Changes in soil water retention following biochar amendment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F75081431%3A_____%2F21%3A00002112" target="_blank" >RIV/75081431:_____/21:00002112 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.tandfonline.com/doi/full/10.1080/15567036.2021.1916652?scroll=top&needAccess=true" target="_blank" >https://www.tandfonline.com/doi/full/10.1080/15567036.2021.1916652?scroll=top&needAccess=true</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Changes in soil water retention following biochar amendment

Popis výsledku v původním jazyce

To mitigate water runoff from arable land, a variety of measures can be applied. One of them is the amendment of highly porous biochar to increase the water retention capacity of soils and store the runoff water. Various types of biochar are made under variable production conditions and amended to soils of different quality in a wide range of quantities. Since reported data show ambiguities due to various feedstock, pyrolysis parameters, soil characteristics, and a highly variable change in water retention capacity (WRC), robust statistical methods were applied to compare the reported data from previous studies. The results revealed that biochar increased WRC by 0.26% t ha−1 of biochar added on average. In terms of WRC, biochar produced at lower pyrolysis temperatures functioned surprisingly better than that produced at higher temperatures, which was confirmed by a decision tree made by J48 algorithm. The increase of WRC was higher with sandy soils, whereas silty and loamy soils did not show a significant increase. Biochar made from easily biodegradable, post-harvest residues such as straw or rice husk showed higher impact than others made from wood that is appreciated for its high porosity. This is a groundbreaking argument for stopping the usage of biochar for energy purposes. The high organic content in soils was the major driver damping the WRC increase. The most effective measure for increasing WRC is the application of 90 t ha−1 biochar, preferably made of an easily biodegradable phytomass that is pyrolyzed at low temperatures. The presented study compares 166 specific combinations of various biochar and soil properties, shows the effectivity of biochar amendments for WTR increment, and reviews the impact of biochar amendment in terms of water retention in agricultural landscapes.

Název v anglickém jazyce

Changes in soil water retention following biochar amendment

Popis výsledku anglicky

To mitigate water runoff from arable land, a variety of measures can be applied. One of them is the amendment of highly porous biochar to increase the water retention capacity of soils and store the runoff water. Various types of biochar are made under variable production conditions and amended to soils of different quality in a wide range of quantities. Since reported data show ambiguities due to various feedstock, pyrolysis parameters, soil characteristics, and a highly variable change in water retention capacity (WRC), robust statistical methods were applied to compare the reported data from previous studies. The results revealed that biochar increased WRC by 0.26% t ha−1 of biochar added on average. In terms of WRC, biochar produced at lower pyrolysis temperatures functioned surprisingly better than that produced at higher temperatures, which was confirmed by a decision tree made by J48 algorithm. The increase of WRC was higher with sandy soils, whereas silty and loamy soils did not show a significant increase. Biochar made from easily biodegradable, post-harvest residues such as straw or rice husk showed higher impact than others made from wood that is appreciated for its high porosity. This is a groundbreaking argument for stopping the usage of biochar for energy purposes. The high organic content in soils was the major driver damping the WRC increase. The most effective measure for increasing WRC is the application of 90 t ha−1 biochar, preferably made of an easily biodegradable phytomass that is pyrolyzed at low temperatures. The presented study compares 166 specific combinations of various biochar and soil properties, shows the effectivity of biochar amendments for WTR increment, and reviews the impact of biochar amendment in terms of water retention in agricultural landscapes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20800 - Environmental biotechnology

Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS

ISSN

1556-7036

e-ISSN

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Svazek periodika

Neuveden

Číslo periodika v rámci svazku

APR 2021

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

1-9

Kód UT WoS článku

000640581200001

EID výsledku v databázi Scopus

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