Carbono, nitrogênio e fósforo microbiano do solo sob diferentes coberturas em pomar de produção orgânica de maçã no sul do Brasil

Almeida, Diego Tolotti de; Filho, Osmar Klauberg; Felipe, Aline Franciane; Almeida, Henrique Cesar

doi:10.1590/s0006-87052009000400028

Cited by 7 publications

(6 citation statements)

References 16 publications

(11 reference statements)

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“…The cellulose value (%) was obtained in Almeida et al (2009), Gonçalves et al (2007, and Reddy and Yang (2009) and crude protein value (%) in Pereira et al (2000), Santos et al (2004), and Maheri-Sis et al (2011), respectively, for sugarcane, Brachiaria, and soybean residues.…”

Section: Soil Sampling and Analysismentioning

confidence: 90%

“…This temperature is appropriate for microbial activity (Stanford et al 1973) since the temperature and humidity of the soil contribute to the increase in soil biological activity (Almeida et al 2009). …”

Section: Soil Incubationmentioning

confidence: 99%

“…(1)Almeida et al 2009; (2) Reddy and Yang 2009; (3) Maheri-Sis et al 2011; (4) Costa et al 2013; (5) Pereira et al 2000; (6) Santos et al 2004; (7) …”

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confidence: 99%

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For how long does the quality and quantity of residues in the soil affect the carbon compartments and CO2-C emissions?

et al. 2016

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Purpose The mineralization/immobilization of nutrients from the crop residues is correlated with the quality of the plant material and carbon compartments in the recalcitrant and labile soil fractions. The objective of this study was to correlate the quality and quantity of crop residues incubated in the soil with carbon compartments and CO 2 -C emission, using multivariate analysis. Materials and methods The experiment was conducted in factorial 4 + 2 + 5 with three replicates, referring to three types of residues (control, sugarcane, Brachiaria, and soybean), and two contributions of the crop residues in constant rate, CR (10 Mg ha −1 residue), and agronomic rate, AR (20, 8, and 5 Mg ha −1 residue, respectively, for sugarcane, soybean, and Brachiaria), evaluated five times (1, 3, 6, 12, and 48 days after incubation). At each time, we determined the CO 2 -C emission, nitrogen and organic carbon in the soil, and the residues. In addition, the microbial biomass and water-soluble, labile, and humic substance carbons fractionated into fulvic acids, humic acids and humin were quantified.Results and discussion Higher CO 2 -C emissions occurred in the soil with added residue ranging from 0.5 to 1.1 g CO 2 -C m −2 h −1 in the first 6 days of incubation, and there was a positive correlation with the less labile organic soil fractions as well as residue type. In the final period, after 12 days of soil incubation, there was a higher relation of CO 2 -C emission with carbon humin. The sugarcane and soybean residue (20 Mg ha −1 ) promoted higher CO 2 -C emission and the reduction of carbon residue. The addition of residue contributed to an 82.32 % increase in the emission of CO 2 -C, being more significant in the residue with higher nitrogen availability. Conclusions This study shows that the quality and quantity of residue added to soil affects the carbon sequestration and CO 2 -C emission. In the first 6 days of incubation, there was a higher CO 2 -C emission ratio which correlates with the less stable soil carbon compartments as well as residue. In the final period of incubation, there is no effect of quality and quantity of residue added to soil on the CO 2 -C emission.

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Section: Soil Sampling and Analysismentioning

confidence: 90%

Section: Soil Incubationmentioning

confidence: 99%

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For how long does the quality and quantity of residues in the soil affect the carbon compartments and CO2-C emissions?

et al. 2016

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“…Under the NT system, at a depth of 0-5 cm, the increase in MBP was approximately six times higher than that observed under CT Values ranged from 72 to 1520 g g -1 for MBC (Kaschuk et al, 2010), from 8 to 110 g g -1 for MBN (Balota et al, 2003;Almeida et al, 2009), and from 4 to 60 g g -1 for MBP (Rheinheimer et al, 2000) under various soil management conditions.…”

Section: Resultsmentioning

confidence: 94%

Soil microbial biomass under different tillage and levels of applied pig slurry

Balota

Machineski

Matos

2012

Rev. bras. eng. agríc. ambient.

