Dose-dependent Effect of Biochar as Soil Amendment on Reducing Copper Phytotoxicity and Mobility

Simms, Tatum; Chen, Hao; Mahato, Gena Ram

doi:10.1007/s41742-020-00293-y

Cited by 9 publications

(5 citation statements)

References 49 publications

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“…The alkaline vermicompost may present an opportunity to use it as an amendment for acidic soils though there is no clear link between the level inclusion of biochar and the changes in pH. Though the pH was alkaline it was still within the region where most of the macro-nutrients needed by the plants will still be bio available as recommended by Simms and Mahato (2020). In our study, it was clear that the higher EC observed is attributed to the level of biochar incorporation.…”

Section: In Uence Of Seaweed Biochar Incorporation On Vermidegradationmentioning

confidence: 57%

“…The advent of the green revolution saw the introduction of huge industrialization and intensi cation of agricultural activities which has generated huge quantities of waste materials (Chen et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the application of inorganic fertilizers to increase yields of crops has resulted in increased crop yield though this has also contributed to soil degradation as these fertilizers only feed the crop and not the soil which is a living ecosystem. Traditionally composts have been used as organic sources of nutrients, with their limitations being slow release of nutrients into the soil coupled with low nutrient levels and the probability of introducing potentially toxic pathogens and heavy metals into the environment (Chen et al 2020). Recently, research has focused on improved organic fertilizers in sustainable agriculture like vermicomposts which involve the use of solid organic materials such as food waste, animal waste and sewage sludge processed using earthworms such as Eisenia fetida and other species (Garg and Gupta, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Seaweed (Gracilariopsis funicularis) biochar incorporation into a goat manure-food waste vermicompost for optimized vermi-degradation and nutrient release

Katakula

Gawanab²,

Handura

et al. 2022

Preprint

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Vermicomposts are organic fertilizer sources that are being promoted, however their concentration of macro nutrients such as (NPK) are very low. This study therefore evaluated the biochar from seaweed ( Gracilariopsis funicularis ) incorporated into a goat manure-food waste mixture at 0% (control); 2%; 4%; 6% and 8% on compost degradation and macro-nutrient release. After 10 weeks of vermicomposting the highest pH of 9.06 was observed within the control whilst the lowest was 8.7 in the 8% treatment. The electrical conductivity showed a positive relationship with the level of biochar incorporation with the highest of 16.5 mS/cm from the 8% treatment whilst the lowest was within the control with 6 mS/cm. There were no significant differences between treatments on humification parameters, however there were significant differences on the changes of C/N ratio with the final C/N ratio of 14.4; 14.9; 16.7; 15.1 and 14.4 for the control; 2%; 4%; 6%; and 8% treatments respectively. Higher incorporation rate resulted in the higher concentration of potassium with a value of 32.3 g/kg at week 8. The final percentage change in Olsen P was 19%: 14.2%; 7.3%; 4.1% and 3.0% for the 8%; 6%; control; 4%; and 2% treatments, respectively. An optimized level of 6 to 8 % biochar incorporation ratio can be recommended. However, incorporation of G. funicularis biochar does not seem to influence changes in the vermi degradation efficiency, though it can significantly improve the macro nutrients like P, K and Mg concentrations as well as the macro element concentrations.

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Section: In Uence Of Seaweed Biochar Incorporation On Vermidegradationmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seaweed (Gracilariopsis funicularis) biochar incorporation into a goat manure-food waste vermicompost for optimized vermi-degradation and nutrient release

Katakula

Gawanab²,

Handura

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The alkaline vermicompost may present an opportunity to use it as an amendment for acidic soils though there is no clear link between the level of inclusion of biochar and the changes in pH. Though the pH was alkaline, it was still within the region where most of the macronutrients needed by the plants will still be bioavailable as recommended by Simms et al (2020). In our study, it was clear that the higher EC observed is attributed to the level of biochar incorporation.…”

Section: Influence Of Seaweed Biochar Incorporation On Vermidegradationmentioning

confidence: 57%

Seaweed (Gracilariopsis funicularis) biochar incorporation into a goat manure–food waste vermicompost for optimized vermidegradation and nutrient release

Katakula

Gawanab²,

Handura

et al. 2022

Front. Sustain. Food Syst.

