| Journal: | Scientia agricola |
| Database: | PERIÓDICA |
| System number: | 000354697 |
| ISSN: | 0103-9016 |
| Authors: | Molin, Jose Paulo1 Faulin, Gustavo Di Chiacchio |
| Institutions: | 1Universidade de Sao Paulo, Escola Superior de Agricultura "Luiz de Queiroz", Piracicaba, Sao Paulo. Brasil |
| Year: | 2013 |
| Season: | Ene-Feb |
| Volumen: | 70 |
| Number: | 1 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | Soil electrical conductivity (ECa) is a soil quality indicator associated to attributes interesting to site-specific soil management such as soil moisture and texture. Soil ECa provides information that helps guide soil management decisions, so we performed spatial evaluation of soil moisture in two experimental fields in two consecutive years and modeled its influence on soil ECa. Soil ECa, moisture and clay content were evaluated by statistical, geostatistical and regression analyses. Semivariogram models, adjusted for soil moisture, had strong spatial dependence, but the relationship between soil moisture and soil ECa was obtained only in one of the experimental fields, where soil moisture and clay content range was higher. In this same field, coefficients of determinations between soil moisture and clay content were above 0.70. In the second field, the low soil moisture and clay content range explain the absence of a relationship between soil ECa and soil moisture. Data repetition over the years, suggested that ECa is a qualitative indicator in areas with high spatial variability in soil texture |
| Disciplines: | Agrociencias |
| Keyword: | Suelos, Variabilidad espacial, Variación temporal, Conductividad eléctrica, Humedad del suelo, Propiedades físicas, Geoestadística, Sensores |
| Keyword: | Agricultural sciences, Soils, Spatial variability, Temporal variation, Electrical conductivity, Soil moisture, Geostatistics, Sensors |
| Full text: | Texto completo (Ver HTML) |
