Impact of quality and quantity of biochar and hydrochar on soil Collembola and growth of spring wheat

Reibe, Katharina; Götz, Klaus-Peter; Roß, Christina‐Luise; Döring, Thomas; Ellmer, Frank; Rueß, Liliane

doi:10.1016/j.soilbio.2015.01.014

Cited by 63 publications

(29 citation statements)

References 26 publications

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“…The addition of exogenous C into the soil may have neutral, decremental or incremental effects on the net primary production (NPP). Decremental effects may occur in different ways, such as, for instance, through inhibitory effects on seed germination and the initial seedling growth rates (Schimmelpfennig et al ., ; Fang et al ., ; Reibe et al ., ), but not any toxic effect was observed on the poplars in our study. The germination of weeds in the HC‐treated soil suggested the absence of any inhibitory effects also on herbaceous species.…”

Section: Discussioncontrasting

confidence: 62%

Hydrochar enhances growth of poplar for bioenergy while marginally contributing to direct soil carbon sequestration

et al. 2017

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Hydrothermal carbonization (HTC) has been proposed as an alternative method to pyrolysis for producing C-rich amendments for soil C sequestration. However, the use of hydrochar (HC) as soil amendment is still controversial due to the limited information on the potential benefits and trade-offs that may follow its application into soil. This study investigated the effects of HC starting from maize silage on plant growth in a 2-year controlled experiment on poplar for bioenergy and evaluated HC stability in soil by periodic soil respiration and isotopic (d 13 C) measurements. HC application caused a substantial and significant increase in plant biomass after one and two years after planting, and no evident signs of plant diseases were evident. Isotopic analysis on soil and CO 2 efflux showed that slightly less than half of the C applied was re-emitted as CO 2 within 12 months. On the contrary, considering that the difference in the amount of N fixed in wood biomass in treated and nottreated poplars was 16.6 AE 4.8 g N m À2 and that the soil N stocks after one year since application did not significantly change, we estimated that approximately 85% of the N applied with HC could have been potentially lost as leachate or volatilized into the atmosphere as N 2 O, in response to nitrification/denitrification processes in the soil. Thus, the permanence, additionality and leakage of C sequestration strategy using HC are deeply discussed.

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Section: Discussioncontrasting

confidence: 62%

Hydrochar enhances growth of poplar for bioenergy while marginally contributing to direct soil carbon sequestration

et al. 2017

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“…However, the residual tissue P contents were not significantly affected by N alone treatments in soil 2. On the contrary to the stated observations, results of recent studies revealed that application of biochar hardly impact P levels of crops (Kloss et al 2014;Reibe et al 2015). Earlier study by Gaskin et al (2010) also revealed that application of pine chip biochar did not significantly affect tissue P content of corn crop.…”

Section: Effect Of Biochar Application On Tissue Nutrient Concentrationsmentioning

confidence: 67%

Effect of biochar derived from faecal matter on yield and nutrient content of lettuce (Lactuca sativa) in two contrasting soils

et al. 2017

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Background: Faecal matter biochar offers an interesting value proposition where the pyrolysis process guaranties a 100% pathogen elimination, as well as significant reduction in transport and storage weight and volume. Therefore, to evaluate the effect of (1) biochar produced from dried faecal matter from household based septic tanks, and (2) N fertilizer, as well as their interaction on yield and nutrient status of lettuce (Lactuca sativa), lettuce was grown over two growing cycles under glasshouse on two contrasting soils amended once at the start with factorial combination of faecal matter biochar at four rates (0, 10, 20 and 30 t ha ) with 0, 25 and 50 kg N ha −1 in randomized complete block design.Results: For both soils, maximum fresh yields were recorded with biochar and combined application of biochar with N treatments. However, the greatest biochar addition effects (with or without N) with regard to relative yield were seen in less fertile sandy loam soil. We have also observed that faecal matter biochar application resulted in noticeable positive residual effects on lettuce yield and tissue nutrient concentrations in the 2nd growing cycle. For both soils, most nutrients analyzed (N, P, K, Mg, Cu and Zn) were within or marginally above optimum ranges for lettuce under biochar amendment. Conclusions:The application of faecal matter biochar enhances yield and tissue nutrient concentrations of lettuce in two contrasting soils, suggesting that faecal matter biochar could be used as an effective fertilizer for lettuce production at least for two growing cycles. Moreover, the conversion of the faecal matter feedstock into charred product may offer additional waste management benefit as it offers an additional (microbiologically safe) product compared to the more common co-composting.

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“…Values followed by the same letters are not statistically different. Reibe et al, 2015), and targeting below-ground macrofauna, such as earthworms (Chan et al, 2008;Topoliantz and Ponge, 2005;Liesch et al, 2010;Li et al, 2011). Our study is the first attempt to investigate the interactions between biochar soil amendments and aboveground soil macro-meso fauna in a field experiment.…”

Section: Discussionmentioning

confidence: 89%

Biochar–macrofauna interplay: Searching for new bioindicators

Castracani

Maienza

Grasso

et al. 2015

Science of The Total Environment

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Impact of quality and quantity of biochar and hydrochar on soil Collembola and growth of spring wheat

Cited by 63 publications

References 26 publications

Hydrochar enhances growth of poplar for bioenergy while marginally contributing to direct soil carbon sequestration

Hydrochar enhances growth of poplar for bioenergy while marginally contributing to direct soil carbon sequestration

Effect of biochar derived from faecal matter on yield and nutrient content of lettuce (Lactuca sativa) in two contrasting soils

Biochar–macrofauna interplay: Searching for new bioindicators

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