Soil structural condition and its relationship with pastures under different conditions in the Simpson Valley (Humid western Patagonia, Chile)
The structural condition of the soil and its relationship with pastures under different conditions in use soil were evaluated in the Simpson Valley, Aysén Region, Chile (45° 43 ' S, 72° 07'N). Soils correspond to Andisols, Pollux series (Typic Hapludands). Established conditions were: terr...
Guardado en:
| Autores principales: | , |
|---|---|
| Lenguaje: | English |
| Publicado: |
Universidad de Tarapacá. Facultad de Ciencias Agronómicas
2015
|
| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292015000400005 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: | The structural condition of the soil and its relationship with pastures under different conditions in use soil were evaluated in the Simpson Valley, Aysén Region, Chile (45° 43 ' S, 72° 07'N). Soils correspond to Andisols, Pollux series (Typic Hapludands). Established conditions were: terrace in degraded natural pasture (TPD), terrace in well-kept planted pasture (TPBE), silvopasture (SP), degraded natural pasture on a hill site (LPD), and well-kept planted pasture on a hill site (LPBE). At depths of 5, 10 and 20 cm. Percentage of soil aggregation, macroaggregates (Y >0.25 mm), microaggregates (Y<0.25 mm), stability of aggregates (MWD mm) and Loss Index (IP g kg-1) were determined by wet sieving. The experimental design was a complete randomized in a split plot arrangement. Statistical differences were analyzed using Tukey's tests (p < 0.05). A high percentage of aggregation (77.8 ± 9.7) and a predominance of macroaggregates were observed in all treatments. Higher aggregate stability was observed in SP (> MWD), followed by TPBE and LPBE, while TPD and LPD showed lower levels of aggregate stability. IP correlated with MWD values (r = -0.723; R²=0.567). Soils presented good physical conditions but fragile nature. Silvopasture is a highly beneficial practice to maintain and improve soil physical conditions of the valley, followed by artificial pastures. |
|---|