Quality of soil organic matter studied by UV-VIS spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26296080%3A_____%2F22%3AN0000046" target="_blank" >RIV/26296080:_____/22:N0000046 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Quality of soil organic matter studied by UV-VIS spectroscopy

Popis výsledku v původním jazyce

As a result of intensive agriculture, we can recognize positive or negative soil aberration. One of the negative aberrations is a lack of organic inputs and the gradual decline of soil organic matter. The last may lead to decreasing in water retention and an increase in soil acidity. This is documented in the monoculture of spring barley, which was studied during a long-term field experiment (2017-2021). The content and quality of soil organic matter in monoculture of spring barley (Hordeum vulgare L.) was compared with Norfolk crop sequence. Two different types of tillage systems (conventional and minimum tillage) were studied. Gleyic Fluvisol Clayic was heavy textured, weakly acidic, with medium humus content. Soil organic carbon was determined by titrimetric method and quality of humic substances was measured in UV-VIS spectral range (300-700nm). The Colour index was calculated as a ratio A465nm/665nm. After short fractionation, the ratio of humic acids and fulvic acids (HA/FA ratio) was calculated. ANOVA analysis (program StatisticaCZ12 software) and post-hoc Fisher test (p≤0.05) were applied for data set evaluation. Results showed that agrotechnical practices directly affect soil organic carbon content and humic substances quality. Norfolk crop rotation system (minimum tillage) to compare with other variants of farming represents less negative soil aberration and higher content and quality of humic substances. Differences between variants were statistically significant (p≤0.05).

Název v anglickém jazyce

Quality of soil organic matter studied by UV-VIS spectroscopy

Popis výsledku anglicky

As a result of intensive agriculture, we can recognize positive or negative soil aberration. One of the negative aberrations is a lack of organic inputs and the gradual decline of soil organic matter. The last may lead to decreasing in water retention and an increase in soil acidity. This is documented in the monoculture of spring barley, which was studied during a long-term field experiment (2017-2021). The content and quality of soil organic matter in monoculture of spring barley (Hordeum vulgare L.) was compared with Norfolk crop sequence. Two different types of tillage systems (conventional and minimum tillage) were studied. Gleyic Fluvisol Clayic was heavy textured, weakly acidic, with medium humus content. Soil organic carbon was determined by titrimetric method and quality of humic substances was measured in UV-VIS spectral range (300-700nm). The Colour index was calculated as a ratio A465nm/665nm. After short fractionation, the ratio of humic acids and fulvic acids (HA/FA ratio) was calculated. ANOVA analysis (program StatisticaCZ12 software) and post-hoc Fisher test (p≤0.05) were applied for data set evaluation. Results showed that agrotechnical practices directly affect soil organic carbon content and humic substances quality. Norfolk crop rotation system (minimum tillage) to compare with other variants of farming represents less negative soil aberration and higher content and quality of humic substances. Differences between variants were statistically significant (p≤0.05).

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

40101 - Agriculture

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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