From Feedstock to Function: How Pyrolysis and Oxidation Shape Biochar Performance in Soil-Plant Interactions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F25%3A43910668" target="_blank" >RIV/60076658:12220/25:43910668 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3390/plants14213278" target="_blank" >https://doi.org/10.3390/plants14213278</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/plants14213278" target="_blank" >10.3390/plants14213278</a>

Jazyk výsledku

angličtina

Název v původním jazyce

From Feedstock to Function: How Pyrolysis and Oxidation Shape Biochar Performance in Soil-Plant Interactions

Popis výsledku v původním jazyce

Nutrient losses through leaching and low nutrient use efficiency are major challenges limiting crop productivity and causing environmental pollution. Biochar has been widely studied as a soil amendment to improve nutrient retention; however, the combined effects of pyrolysis temperature and post-production oxidation on soil nutrient dynamics and plant performance remain unclear. In this study, wheat straw and wood residue biochars were produced at two pyrolysis temperatures (350 and 450 degrees C) and subsequently modified by hydrogen peroxide (H2O2) oxidation to enhance surface functionality. A pot experiment with fava bean (Vicia faba L.) was conducted to evaluate the effects of pristine and oxidized biochars on soil chemical properties, nutrient leaching, and plant nutrient uptake. Results showed that pristine biochars increased soil pH from 6.82 (control) to 8.73-9.12 and EC from 2.15 to 3.06-4.71 dS m-1, with wheat straw biochars having stronger alkalizing effects. In contrast, oxidized biochars decreased soil pH to 5.62-5.93 due to the introduction of oxygen-containing functional groups. All biochars reduced NO3--N, NH4+-N, and PO43--P leaching, with the most pronounced reductions observed in oxidized wheat straw biochar produced at 450 degrees C (O-BWS450). Improved nutrient retention translated into higher plant nutrient uptake: fava bean plants grown in O-BWS450-amended soil achieved the greatest N (6.71%) and P (3.89%) uptake, significantly higher than the control. These findings highlight the potential of oxidation-modified biochars, particularly wheat straw biochar produced at moderate pyrolysis temperature, to improve soil nutrient conservation and enhance crop nutrition simultaneously. Such modifications represent a promising approach for developing biochar-based soil amendments that promote sustainable nutrient management.

Název v anglickém jazyce

From Feedstock to Function: How Pyrolysis and Oxidation Shape Biochar Performance in Soil-Plant Interactions

Popis výsledku anglicky

Nutrient losses through leaching and low nutrient use efficiency are major challenges limiting crop productivity and causing environmental pollution. Biochar has been widely studied as a soil amendment to improve nutrient retention; however, the combined effects of pyrolysis temperature and post-production oxidation on soil nutrient dynamics and plant performance remain unclear. In this study, wheat straw and wood residue biochars were produced at two pyrolysis temperatures (350 and 450 degrees C) and subsequently modified by hydrogen peroxide (H2O2) oxidation to enhance surface functionality. A pot experiment with fava bean (Vicia faba L.) was conducted to evaluate the effects of pristine and oxidized biochars on soil chemical properties, nutrient leaching, and plant nutrient uptake. Results showed that pristine biochars increased soil pH from 6.82 (control) to 8.73-9.12 and EC from 2.15 to 3.06-4.71 dS m-1, with wheat straw biochars having stronger alkalizing effects. In contrast, oxidized biochars decreased soil pH to 5.62-5.93 due to the introduction of oxygen-containing functional groups. All biochars reduced NO3--N, NH4+-N, and PO43--P leaching, with the most pronounced reductions observed in oxidized wheat straw biochar produced at 450 degrees C (O-BWS450). Improved nutrient retention translated into higher plant nutrient uptake: fava bean plants grown in O-BWS450-amended soil achieved the greatest N (6.71%) and P (3.89%) uptake, significantly higher than the control. These findings highlight the potential of oxidation-modified biochars, particularly wheat straw biochar produced at moderate pyrolysis temperature, to improve soil nutrient conservation and enhance crop nutrition simultaneously. Such modifications represent a promising approach for developing biochar-based soil amendments that promote sustainable nutrient management.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Plants-Basel

ISSN

2223-7747

e-ISSN

2223-7747

Svazek periodika

14

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

14

Strana od-do

1-14

Kód UT WoS článku

001612585400001

EID výsledku v databázi Scopus

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