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![]() CORCIMARU, Serghei, MERENIUC, Lilia, SÎTNIC, Feodora. Microbiological tools for effective assessment and prediction of the impact of soil management on soil organic matter. In: Agrobiodiversity for improving the nutrition, health: , quality of life and spiritual human development, Ed. 5, 3 noiembrie 2021, Nitra. Nitra, Slovacia: Slovak University of Agriculture in Nitra, 2021, Ediția 5, p. 38. ISBN 978-80-552-2401-5. 10.15414/2021.9788055224015 |
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Agrobiodiversity for improving the nutrition, health Ediția 5, 2021 |
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Conferința "Agrobiodiversity for Improving the Nutrition, Health, Quality of Life and Spiritual Human Development" 5, Nitra, Slovacia, 3 noiembrie 2021 | ||||||
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Pag. 38-38 | ||||||
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Efficient tools for the assessment and prediction of impacts on soil organic matter (SOM) |
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Cuvinte-cheie soil microbial biomass, soil organic matter, soil biodiversity, soil quality prediction |
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Cerif XML Export
<?xml version='1.0' encoding='utf-8'?> <CERIF xmlns='urn:xmlns:org:eurocris:cerif-1.5-1' xsi:schemaLocation='urn:xmlns:org:eurocris:cerif-1.5-1 http://www.eurocris.org/Uploads/Web%20pages/CERIF-1.5/CERIF_1.5_1.xsd' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' release='1.5' date='2012-10-07' sourceDatabase='Output Profile'> <cfResPubl> <cfResPublId>ibn-ResPubl-141875</cfResPublId> <cfResPublDate>2021</cfResPublDate> <cfVol>Ediția 5</cfVol> <cfStartPage>38</cfStartPage> <cfISBN>978-80-552-2401-5</cfISBN> <cfURI>https://ibn.idsi.md/ro/vizualizare_articol/141875</cfURI> <cfTitle cfLangCode='EN' cfTrans='o'>Microbiological tools for effective assessment and prediction of the impact of soil management on soil organic matter</cfTitle> <cfKeyw cfLangCode='EN' cfTrans='o'>soil microbial biomass; soil organic matter; soil biodiversity; soil quality prediction</cfKeyw> <cfAbstr cfLangCode='EN' cfTrans='o'><p>Efficient tools for the assessment and prediction of impacts on soil organic matter (SOM)<br />are necessary for the development of sustainable management practices aimed at maintaining<br />and enhancing soil biodiversity. The usefulness of direct SOM measurements in these matters<br />is constrained by the impossibility of establishing experimentally verifiable changes within a<br />relatively short time. Soil microbial biomass (SMB) is among the most promising tools for<br />timely detection and prediction of changes in SOM induced by soil management. The purpose<br />of this work was to make use of the advantages of long-term field experiments to identify<br />microbial parameters that could be used as an effective tool for SOM-related assessments and<br />predictions. The long-term field experiments of the study included 2 soil types (the moderately<br />and the poorly humified Typical chernozems), 6 traditional (10-field) and 5 ecological (7-field)<br />crop rotations with and without alfalfa, mineral fertilizers and/or farmyard manure;<br />continuous black fallow and 5 continuous crops with and without mineral fertilizers with<br />farmyard manure. Soil samples were collected in the springtime from a depth of 0-20 cm;<br />passed through a 2 mm sieve and plant material, stones and visible organisms removed<br />manually; adjusted to 40 percent water holding capacity and pre-incubated for 10 days at 25oC<br />in the dark, in aerated plastic bags with periodic adjustment of moisture. SOM was determined<br />by dichromate oxidation followed by back titration of the excess dichromate. SMB was<br />determined by substrate-induced respiration and/or fumigation-extraction. Basal respiration<br />was determined by using IRGA or gas chromatography. Metabolic quotient was calculated as<br />basal respiration expressed per unit of SMB carbon, and microbial quotient was expressed as<br />the percentage of SMB carbon to the total soil organic carbon.