Effect of amending soil by exogenous materials on soil aggregate stability and humic substances content and quality

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F24%3A10177505" target="_blank" >RIV/00027006:_____/24:10177505 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Effect of amending soil by exogenous materials on soil aggregate stability and humic substances content and quality

Original language description

The resistance of soil aggregates against water is an important indicator of soil quality. The stability of soil aggregates depends on soil type, agrotechnical measures, climatic conditions, and organic material application. Due to the lack of organic fertilizers and their high prices different exogenous materials (e.g. digestate, compost etc.) are applied as a fertilizer. The study aims to evaluate the effect of amending soil by mineral fertilizers /NPK/, livestock manure /FYM/, cattle slurry /Slurry/, and digestate /Digestate/ on aggregates stability and humic substances content and quality. The long-term field experiment was carried out at the locality Jevíčko, region of Boskovice Furrow Malá Haná (the Czech Republic). The soil type was classified as Haplic Fluvisol (Němeček et al., 2011) and it is used as permanent grassland. Basic soil properties were determined by standard analytical methods during the summer and autumn of 2023. Active and exchangeable soil reaction was determined by the potentiometric method. Soil aggregate stability was determined by aggregate crumbling after the placement to water. Soil organic carbon was determined using the oxidimetric titration method (Nelson, Sommers 1996). Humic substances were extracted by the mixture of 0.1 M NaOH and 0.1 M Na4P2O7 (1:1, w/w). The quality of humic substances was evaluated by HA/FA ratio and using UV-VIS spectroscopy. Results were statistically evaluated (ANOVA, Tuckey test). The following significant correlations were found in the studied period. In the summer there was a significant difference in soil aggregate stability between the NPK (70%) and Control (62%) variants. In autumn there was a significant difference in soil aggregate stability between the Control (65%), FYM (75%), Digestate (74%) and Slurry (73%) variants. HK/FK ratio showed a statistically significant difference between the Control (0.99) and FYM (1.21) and Slurry (1.14) and Digestate (1.14). Furthermore, a significant difference was observed between the FYM and NPK (1.07) variants. Oxidizable carbon content recorded significant statistical differences in summer and autumn in the Slurry, Digestate, and NPK variants. The FYM and Slurry variants significantly differed from all other variants. It can be concluded that the greatest influence on the stability of soil aggregates had the FYM application.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

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

Project

<a href="/en/project/QK21010124" target="_blank" >QK21010124: Soil organic matter - evaluating of quality parameters</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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