What is the best way to measure earthworm-processed soil? A comparison of common water stable aggregates, the smartphone app MOULDER, and a novel SlakeLight method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F24%3A10177338" target="_blank" >RIV/00027006:_____/24:10177338 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41210/24:98438

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0929139324002488/pdfft?md5=2715311ac0f39315dd73e5ae78b67208&pid=1-s2.0-S0929139324002488-main.pdf" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0929139324002488/pdfft?md5=2715311ac0f39315dd73e5ae78b67208&pid=1-s2.0-S0929139324002488-main.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsoil.2024.105517" target="_blank" >10.1016/j.apsoil.2024.105517</a>

Jazyk výsledku

angličtina

Název v původním jazyce

What is the best way to measure earthworm-processed soil? A comparison of common water stable aggregates, the smartphone app MOULDER, and a novel SlakeLight method

Popis výsledku v původním jazyce

Soil aggregates are important for soil fertility and earthworms can support aggregate formation and stability during gut passage, burrowing activity and secretion of polysaccharides. To determine these effects in different soil tillage systems, soil properties, and the earthworm community associated with Lumbricus terrestris (Linnaeus, 1758) were evaluated in two long-term field experiments using plough, cultivator, or no-till. The aim was to investigate effects of earthworm populations on soil aggregate stability and to evaluate three methods, namely: water stable aggregate (WSA) index, MOULDER (formerly SLAKES) and SlakeLight. The WSA method wet-sieves aggregates for 3 min in distilled water and records mass of the dispersed aggregates. MOULDER uses a smartphone application to measure an increase in area of dispersed soil submerged in distilled water to measure slaking, while SlakeLight analyses light transmission corresponding to the area covered by the soil material. Soil samples were collected in autumn at three levels: i) middens, ii) 5 cm radius around burrows of L. terrestris (burrow-midden-complex), and iii) in bulk soil without burrows of L. terrestris. All samples were hand-searched for earthworms or air-dried for soil aggregate stability analyses. The hypothesis tested was that there is a gradient of earthworm worked soil, such that the level of earthworm activity away from a L. terrestris burrow decreases so that: midden &gt; burrow-midden-complex &gt; bulk soil. Total earthworm abundance (individuals level(- 1) f standard deviation), mostly endogeic earthworms, was 3-times higher in the burrow-midden-complex (4.3 f 2.7) than bulk soil for cultivator and doubled for burrow-midden-complex under a ploughing regime (3 f 2.1), while no-till was only slightly increased (4.6 f 2). With rising earthworm numbers, aggregate stability increased, with a higher effect for bulk soil than for burrow-midden-complex. At both sites, MOULDER identified a more stable soil in middens than in bulk soil, while other methods were not so discriminating in their outcomes of middens. However, WSA was more sensitive to interactions of soil tillage x earthworm abundance than SlakeLight or MOULDER and showed that ploughed soil and bulk soil aggregates stabilised the most with increasing earthworm activity. Comparison of the three methods showed that all can be used for earthworm-processed soil, but that selection of the method should depend on the research questions and on resource availability.

Název v anglickém jazyce

What is the best way to measure earthworm-processed soil? A comparison of common water stable aggregates, the smartphone app MOULDER, and a novel SlakeLight method

Popis výsledku anglicky

Soil aggregates are important for soil fertility and earthworms can support aggregate formation and stability during gut passage, burrowing activity and secretion of polysaccharides. To determine these effects in different soil tillage systems, soil properties, and the earthworm community associated with Lumbricus terrestris (Linnaeus, 1758) were evaluated in two long-term field experiments using plough, cultivator, or no-till. The aim was to investigate effects of earthworm populations on soil aggregate stability and to evaluate three methods, namely: water stable aggregate (WSA) index, MOULDER (formerly SLAKES) and SlakeLight. The WSA method wet-sieves aggregates for 3 min in distilled water and records mass of the dispersed aggregates. MOULDER uses a smartphone application to measure an increase in area of dispersed soil submerged in distilled water to measure slaking, while SlakeLight analyses light transmission corresponding to the area covered by the soil material. Soil samples were collected in autumn at three levels: i) middens, ii) 5 cm radius around burrows of L. terrestris (burrow-midden-complex), and iii) in bulk soil without burrows of L. terrestris. All samples were hand-searched for earthworms or air-dried for soil aggregate stability analyses. The hypothesis tested was that there is a gradient of earthworm worked soil, such that the level of earthworm activity away from a L. terrestris burrow decreases so that: midden &gt; burrow-midden-complex &gt; bulk soil. Total earthworm abundance (individuals level(- 1) f standard deviation), mostly endogeic earthworms, was 3-times higher in the burrow-midden-complex (4.3 f 2.7) than bulk soil for cultivator and doubled for burrow-midden-complex under a ploughing regime (3 f 2.1), while no-till was only slightly increased (4.6 f 2). With rising earthworm numbers, aggregate stability increased, with a higher effect for bulk soil than for burrow-midden-complex. At both sites, MOULDER identified a more stable soil in middens than in bulk soil, while other methods were not so discriminating in their outcomes of middens. However, WSA was more sensitive to interactions of soil tillage x earthworm abundance than SlakeLight or MOULDER and showed that ploughed soil and bulk soil aggregates stabilised the most with increasing earthworm activity. Comparison of the three methods showed that all can be used for earthworm-processed soil, but that selection of the method should depend on the research questions and on resource availability.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

APPLIED SOIL ECOLOGY

ISSN

0929-1393

e-ISSN

—

Svazek periodika

201

Číslo periodika v rámci svazku

SEP 2024

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

105517

Kód UT WoS článku

001347821700001

EID výsledku v databázi Scopus

2-s2.0-85197773604