The Effectiveness of a Microbiological Attribute as a Soil Quality Indicator Depends on the Storage Time of the Sample
| Autor: | Silvia Maria de Oliveira-Longatti, Osnar Obede da Silva Aragão, Fatima Maria de Souza Moreira, Ederson da Conceição Jesus, André A. Souza, Elismar Pereira de Oliveira, Marina Neves Merlo |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Soil test biology Urease Soil texture Sample (material) Acid phosphatase Soil Science 04 agricultural and veterinary sciences Plant Science complex mixtures 01 natural sciences Soil quality Agronomy Respiration 040103 agronomy & agriculture biology.protein 0401 agriculture forestry and fisheries Environmental science Agronomy and Crop Science Arylsulfatase 010606 plant biology & botany |
| Zdroj: | Journal of Soil Science and Plant Nutrition. 20:2525-2535 |
| ISSN: | 0718-9516 0718-9508 |
| Popis: | The aim of this study was to analyze the effect of storage time on the main microbiological attributes used as soil quality indicators. Seven attributes were evaluated (microbial biomass carbon; microbial basal respiration; fluorescein diacetate hydrolysis—FDA; and the activity of the enzymes urease, β-glucosidase, arylsulfatase, and acid phosphatase) in four different soil environments (clayey soil in forest, sandy soil in forest, clayey soil in coffee field, and sandy soil in coffee field). Each attribute was quantified at five different storage times (15 h and 15, 30, 60, and 120 days). The values of FDA, microbial biomass carbon, and arylsulfatase declined significantly in the first 15 days of storage. Therefore, these attributes should be evaluated soon after soil collection. The values of microbial basal respiration declined on day 30; therefore, it should be evaluated up to day 15 of storage. The decline in urease values varied depending on soil texture; therefore, the shortest storage period, 15 days, should be considered. The values of β-glucosidase declined only on day 120. Therefore, soil samples can be stored for up to 60 days for determination of this enzyme. Acid phosphatase activity was not affected by storage time. Depending on storage time, all the attributes were able to differentiate the soil environments. Long storage times compromise the use of most of the attributes as soil quality indicators, as well as their usefulness in discriminating soil environments. Therefore, storage times should be considered when these attributes are used as soil quality indicators. |
| Databáze: | OpenAIRE |
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