Artículos de revistas
Preferences and Willingness to pay for table grapes in the region of Maule, Chile
Registro en:
REVISTA BRASILEIRA DE FRUTICULTURA Volume: 33 Issue: 3 Pages: 784-790
0100-2945
Autor
Urrutia, AAC (Cerda Urrutia, Arcadio Alberto)1; Perez, LYG (Garcia Perez, Leidy Yomary); Cancino, JCG (Gonzalez Cancino, Johanna Carolina)2; Nunez, AIS (Salvatierra Nunez, Ashley Ignacio
Institución
Resumen
Urrutia, AAC (Cerda Urrutia, Arcadio Alberto)Univ Talca, Fac Ciencias Empresariales, Ctr Desarrollo Empresarial, Talca, Chile Chilean dryland areas of the Mediterranean climate region are characterized by highly degraded and compacted soils,
which require the use of conservation tillage systems to mitigate water erosion as well as to improve soil water storage. An
oat (Avena sativa L. cv. Supernova-INIA) - wheat (Triticum aestivum L. cv. Pandora-INIA) crop rotation was established
under the following conservation systems: no tillage (Nt), Nt + contour plowing (Nt+Cp), Nt + barrier hedge (Nt+Bh), and
Nt + subsoiling (Nt+Sb), compared to conventional tillage (Ct) to evaluate their influence on soil water content (SWC)
in the profile (10 to 110 cm depth), the soil compaction and their interaction with the crop yield. Experimental plots were
established in 2007 and lasted 3 yr till 2009 in a compacted Alfisol. At the end of the growing seasons, SWC was reduced
by 44 to 51% in conservation tillage systems and 60% in Ct. Soil water content had a significant (p < 0.05) interaction with
tillage system and depth; Nt+Sb showed lower SWC between 10 to 30 cm, but higher and similar to the rest between 50
to 110 cm except for Ct. Although, SWC was higher in conservation tillage systems, the high values on soil compaction
affected yield. No tillage + subsoiling reduced soil compaction and had a significant increment of grain yield (similar to
Ct in seasons 2008 and 2009). These findings show us that the choice of conservation tillage in compacted soils of the
Mediterranean region needs to improve soil structure to obtain higher yields and increment SWC.