Biochar interferes with kiwifruit Fe-nutrition in calcareous soil

Sorrenti, Giovambattista; Masiello, Caroline A.; Toselli, Moreno

doi:10.1016/j.geoderma.2016.02.017

Cited by 36 publications

(21 citation statements)

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“…Limited Fe availability negatively affects leaf chlorophyll concentrations (Abadía and Abadía, 1993) and may reduce yield (Álvarez-Fernández et al, 2006). In a pot experiment, Sorrenti et al, (2016) discovered that kiwifruit showed Fe chlorosis symptoms in biochar-treated soils. With the exception of planted OS-treated soil, Fe concentrations were also significantly reduced in pore waters (p<0.05) indicating a reduction in Fe mobility and 13 hence availability for plant uptake (Fig S2).…”

Section: Micronutrient Mobility and Dissolved Organic Carbonmentioning

confidence: 99%

Effects of three different biochars on aggregate stability, organic carbon mobility and micronutrient bioavailability

Hartley

Riby

Waterson

2016

Journal of Environmental Management

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Abstract. Previous studies have demonstrated both beneficial and detrimental effects on soil properties from biochar incorporation. Several biochars, with different feedstock origins, were evaluated for their effectiveness at improving soil quality of a sandy agricultural soil. A pot trial was used to investigate aggregate stability and microbial activity, pore water trace element mobility and micronutrient concentrations in grain of spring wheat after incorporation of three biochars. The feedstocks for biochar production were selected because they were established UK waste products, namely oversize woody material from green waste composting facilities, and rhododendron and soft wood material from forest clearance operations. Biochars were incorporated into the soil at a rate of 5% v/v. Aggregate stability was improved following addition of oversize biochar whilst microbial activity increased in all treatments. Dissolved organic carbon (DOC) concentrations in soil pore water from biochartreated soils were raised, whilst micronutrient concentrations in wheat grain grown in the treated soils were significantly reduced. It was concluded that incorporation of biochar to temperate agricultural soils requires caution as it may result in reductions of essential grain micronutrients required for human health, whilst the effect on aggregate stability may be linked to organic carbon functional groups on biochar surfaces and labile carbon released from the char into the soil system.

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Section: Micronutrient Mobility and Dissolved Organic Carbonmentioning

confidence: 99%

Effects of three different biochars on aggregate stability, organic carbon mobility and micronutrient bioavailability

Hartley

Riby

Waterson

2016

Journal of Environmental Management

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“…Excess K in the soil can result in an antagonistic effect, at which K “blocks” the uptake of Ca and Mg ( Hawkesford et al., ). Accordingly, several authors have reported increased K uptake and reduced Ca and Mg uptake in different crops grown in biochar‐amended soils ( Butnan et al., ; Fox et al., ; Sorrenti et al., ). In this study, the PCA plots indicated the presence of such antagonistic effects in all three soil types as K vectors were clearly contrasted by Ca and Mg vectors (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, Sorrenti et al. () showed that oxidized Fe compounds were formed on the surfaces of biochar amended to soil consequently decreasing Fe bioavailability. On the other hand, Graber et al.…”

Section: Discussionmentioning

confidence: 99%

“…Potassium tends to accumulate in biochar and a large fraction of biochar K is typically available for plant uptake (Ippolito et al, 2015). Therefore, application of biochar can lead to a ''luxury'' uptake of excess K in different crops (Chan et al, 2007;Butnan et al, 2015;Fox et al, 2016;Sorrenti et al, 2016;Shepherd et al, 2017;Wang et al, 2018). WBC and SBC applied the soils with additional K corresponding to 433 mg kg soil -1 and 496 mg kg soil -1 , respectively.…”

Section: Biochar Induced Antagonistic Effects Of K On Ca and Mg Uptakementioning

confidence: 99%

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Biochar properties and soil type drive the uptake of macro‐ and micronutrients in maize (Zea mays L.)

