Impact on C and N dynamics of simultaneous application of pig slurry and wheat straw, as affected by their initial locations in soil

Aita, Celso; Recous, Sylvie; Cargnin, Regina Helena Osmari; Luz, Laura Patrícia da; Giacomini, Sandro José

doi:10.1007/s00374-011-0658-x

Cited by 23 publications

(22 citation statements)

References 28 publications

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“…With increased N availability resulting from SS addition in our study along with results from pig slurry in a study by Aita et al (2012), we expected an increase in straw C mineralization. With straw incorporation, soil contact is favored, which allows higher microbial accessibility to the C source.…”

Section: Carbon Mineralizationmentioning

confidence: 70%

“…Therefore, SS incorporated along with OS did not affect straw C mineralization. Aita et al (2012), under laboratory conditions, observed no effect of incorporated pig slurry on wheat C mineralization (C/N of 69).…”

Section: Carbon Mineralizationmentioning

confidence: 99%

“…With higher C accessibility, microbial N demand also increases, which, in this study, could be met by SS, once approximately 15 % of total N applied with SS was already in the mineral form (Table 1). The explanation of Aita et al (2012) for not observing the same effect with pig slurry (62 % of total N in mineral form), was that the microbial N need was met to a lesser extent by straw N, and to a higher extent by SOM mineralized N. Apparent C mineralization from organic materials, expressed in relation to added C to soil, shows a distinct pattern of C mineralization from OS and SS, mainly during the first 45 days after incubation initiation (Figure 2). For SS, C mineralization increased linearly during the first 45 days, emitting 86 % of total cumulative C mineralized at the end of the experiment (110 days).…”

Section: Carbon Mineralizationmentioning

confidence: 99%

“…This is due to the fact that crop residues normally have high C/N ratio levels (low N level). Under this condition, the mixture between N-rich SS and crop residues can result in SS-N immobilization by the microbial biomass during crop residues decomposition (Recous et al, 1995;Aita et al, 2012), causing a reduction in soil N availability. Therefore, the SS recommendation in this scenario must be adapted to improve its efficiency as N fertilizer.…”

Section: Introductionmentioning

confidence: 99%

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Carbon and Nitrogen Mineralization in Soil Combining Sewage Sludge and Straw

Giacomini

Simon

Aita

et al. 2015

Rev. Bras. Ciênc. Solo

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The combined incorporation of sewage sludge (SS) and oat straw (OS) to the soil can increase straw carbon mineralization and microbial nitrogen immobilization. This hypothesis was tested in two laboratory experiments, in which SS was incorporated in the soil with and without OS. One treatment in which only straw was incorporated and a control with only soil were also evaluated. The release of CO 2 and mineral N in the soil after organic material incorporation was evaluated for 110 days. The cumulative C mineralization reached 30.1 % for SS and 54.7 % for OS. When these organic materials were incorporated together in the soil, straw C mineralization was not altered. About 60 % of organic N in the SS was mineralized after 110 days. This N mineralization index was twice as high as that defined by Resolution 375/2006 of the National Environmental Council. The combined incorporation of SS and OS in the soil caused an immobilization of microbial N of 5.9 kg Mg -1 of OS (mean 3.5 kg Mg -1 ). The results of this study indicated that SS did not increase straw C mineralization, but the SS rate should be adjusted to compensate for the microbial N immobilization caused by straw.

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Section: Carbon Mineralizationmentioning

confidence: 70%

Section: Carbon Mineralizationmentioning

confidence: 99%

Section: Carbon Mineralizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Carbon and Nitrogen Mineralization in Soil Combining Sewage Sludge and Straw

Giacomini

Simon

Aita

et al. 2015

Rev. Bras. Ciênc. Solo

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“…However, in areas with high livestock density, manure production may outpace land available for application resulting in increases in manure application intensity and the potential for negative environmental impacts (i.e., release of excess nutrients or green house gases, accumulation of salts, growth of deleterious microorganisms). Application of slurry on land in these areas is often restricted and alternative disposal technologies are being evaluated (Aita et al, 2012;Key et al, 2011;Larney et al, 2007;Ten Hoeve et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Effect of turning frequency and season on composting materials from swine high-rise facilities

et al. 2015

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a b s t r a c tComposting swine slurries has several advantages, liquid slurries are converted to solids at lower moisture, the total volume and weight of material is reduced and the stabilized product is more easily transported off-site. Despite this, swine waste is generally stored, treated and applied in its liquid form. High-rise finishing facilities (HRFF) permit liquid slurries to be converted to solids which are partially decomposed underneath the HRFF and then finished in compost windrows. The purpose of this study was to evaluate the effect of turning frequency and ambient weather conditions on biological, physical and chemical properties of composted slurry-woodchip mixtures from HRFF. Compost trials were conducted in either fall (FT) or spring (ST) and piles were turned once or three times per week or upon compost temperature reaching 65°C. Physical, chemical and microbiological characteristics were measured over the course of 112 (FT) or 143 (ST) days of composting. Total carbon, total nitrogen (N) and inorganic N decreased in all piles. Ammonium decreased while nitrate increased in all piles (including unturned), but total N losses were greatest in piles turned more frequently during the ST. Microbial populations of nitrifiers were dominated by ammonia-oxidizing archaea (3.0 Â 10 3 -4.2 Â 10 6 cells g À1 compost) but ammonia oxidizing bacteria (below detection to 6.0 Â 10 5 cells g À1 compost) varied in response to turning and compost temperature; denitrifiers were present in high concentrations throughout the process. Swine HRFF materials composted well in windrows regardless of turning frequency and despite significant differences in starting materials and low initial C/N. Volume reduction, low moisture and low readily degradable organic matter suggest that the finished compost would have lower transportation costs and should provide value as a soil conditioner. Published by Elsevier Ltd.

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