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Vermicomposts are organic fertilizer sources that are being promoted; however, their concentrations of macronutrients such as NPK are very low. This study, therefore, evaluated the effects of amending goat manure–food waste mixture with biochar prepared from seaweed (Gracilariopsis funicularis) at 0% (control), 2, 4, 6, and 8% on vermicompost degradation and macronutrient release. After 10 weeks of vermicomposting, the highest pH of 9.06 was observed within the control, whilst the lowest was 8.7 in the 8% treatment. The electrical conductivity showed a positive relationship with the level of biochar incorporation with the highest of 16.5 mS/cm from the 8% treatment, whilst the lowest was within the control with 6 mS/cm. There were no significant differences between treatments on humification parameters; however, there were significant differences in the changes in a C/N ratio with the final C/N ratio of 14.4, 14.9, 16.7, 15.1, and 14.4 for the control, 2, 4, 6, and 8% treatments, respectively. A higher incorporation rate resulted in the higher concentration of potassium with a value of 32.3 g/kg at week 8. The final percentage change in Olsen P was 19, 14.2, 7.3, 4.1, and 3.0% for the 8%, 6%, control, 4%, and 2% treatments, respectively. An optimized level of 6% to 8% biochar incorporation ratio can be recommended. However, the incorporation of G. funicularis biochar does not seem to influence changes in the vermidegradation efficiency, though it can significantly improve the macronutrients such as P, K, and Mg concentrations as well as the macroelement concentrations.

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“…Biochar (BC) is known as an amendment to Terra Preta, a fertile soil in the Amazon region that was man-made in pre-Columbian times (Glaser et al 2001). Although carbon itself has low bioavailability, its large active surface allows various biological, chemical and physical interactions, including water retention (Ogura et al 2016;Ladygina and Rineau 2013;Simms et al 2020) 2. Clay (Cla) is a material that is effective in cation exchange and water absorption.…”

Section: Soil Amendments and Experimental Designmentioning

confidence: 99%

Soil algae for combating soil degradation – greenhouse experiment with different soil amendments

Zhang

Koehler

2022

Soil Res.

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Our research contributes to the knowledge of using soil algae to combat soil degradation. We tested green algae (Klebsormidium accidum) and a eld community in a three-month greenhouse experiment and studied their performance on two substrates: sand from the Ordos Desert and arti cial desert soil (washed sand). Also a rapid uorescence microscopy-Image J method was developed to assess the abundance of algae. We studied the effects of four soil amendments (biochar, clay, organic matter, geohumus®) on the development of green algae, eld algae and biological soil crusts. K. accidum developed better than eld communities, and eld algae preferred washed sand. All amendments had a positive effect on the abundance of K. accidum and eld algae. Biological soil crusts were generally lower in control and organic matter treatments, but relatively higher in biochar and clay treatments. No relationship between algal abundance and soil crust stability was found in this short-term experiment.

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Dose-dependent Effect of Biochar as Soil Amendment on Reducing Copper Phytotoxicity and Mobility

Cited by 9 publications

References 49 publications

Seaweed (Gracilariopsis funicularis) biochar incorporation into a goat manure-food waste vermicompost for optimized vermi-degradation and nutrient release

Seaweed (Gracilariopsis funicularis) biochar incorporation into a goat manure-food waste vermicompost for optimized vermi-degradation and nutrient release

Seaweed (Gracilariopsis funicularis) biochar incorporation into a goat manure–food waste vermicompost for optimized vermidegradation and nutrient release

Soil algae for combating soil degradation – greenhouse experiment with different soil amendments

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