Improved Field Method For Estimating Soil Salinity
| Autor: | Pablo Zalba, Maximiliano Garay, Nilda Amiotti, Adrian Ares |
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| Jazyk: | angličtina |
| Předmět: | |
| Zdroj: | Ciencia del Suelo, Vol 31, Iss 2, Pp 265-269 |
| ISSN: | 1850-2067 0326-3169 |
| Popis: | Soil salinity is a worldwide limitation for agriculture productivity and simplified procedures to assess salinity are needed. In this study, an efficient method for estimating electrical conductivity (EC) on a saturation extract (ECex) from readings in saturated soil-paste to assess soil salinity was improved. EC values measured in a saturation extract (ECex) were compared with those estimated from a saturated paste (ECest) in 36 texturally- different samples from a broad array of soils with halophyte and glycophyte vegetation in the semiarid region of Argentina. The ECest values were very close to ECex values up to 8 dS m-1, at greater values, estimates tended to diverge from observed values. Determination of EC in a saturated soil-paste is a simple and rapid procedure resulting in an accurate estimation of EC in the saturated extract as indicated by the high degree of predictability (r²= 0.95; P< 0.01). In addition, the pH measured in the saturated paste was a good predictor of soil pH, and closely approximated the pH determined in a 1:2.5 soil: water mixture. |
| Databáze: | OpenAIRE |
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