Microbial Communities in Soil Cultivated with Muskmelon under Different Management Systems

Nascimento, Paula Gracielly Morais Lima do; Cruz, Beatriz Letícia Silva da; Dantas, Andréa Mirne de Macêdo; Freitas, Francisco Cláudio Lopes de; Ambrósio, Márcia Michelle de Queiroz; Júnior, Rui Sales

doi:10.1590/18069657rbcs20160130

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…The use of conservationist cultivation practices and maintaining residues influence the soil microclimate, the distribution and decomposition of crop residues, mineralization and immobilization of nutrients, besides the edaphic fauna structure in soil (CHENG et al, 2017;SILVA et al, 2018). These changes can alter the microbial activity and biomass of the soil, besides the structure of the microbial community in agricultural soils (NASCIMENTO et al, 2016). Thus, agricultural soil management practices may markedly affect microbial activity, the rate of organic matter rotation and, finally carbon and nitrogen cycling in soil (LI et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Microbial responses to doses of cover plant straw in cerrado piauiense oxisol

et al. 2020

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Carbon and nitrogen from the soil microbial biomass play a significant role in the rotation of C and N, and promote nutrient cycling. Thus, the objective of this study was to evaluate changes in the soil microbial biomass with growing doses of cover plant straw species. The cover plants cultivated in the cerrado biome region were incorporated an Oxisol Ustox. The straw of each cover plant was incorporated at doses of 0; 10; 20 and 30 Mg ha-1. The soil basal respiration was determined by incubating, after 21 days. The microbial biomass carbon and nitrogen were determined by the method the microwave irradiation. The microbial biomass carbon and nitrogen contents in extracts were determined by the wet combustion method and Kjeldahl-N. The metabolic quotient was calculated as the ratio between soil basal respiration rate and microbial biomass C, and the microbial quotient as the ratio between soil microbial biomass C and total carbon of soil. The soil microbial population measured by the attributes of quality responds to the addition of the of grass and legume straws incorporated to the soil; The treatments that cause the greatest stress to the microbial population, at 21 days, mediated by the metabolic quotient, are guandu-anão at a dose of 10 Mg ha-1; Guandu-anão and Guandu fava-larga at 20 Mg ha-1 and Brachiária at a dose of 30 Mg ha-1; The best result regarding microbial attributes of soil quality evaluated was observed with the incorporation of all doses of the straw of Crotalaria-ocroleuca.

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Section: Introductionmentioning

confidence: 99%

Microbial responses to doses of cover plant straw in cerrado piauiense oxisol

et al. 2020

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Pores distribution influences the soil microorganism's response to changes in temperature and moisture

Visconti-Moreno

Valenzuela-Balcázar

2023

EJSS

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Microorganisms are an essential fraction of soil organic matter, which presence and activity depend directly on soil physical conditions. This study aimed to address the effect of soil temperature and moisture under contrasting macroporosity conditions on soil biological properties. Soil physical-chemical characterization implicated the collection of composite samples and undisturbed surface soil samples (0 to 10 cm). Also, samples of undisturbed surface soil were extracted in 40 polyvinyl chloride cylinders of 18 cm diameter and 20 cm height for the arrangement of soil mesocosm as the experimental units of a completely randomized experiment with a 2x2x3 factorial arrangement. The experiment duration was 21 days, and the soil biological properties measured were microbial biomass (MB) and soil respiration (SR). Macroporosity showed a significant effect on MB, which indicates that aeration pore influences the number of microorganisms in the soil; for the SR, the macroporosity had a not significant effect. The temperature at the ranges established in the experiment did not significantly affect MB, whereas a highly significant effect of temperature over SR was observed. A highly significant effect of soil moisture was observed on MB and SR. Macroporosity, moisture, and temperature are determining factors in the presence of soil microorganisms, both directly and through the interaction between them. Herein the microorganisms have a wide range of thermal adaptation, and the effect of soil temperature can boost soil microorganisms. In turn, it was observed that the microorganisms present are significantly sensitive to the moisture deficit in soil.

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Microbial Communities in Soil Cultivated with Muskmelon under Different Management Systems

Cited by 2 publications

References 26 publications

Microbial responses to doses of cover plant straw in cerrado piauiense oxisol

Microbial responses to doses of cover plant straw in cerrado piauiense oxisol

Pores distribution influences the soil microorganism's response to changes in temperature and moisture

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