Prácticas de conservación para reducir inundaciones
- Vettorello, