The accumulation of mineral nitrogen in soil during drying events is affected by soil management

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41340%2F25%3A106201" target="_blank" >RIV/60460709:41340/25:106201 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.still.2025.106623" target="_blank" >https://doi.org/10.1016/j.still.2025.106623</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.still.2025.106623" target="_blank" >10.1016/j.still.2025.106623</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The accumulation of mineral nitrogen in soil during drying events is affected by soil management

Popis výsledku v původním jazyce

Soil drying events play a critical role in shaping nitrogen (N) cycling in drylands by influencing N availability and the risk of N losses. This study examines how different soil management practices (no-tillage (NT) and traditional tillage (TT), with and without liming)affect N mineralization and the accumulation of inorganic N during drying periods in a hot-summer Mediterranean climate. Using soils from a long-term field experiment in southwestern Spain, we evaluated changes in inorganic N, enzymatic activities, and the abundance of genes related to N cycling during a summer fallow under field conditions, and in a complementary laboratory incubation under controlled temperature conditions. Field results showed a significant accumulation of inorganic N (from 6.47 to 11.43 mg N kg-1) during drying, with a synergistic effect of NT and liming. Enzymatic activities (beta-glucosaminidase, leucine aminopeptidase, proteases) and gene abundances (chiA, pepA, apr) declined with drying but remained higher under NT than TT. The laboratory study confirmed that management-induced differences in N cycling were mainly due to changes in soil biogeochemical properties (organic matter, pH), rather than changes in microclimatic conditions (soil temperature and moisture). While NT and liming enhanced N mineralization and microbial resilience, they also promoted inorganic N accumulation, increasing the potential for N losses (e.g., via N2O emissions) upon rewetting. These results highlight the importance of integrating adaptive practices, such as summer cover cropping, into conservation agriculture to reduce N losses and improve nutrient use efficiency under increasingly frequent drought conditions.

Název v anglickém jazyce

The accumulation of mineral nitrogen in soil during drying events is affected by soil management

Popis výsledku anglicky

Soil drying events play a critical role in shaping nitrogen (N) cycling in drylands by influencing N availability and the risk of N losses. This study examines how different soil management practices (no-tillage (NT) and traditional tillage (TT), with and without liming)affect N mineralization and the accumulation of inorganic N during drying periods in a hot-summer Mediterranean climate. Using soils from a long-term field experiment in southwestern Spain, we evaluated changes in inorganic N, enzymatic activities, and the abundance of genes related to N cycling during a summer fallow under field conditions, and in a complementary laboratory incubation under controlled temperature conditions. Field results showed a significant accumulation of inorganic N (from 6.47 to 11.43 mg N kg-1) during drying, with a synergistic effect of NT and liming. Enzymatic activities (beta-glucosaminidase, leucine aminopeptidase, proteases) and gene abundances (chiA, pepA, apr) declined with drying but remained higher under NT than TT. The laboratory study confirmed that management-induced differences in N cycling were mainly due to changes in soil biogeochemical properties (organic matter, pH), rather than changes in microclimatic conditions (soil temperature and moisture). While NT and liming enhanced N mineralization and microbial resilience, they also promoted inorganic N accumulation, increasing the potential for N losses (e.g., via N2O emissions) upon rewetting. These results highlight the importance of integrating adaptive practices, such as summer cover cropping, into conservation agriculture to reduce N losses and improve nutrient use efficiency under increasingly frequent drought conditions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40104 - Soil science

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Soil & Tillage Research

ISSN

0167-1987

e-ISSN

0167-1987

Svazek periodika

252

Číslo periodika v rámci svazku

OCT 2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

—

Kód UT WoS článku

001484703000001

EID výsledku v databázi Scopus

2-s2.0-105003731283