Fast immersion to test the stability of aggregates in water: consequences for interpreting results from tropical soil classes
Document title: Fast immersion to test the stability of aggregates in water: consequences for interpreting results from tropical soil classes
Journal: Acta scientiarum. Agronomy
Database: PERIÓDICA
System number: 000460070
ISSN: 1679-9275
Authors: 1
2
2
2
2
Institutions: 1Universidade Federal do Piaui, Departamento de Engenharia Agronomica, Bom Jesus, Piaui. Brasil
2Universidade Federal de Lavras, Departamento de Ciencia do Solo, Lavras, Minas Gerais. Brasil
Year:
Volumen: 42
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, analítico
English abstract Aggregates are the primary structural components of soil and have been used as an indicator of soil quality in conservation systems. The objective of this study was to analyse the effect of slow pre-wetting on the results of the aggregate stability test for different classes of tropical soils. Data were arranged in a 2 x 4 factorial design with three replications, in which the first factor comprised the two methods of pre-treatment on soil aggregates: without pre-wetting (WOPW), which considered the moisture of the aggregates in the field, and with pre-wetting (WPW), which considered the slow wetting of aggregates through capillarity on wet filter paper for 24h. The second factor consisted of four soil classes: Typic Dystrustept (Cambissolo Aplico distrófico in Embrapa), Typic Hapludult (Argissolo Amarelo distrófico), Rhodic Kandiudult (Nitossolo Vermelho distrófico), and Anionic Acrudox (Latossolo Vermelho distróferrico) and considered horizons A and B. The pre-wetting significantly increased the values of the weighted average diameter, geometric mean diameter and aggregate stability index. In soils with high organic carbon content, the practice of pre-moistening did not provide variation in aggregation
Disciplines: Agrociencias
Keyword: Suelos,
Edafología,
Estructura del suelo,
Calidad ambiental,
Agua,
Brasil
Keyword: Soils,
Edaphology,
Water,
Brazil,
Soil structure,
Environmental quality
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