Processmentioning

confidence: 99%

“…Thus, higher soil moisture, favors maintenance of environmental conditions for preservation of litter food web (Nouvellon et al, 2012). Biological diversity of macro and meso fauna, microorganisms, as well as better microbiological properties, can be used as indicators of more fast decomposition (Oliveira et al, 2016). Castro, Silva, Quirino, Bustamante, & Kruger (2016) also report that the abundance of soil microbial communities is profoundly affected by the considerable seasonal variation in water availability, which is characteristic of the Cerrado biome.…”

Section: Litter Decomposition Processmentioning

confidence: 99%

“…It is worth mentioning that decomposition is a dynamic process, driven by a rapid succession of organism communities conditioned by the substrate quality and environmental conditions (Oliveira et al, 2016;.…”

Section: Components Of the Remaining Littermentioning

confidence: 99%

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Litter Dynamics in Eucalyptus and Native Forest in the Brazilian Cerrado

Ribeiro¹,

Gatto²,

Oliveira³

et al. 2018

JAS

Self Cite

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The aim of this study was to evaluate the litter dynamics in the seasons of the year in three areas: Forest formation Cerradão (CE), and in two hybrids stands of Eucalyptus urophylla × E. grandis with different ages: E1 (34-58 months) and E2 (58-82 months). The produced litter, stored litter and the remaining mass was collected over 720 days. The evaluation of the remaining litter mass in each area was performed from the random distribution of 648 litter bags on the soil. Chemical analyzes (N, P, C) and the structural components of the cell wall (lignin, cellulose and hemicellulose) of the remaining litter were performed. The C of the litter stock was also determined. For both years of evaluation were observed higher biomass and C content in litter at E2. In contrast, the highest decomposition rate was for the CE, especially in the second year of evaluation (mass remaining at 720 days of 35%, 37% and 23% for E1, E2 and CE, respectively), attributed to the higher apparent liberation of N, soil moisture and biodiversity in the native area. Lignin contents increased, cellulose decreased, and hemicellulose remained stable throughout the 720 days. It was also observed an increase in the N and P concentration of the remaining mass and positive correlations among the remaining mass and the C:N and C:P ratios. The C:N ratio of litter was ≥ 76:1 at time 0 and ≥ 30:1 at 720 days for the three areas.

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Section: Litter Decomposition Processmentioning

confidence: 99%

Section: Litter Decomposition Processmentioning

confidence: 99%

See 1 more Smart Citation

Litter Dynamics in Eucalyptus and Native Forest in the Brazilian Cerrado

Ribeiro¹,

Gatto²,

Oliveira³

et al. 2018

JAS

Self Cite

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“…At 7, 14, 21, 28, 42, 63 and 105 days, soil basal respiration was approximately 2.3; 4.2; 3.2; 2.7; 1.7; 5.9 and 3.8 times lower in the soil without input of cover plant straw (control) than the highest value found in the treatments (Table 2). This can be explained because in the tropical climate soil microbial stimulation was highly sensitive to the quality and quantity of the organic residues incorporated to the soil (BOECHAT et al, 2012;NOVAK et al, 2017;OLIVEIRA et al, 2016). Moreover, the data show that high values for base respiration do not always indicate conditions of stress, as a high rate of respiration can, in the short term, mean efficient nutrient cycling, and in the long term, increase the soil microbial population in number and diversity improving the environmental services and the biological quality of this soil.…”

