Biochar effect on severity of soybean root disease caused by Fusarium virguliforme

Rogovska, Natalia; Laird, David A.; Leandro, Leonor F.S.; Aller, Deborah

doi:10.1007/s11104-016-3086-8

Cited by 41 publications

(25 citation statements)

References 58 publications

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“…Moreover, recently a review study investigated that low amount of biochar (<1%) is considered effective in suppressing several plant diseases; but a higher rate of biochar (>3%), in most cases, is not effective or persuade plant diseases (Frenkel et al, ). Rogovska, Laird, Leandro, and Aller () indicated that two out of eight biochars significantly inhibited the severity of soybean root rot caused by Fusarium virguliforme under a greenhouse study, and further elucidated that suppression of root rot disease was not linked to the soil physico–chemical properties such as pH, bulk density, and soil moisture. Moreover, in a field experiment, they proved that biochar did not induce any systemic resistance to soybean root rot, and also no effect on soybean grain yield was observed.…”

Section: Biochar As Soil Amelioratormentioning

confidence: 99%

Impact of biochar properties on soil conditions and agricultural sustainability: A review

et al. 2017

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This review summarizes the influences of pyrolysis conditions and feedstock types on biochar properties and how biochar properties in turn affect soil properties. Mechanistic evidence of biochar's potential for enhancing crop productivity, carbon sequestration, and nutrient use efficiency are also discussed. The review identifies the knowledge gaps, limitations, and future research directions for large‐scale use of biochar. Both pyrolytic parameters and feedstock types are considered to be the main factors controlling biochar properties such as nutrient content, recalcitrance, and pH. Biochar produced at low temperatures may improve nutrient availability and crop yield in acidic and alkaline soils, whereas high‐temperature biochar may enhance long‐term soil carbon sequestration. Biochar can also improve the efficiency of inorganic and organic fertilizers by enhancing microbial functions and reducing nutrient loss, thereby making nutrients more available to plants. Integration of biochar and chemical or organic fertilizers generally provides for better nutrient management and crop yield in most types of soils. Although biochar can improve degraded soils, it is not a panacea; as such, soil‐ and crop‐specific biochar are needed in order to ensure optimum crop yield and agricultural sustainability.

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Section: Biochar As Soil Amelioratormentioning

confidence: 99%

Impact of biochar properties on soil conditions and agricultural sustainability: A review

et al. 2017

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“…Together with the previous studies, it can be hypothesized that semiquinone-type EPFRs on the biochars directly react with chromate by transferring electron to reduce Cr(VI), accompanied by forming quinone groups on the biochars. Quinone and hydroquinone has been identified in biochar (Rogovska et al, 2017). The proposed mechanism is depicted in Fig.…”

Section: The Effect Of Epfrs On the Removal Of Cr(vi)mentioning

confidence: 99%

Environmentally persistent free radicals mediated removal of Cr(VI) from highly saline water by corn straw biochars

Zhao

Yin

Liu

et al. 2018

Bioresource Technology

138

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Heavy metal ions coexisting with salts in the contaminant water are difficult to remove due to the interference of salts. Herein, biochars were pyrolyzed by corn straw at different temperatures, aiming to remove Cr(VI) in the presence of salts. Results show that biochars had surprisingly selective adsorption of Cr(VI). X-ray photoelectron and X-ray absorption near edge spectra revealed that Cr(VI) was reduced to Cr(III). All the adsorption was conducted at pH ∼ 7, which differed from the previous studies that Cr(VI) could only be reduced at pH 2-4. Environmental persistent free radicals (EPFRs) on biochars were found to play the role in reducing Cr(VI) in neutral solutions, which was confirmed by electron spin resonance and free radical quenching. The biochar with EPFRs reveals a highly selective removal of Cr(VI), which has implications for the remediation of contaminated water. This work provides a new insight into biochar's properties and potential environmental applications.

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“…Evidence shows that biochar suppresses pathogens mainly by promoting the systemic resistance of plants, improving soil and plant nutrition, regulating soil microflora, and adsorbing and detoxifying chemicals [17,[25][26][27][28][29]. Some reports revealed that biochar control soilborne diseases by stimulating the growth of beneficial microorganisms [30,31]. However, the effects of biochar on plant disease may vary with different biochar feedstocks, application dose, soil type, and disease types [15,20,26].…”

Section: Introductionmentioning

confidence: 99%

Biochar Suppresses Bacterial Wilt of Tomato by Improving Soil Chemical Properties and Shifting Soil Microbial Community

et al. 2019

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The role of biochar amendments in enhancing plant disease resistance has been well documented, but its mechanism is not yet fully understood. In the present study, 2% biochar made from wheat straw was added to the soil of tomato infected by Ralstonia solanacearum to explore the interrelation among biochar, tomato bacterial wilt resistance, soil chemical properties, and soil microbial community and to decipher the disease suppression mechanisms from a soil microbial perspective. Biochar application significantly reduced the disease severity of bacterial wilt, increased soil total organic carbon, total nitrogen, C:N ratio, organic matter, available P, available K, pH, and electrical conductivity. Biochar treatment also increased soil acid phosphatase activity under the non-R.-solanacearum-inoculated condition. High-throughput sequencing of 16S rRNA revealed substantial differences in rhizosphere bacterial community structures between biochar-amended and nonamended treatments. Biochar did not influence soil microbial richness and diversity but significantly increased the relative abundance of Bacteroidetes and Proteobacteria in soil at the phylum level under R. solanacearum inoculation. Furthermore, biochar amendment harbored a higher abundance of Chitinophaga, Flavitalea, Adhaeribacter, Pontibacter, Pedobacter, and Ohtaekwangia at the genus level of Bacteroides and Pseudomonas at the genus level of Proteobacteria under R. solanacearum inoculation. Our findings suggest that a biochar-shifted soil bacterial community structure can favorably contribute to the resistance of tomato plants against bacterial wilt.

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Biochar effect on severity of soybean root disease caused by Fusarium virguliforme

Cited by 41 publications

References 58 publications

Impact of biochar properties on soil conditions and agricultural sustainability: A review

Impact of biochar properties on soil conditions and agricultural sustainability: A review

Environmentally persistent free radicals mediated removal of Cr(VI) from highly saline water by corn straw biochars

Biochar Suppresses Bacterial Wilt of Tomato by Improving Soil Chemical Properties and Shifting Soil Microbial Community

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