Humic Acid Mitigates the Negative Effects of High Rates of Biochar Application on Microbial Activity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F20%3A43918584" target="_blank" >RIV/62156489:43410/20:43918584 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41310/20:83827 RIV/00216305:26310/20:PU138512 RIV/26296080:_____/20:N0000101

Výsledek na webu

<a href="https://doi.org/10.3390/su12229524" target="_blank" >https://doi.org/10.3390/su12229524</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/su12229524" target="_blank" >10.3390/su12229524</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Humic Acid Mitigates the Negative Effects of High Rates of Biochar Application on Microbial Activity

Popis výsledku v původním jazyce

Objective: Biochar and a commercial humic acid-rich product, Humac (modified leonardite), represent soil amendments with the broad and beneficial effects on various soil properties. Their combination has been scarcely tested so far, although the positive impact of their interaction might be desirable. Materials and Methods: The dehydrogenase activity (DHA), microbial biomass carbon (Cmic ), soil respiration (basal and substrate-induced), enzyme activities, total carbon (Ctot ), and both shoot and root biomass yield were measured and compared in the short-term pot experiment with the lettuce seedlings. The following treatments were tested: the unamended soil (control), the Humac-amended soil (0.8 g.kgMINUS SIGN 1 ), the biochar-amended soil (low biochar 32 g.kgMINUS SIGN 1, high biochar 80 g.kgMINUS SIGN 1 ), and the soil-amended with biochar + Humac. Results: The effect of both amendments on the soil pH was insignificant. The highest average values of Ctot and Cmic were detected in high biochar treatment and the highest average values of basal and substrate-induced respiration (glucose, glucosamine, alanine) were detected in the low biochar treatment. The phosphatase activity and fresh and dry lettuce aboveground biomass were the highest in the low biochar + Humac treatment. Conclusions: Even though the combination of both biochar + Humac decreased the microbial activities in the amended soil (Cmic, DHA, enzymes, substrate-induced respiration) at the low biochar dose, they mitigated the detrimental effect of the high biochar dose on respiration (all the types) and the enzyme (phosphatase, arylsulphatase) activities. In contrast to the previously published research in this issue, the effects could not be attributed to the change of the soil pH.

Název v anglickém jazyce

Humic Acid Mitigates the Negative Effects of High Rates of Biochar Application on Microbial Activity

Popis výsledku anglicky

Objective: Biochar and a commercial humic acid-rich product, Humac (modified leonardite), represent soil amendments with the broad and beneficial effects on various soil properties. Their combination has been scarcely tested so far, although the positive impact of their interaction might be desirable. Materials and Methods: The dehydrogenase activity (DHA), microbial biomass carbon (Cmic ), soil respiration (basal and substrate-induced), enzyme activities, total carbon (Ctot ), and both shoot and root biomass yield were measured and compared in the short-term pot experiment with the lettuce seedlings. The following treatments were tested: the unamended soil (control), the Humac-amended soil (0.8 g.kgMINUS SIGN 1 ), the biochar-amended soil (low biochar 32 g.kgMINUS SIGN 1, high biochar 80 g.kgMINUS SIGN 1 ), and the soil-amended with biochar + Humac. Results: The effect of both amendments on the soil pH was insignificant. The highest average values of Ctot and Cmic were detected in high biochar treatment and the highest average values of basal and substrate-induced respiration (glucose, glucosamine, alanine) were detected in the low biochar treatment. The phosphatase activity and fresh and dry lettuce aboveground biomass were the highest in the low biochar + Humac treatment. Conclusions: Even though the combination of both biochar + Humac decreased the microbial activities in the amended soil (Cmic, DHA, enzymes, substrate-induced respiration) at the low biochar dose, they mitigated the detrimental effect of the high biochar dose on respiration (all the types) and the enzyme (phosphatase, arylsulphatase) activities. In contrast to the previously published research in this issue, the effects could not be attributed to the change of the soil pH.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/TH03030319" target="_blank" >TH03030319: Podpora funkční diverzity půdních organismů aplikací klasických a modifikovaných stabilních organických hmot při zachování produkčních vlastností půd</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Sustainability

ISSN

2071-1050

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

19

Strana od-do

9524

Kód UT WoS článku

000594552500001

EID výsledku v databázi Scopus

2-s2.0-85096092342