Section: Resultsmentioning

confidence: 99%

“…Conservationist agricultural practices aiming to maintain dead soil cover provide the highest carbon levels in humic fractions, influence mineralization and nutrient immobilization, increase water infiltration into soil, reduce surface runoff and erosion, and serve as a primary form of organic matter input that enhances soil biological activity, conserves moisture and moderates soil temperature (NOVAK et al, 2017;OLIVEIRA et al, 2016;SOUZA;FIGUEIREDO;SOUSA, 2016). Hence, soil management practices alter the biological communities in soil, in the dynamics of the transient and humified organic matter reservoirs and in cycling soil nitrogen and carbon (GUO et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Grasses and Legumes as Cover Crops Affect Microbial Attributes in Oxisol in the Cerrado (Savannah Environment) in the Northeast Region1

et al. 2020

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The cover crop straw may cause changes in the microbial activity and population, with repercussions on environmental changes and on the C and N dynamics, providing important information for the planning of adequate land use in the Cerrado. The objective of this study was to evaluate the effect of straw of cover crops on the soil microbial attributes and quality of organic matter. Experimental units consisted of 100 g of sieved soil placed in small plastic cups mixed with straw from cover plants. Treatments were distributed in a CRD, in a factorial scheme of 7 x 7 + 1, with seven types of straw, evaluated at 7, 14, 21, 28, 42, 63 and 105 days after incubation, and control without straw, with three replicates. The qCO2 ranged from 0.1 (Crotalaria spectabilis at 14 days) to 5.1% (Cajanus cajan ‘IAPAR 43’ at 42 days). The organic carbon and nitrogen reservoir are differently affected by straw of legumes and grasses on the dates. The incorporation of Brachiaria brizantha and Mucuna aterrima had a positive impact on the microbial attributes until the 21st incubation (qCO2, Cmic and Nmic), with little loss of carbon dioxide and growth of the microbial population. All the evaluated species presented a potential to be used in crop rotation systems, enabling no-tillage systems in the Cerrado of Piauí. However, it is recommended to select species according to specific purposes. Thus, the use of cover crops is an important tool for increasing the biological quality of Brazilian northeastern cerrado soils.

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Intercropping prairie cordgrass with kura clover had little effect on soil biogeochemistry

Varikuti,

Bansal,

et al. 2024

Soil Science Soc of Amer J

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Intercropping kura clover (Trifolium ambiguum) (KC) with prairie cordgrass (Spartina pectinata) (PCG) has great potential for biofuel feedstock on marginal lands. This study evaluated the impacts of 10‐year PCG‐KC intercropping and PCG monoculture fertilized with different nitrogen (N) rates of granular urea (five treatments: PCG‐KC, PCG‐0N, PCG‐75N, PCG‐150N, and PCG‐225N) on soil biogeochemical properties: (i) in the surface soil (0‐ to 10‐cm depth) at three different sampling times during the crop growing season: spring (April, pre‐emergence), summer (June, active growth), and fall (November, post‐harvest); and (ii) at different soil depths (0–5, 5–15, 15–30, 30–45, and 45–60 cm) (only total carbon (C) and N) in fall 2021. All soil biogeochemical parameters were higher during summer as compared to spring and/or fall, except urease activity, ammonium‐N, microbial biomass C and N, and fluorescein diacetate (FDA). On average over the sampling times, PCG‐KC had significantly higher β‐glucosidase activity and hot‐water extractable organic N than PCG‐0N; but no significant difference between PCG‐KC and N‐fertilized PCG. Cold‐water extractable organic N was significantly lower than the highest N rate, but not significantly different from PCG‐0N and lower N rate treatments. Urease activity under PCG‐KC treatment was double that of PCG‐0N and PCG‐75N; FDA was higher in PCG‐KC than all monocultures. No treatment effect was found on soil total C and N, except that they decreased with depth. Overall, intercropping PCG‐KC showed some benefits in terms of promoting soil biogeochemical properties during crop growth periods, having lower residual reactive N in the soil, and maintaining biomass yield and quality on marginal lands.

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Dynamics of soil microbiological attributes under integrated production systems, continuous pasture, and native cerrado

Cited by 28 publications

References 27 publications

Litter Dynamics in Eucalyptus and Native Forest in the Brazilian Cerrado

Litter Dynamics in Eucalyptus and Native Forest in the Brazilian Cerrado

Grasses and Legumes as Cover Crops Affect Microbial Attributes in Oxisol in the Cerrado (Savannah Environment) in the Northeast Region1

Intercropping prairie cordgrass with kura clover had little effect on soil biogeochemistry

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