<br />Significant correlations between SOM and soil microbial parameters (SMB, and/or basal<br />respiration, and/or metabolic quotient) were observed in the moderately and poorly humified<br />Typical chernozems of the studied long-term field experiments. These correlations<br />demonstrated that with time-specific relationships between SOM and SMB related parameters<br />are reached in the chernozem soils of Moldova, relationships that remain the same across a wide<br />range of experimental variants with different levels of SOM and SMB, and are conditioned by<br />peculiarities of soil management. These correlations as well as the difference in the turnover<br />rates between SMB and SOM permit a practical possibility of using SMB as a tool for SOM-related<br />assessments and predictions. Once a new soil management practice is introduced and SMB is<br />allowed sufficient time (comparable to the SMB turnover rates) to approach the new<br />equilibrium determined by peculiarities of this practice, the quantitative prediction of the<br />future SOM level becomes predictable from the new microbial parameters and the established<br />correlational relationship (assuming that given enough time SOM will tend to fit the same<br />correlational relationship that was observable in the long-term field experiments). These<br />predictions may be beneficial in such important fields as protection and enhancement of soil<br />quality and biodiversity, carbon sequestration, development/assessment of sustainable soil<br />management practices, and others. The implementation of the possibility will provide farmers<br />with better opportunities for investing in soil quality/biodiversity and will contribute to solving<br />problems related to climate change and others.</p></cfAbstr> <cfResPubl_Class> <cfClassId>eda2d9e9-34c5-11e1-b86c-0800200c9a66</cfClassId> <cfClassSchemeId>759af938-34ae-11e1-b86c-0800200c9a66</cfClassSchemeId> <cfStartDate>2021T24:00:00</cfStartDate> </cfResPubl_Class> <cfResPubl_Class> <cfClassId>e601872f-4b7e-4d88-929f-7df027b226c9</cfClassId> <cfClassSchemeId>40e90e2f-446d-460a-98e5-5dce57550c48</cfClassSchemeId> <cfStartDate>2021T24:00:00</cfStartDate> </cfResPubl_Class> <cfPers_ResPubl> <cfPersId>ibn-person-14646</cfPersId> <cfClassId>49815870-1cfe-11e1-8bc2-0800200c9a66</cfClassId> <cfClassSchemeId>b7135ad0-1d00-11e1-8bc2-0800200c9a66</cfClassSchemeId> <cfStartDate>2021T24:00:00</cfStartDate> </cfPers_ResPubl> <cfPers_ResPubl> <cfPersId>ibn-person-12457</cfPersId> <cfClassId>49815870-1cfe-11e1-8bc2-0800200c9a66</cfClassId> <cfClassSchemeId>b7135ad0-1d00-11e1-8bc2-0800200c9a66</cfClassSchemeId> <cfStartDate>2021T24:00:00</cfStartDate> </cfPers_ResPubl> <cfPers_ResPubl> <cfPersId>ibn-person-24718</cfPersId> <cfClassId>49815870-1cfe-11e1-8bc2-0800200c9a66</cfClassId> <cfClassSchemeId>b7135ad0-1d00-11e1-8bc2-0800200c9a66</cfClassSchemeId> <cfStartDate>2021T24:00:00</cfStartDate> </cfPers_ResPubl> <cfFedId> <cfFedIdId>ibn-doi-141875</cfFedIdId> <cfFedId>10.15414/2021.9788055224015</cfFedId> <cfStartDate>2021T24:00:00</cfStartDate> <cfFedId_Class> <cfClassId>31d222b4-11e0-434b-b5ae-088119c51189</cfClassId> <cfClassSchemeId>bccb3266-689d-4740-a039-c96594b4d916</cfClassSchemeId> </cfFedId_Class> <cfFedId_Srv> <cfSrvId>5123451</cfSrvId> <cfClassId>eda2b2e2-34c5-11e1-b86c-0800200c9a66</cfClassId> <cfClassSchemeId>5a270628-f593-4ff4-a44a-95660c76e182</cfClassSchemeId> </cfFedId_Srv> </cfFedId> </cfResPubl> <cfPers> <cfPersId>ibn-Pers-14646</cfPersId> <cfPersName_Pers> <cfPersNameId>ibn-PersName-14646-3</cfPersNameId> <cfClassId>55f90543-d631-42eb-8d47-d8d9266cbb26</cfClassId> <cfClassSchemeId>7375609d-cfa6-45ce-a803-75de69abe21f</cfClassSchemeId> <cfStartDate>2021T24:00:00</cfStartDate> <cfFamilyNames>Корчмару</cfFamilyNames> <cfFirstNames>Сергей</cfFirstNames> </cfPersName_Pers> </cfPers> <cfPers> <cfPersId>ibn-Pers-12457</cfPersId> <cfPersName_Pers> <cfPersNameId>ibn-PersName-12457-3</cfPersNameId> <cfClassId>55f90543-d631-42eb-8d47-d8d9266cbb26</cfClassId> <cfClassSchemeId>7375609d-cfa6-45ce-a803-75de69abe21f</cfClassSchemeId> <cfStartDate>2021T24:00:00</cfStartDate> <cfFamilyNames>Mereniuc</cfFamilyNames> <cfFirstNames>Lilia</cfFirstNames> </cfPersName_Pers> </cfPers> <cfPers> <cfPersId>ibn-Pers-24718</cfPersId> <cfPersName_Pers> <cfPersNameId>ibn-PersName-24718-3</cfPersNameId> <cfClassId>55f90543-d631-42eb-8d47-d8d9266cbb26</cfClassId> <cfClassSchemeId>7375609d-cfa6-45ce-a803-75de69abe21f</cfClassSchemeId> <cfStartDate>2021T24:00:00</cfStartDate> <cfFamilyNames>Sîtnic</cfFamilyNames> <cfFirstNames>Feodora</cfFirstNames> </cfPersName_Pers> </cfPers> <cfSrv> <cfSrvId>5123451</cfSrvId> <cfName cfLangCode='en' cfTrans='o'>CrossRef DOI prefix service</cfName> <cfDescr cfLangCode='en' cfTrans='o'>The service of issuing DOI prefixes to publishers</cfDescr> <cfKeyw cfLangCode='en' cfTrans='o'>persistent identifier; Digital Object Identifier</cfKeyw> </cfSrv> </CERIF>