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A B ST R A C TThe objective of this work was to evaluate the changes in microbial biomass C, N and P due to the application of pig slurry under different soil tillage systems. The experiment was established in a clayey Oxisol, Eutrophic Red Latossol in Palotina, PR. Different quantities of pig slurry (0, 30, 60 and 120 m 3 ha -1 year -1 ) were applied to the soil prior to the summer and winter crop season under conventional tillage (CT) and no tillage (NT), in three replicates. The area was cultivated with soybean (Glycine max L.) or maize (Zea mays L.) in the summer and wheat (Triticum sativum Lam.) or oat (Avena sativa L.) in the winter. The soil samples were collected in March and October of 1998 and 1999 at depths of 0-5, 5-10 and 10-20 cm. The soil tillage and pig slurry application influenced the microbial biomass C, N and P. The microbial biomass and the microbial activity presented high sensibility to detect changes in the soil due to tillage and the application of pig slurry. The soil microbial biomass and C mic /C org relation increased as the quantity of applied pig slurry increased. The metabolic quotient under CT increased with depth while under NT it decreased. The soil microbial biomass was enriched in N and P under NT and as the quantity of applied pig slurry increased.

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“…Additionally, the lower FCO 2 estimates for GH were likely the result of sugarcane residues on the soil surface, which have been shown to present a high carbon/nitrogen ratio (Almeida et al 2015), lignin (Costa et al 2013) and cellulose contents (Almeida et al 2009), and a lower crude protein concentration (Pereira et al 2000). These characteristics are important parameters in nutrient dynamics (Lal 2004) and can consequently reduce FCO 2 because of slow residue decomposition (Almeida et al 2014).…”

Section: Co 2 and O 2 Resultsmentioning

confidence: 99%

Ratio of CO2 and O2 as index for categorising soil biological activity in sugarcane areas under contrasting straw management regimes

et al. 2018

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This study was developed in a sugarcane area under contrasting management regimes defined by mechanical green harvesting (GH) and burning harvesting (BH) to test the hypotheses that the ratio of carbon dioxide (CO2) and oxygen (O2), known as the apparent respiratory quotient (ARQ), can be used to categorise soil biological activity. The study aimed to (i) examine the profile and relationship between the CO2 flux (FCO2) and the O2 flux (FO2) in a sugarcane area under mechanical harvesting with straw burning (BH) and mechanical harvesting with maintenance of straw (GH), considering soil moisture; (ii) and suggest the use of ARQ as an index for categorising the biological activity of soils. Our results showed consistently lower FCO2 for soil moisture in the range of 6.0–8.6% for both management regimes. The soil moisture increments triggered a decrease in FO2 and an increase in FCO2 and ARQ. The FCO2 and FO2 were positively correlated under BH. The BH yielded a cumulative CO2 emission of 53.68% higher than for GH. Overall, our findings revealed that soil moisture affected the O2 uptake and CO2 emission profile of soil, limiting O2 uptake and increasing CO2 releases for water-filled porosity below 70%. The GH management system, which incorporates sugarcane residues into the superficial layer of the soil, can help protect against soil erosion. The ARQ can be used as an index to categorise biological activity in soil, where ARQ values close to 1 can be considered a reflection of aerobic activity with balance between CO2 production and O2 consumption.

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Carbono, nitrogênio e fósforo microbiano do solo sob diferentes coberturas em pomar de produção orgânica de maçã no sul do Brasil

Cited by 7 publications

References 16 publications

For how long does the quality and quantity of residues in the soil affect the carbon compartments and CO2-C emissions?

For how long does the quality and quantity of residues in the soil affect the carbon compartments and CO2-C emissions?

Soil microbial biomass under different tillage and levels of applied pig slurry

Ratio of CO2 and O2 as index for categorising soil biological activity in sugarcane areas under contrasting straw management regimes

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