Bornø

Müller-Stöver

Liu

2019

J. Plant Nutr. Soil Sci.

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The use of biochar in agriculture is a promising management tool to mitigate soil degradation and anthropogenic climate change. However, biochar effects on soil nutrient bioavailability are complex and several concurrent processes affecting nutrient bioavailability can occur in biochar‐amended soils. In a short‐term pot experiment, the concentration of N, P, K, S, Ca, Mg, Cu, Zn, Mn, B, Fe, and Na in the shoots of maize grown in three different soil types [sandy soil (S1), sandy loam (S2), and sandy clay loam (S3)] was investigated. The soils were either unamended or amended with two different biochars [wheat straw biochar (SBC) or pine wood biochar (WBC)] at two P fertilizer regimes (–/+ P). We used three‐way ANOVA and Principal Component Analyses (PCA) of transformed ionomic data to identify the effects of biochar, soil, and P fertilizer on the shoot nutrient concentrations. Three distinct effects of biochar on the shoot ionome were detected: (1) both biochars added excess K to all three soils causing an antagonistic effect on the uptake of Ca and Mg in maize shoots. (2) Mn uptake was affected by biochar with varying effects depending on the combined effect of biochar and soil properties. (3) WBC increased maize uptake of B, despite the fact that WBC increased soil pH and added additional calcite to the soil, which would be expected to reduce B bioavailability. The results of this study highlight the fact that the bioavailability of several macro and micronutrients is affected by biochar application to soil and that these effects depend on the combined effect of biochar and soils with different properties.

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“…When made from a plant biomass source, biochar is highly porous (Brewer et al, 2014) and absorbent (Yao, Gao, Zhang, Inyang, & Zimmerman, 2012). Although biochar's performance varies by biochar properties and application condition (e.g., soil and crop type; Joseph & Lehmann, 2009;Sorrenti, Masiello, & Toselli, 2016), meta-data analyses (Jeffery, Verheijen, Kammann, & Abalos, 2016;Nguyen et al, 2017;Omondi et al, 2016) have shown that using biochar can, on average, improve crop performance and enhance ecosystem services through long-term increases in soil carbon inventory (Spokas, 2010) and soil aggregate stability (Ajayi & Horn, 2017). Although biochar's performance varies by biochar properties and application condition (e.g., soil and crop type; Joseph & Lehmann, 2009;Sorrenti, Masiello, & Toselli, 2016), meta-data analyses (Jeffery, Verheijen, Kammann, & Abalos, 2016;Nguyen et al, 2017;Omondi et al, 2016) have shown that using biochar can, on average, improve crop performance and enhance ecosystem services through long-term increases in soil carbon inventory (Spokas, 2010) and soil aggregate stability (Ajayi & Horn, 2017).…”

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confidence: 99%

Policy support for biochar: Review and recommendations

et al. 2018

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Significant evidence has accumulated demonstrating that soil biochar amendment has many environmental benefits; however, adoption has been slow. This raises the question of how to align the environmental benefits with commercial motivations to drive more widespread implementation. Here, we examine the role that government policy can play in accelerating production and use at commercial scale. We identify three types of programs that can support biochar production: commercial financial incentives, nonfinancial policy support, and research and development funding. We also describe how these programs are currently used to support biochar production. For example, financial incentives can motivate immediate changes in business practices while nonfinancial policies can be important mechanisms to educate consumers and expand market demand. Research and development support can provide the necessary funding for early‐stage innovations that may one day become commercially viable options, even without other types of policy support. There are different risk–reward profiles for each policy mechanism, and these must be considered when evaluating a policy direction. Finally, we offer broad recommendations to the development of policy that maximizes the net benefits of biochar adoption. Key recommendations include improving policies that allow for the monetization of environmental benefits and avoided costs, recognizing soil as a resource through national preservation policy, and developing a broadly accepted set of product standards for biochar.

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Biochar interferes with kiwifruit Fe-nutrition in calcareous soil

Cited by 36 publications

References 53 publications

Effects of three different biochars on aggregate stability, organic carbon mobility and micronutrient bioavailability

Effects of three different biochars on aggregate stability, organic carbon mobility and micronutrient bioavailability

Biochar properties and soil type drive the uptake of macro‐ and micronutrients in maize (Zea mays L.)

Policy support for biochar: Review and recommendations

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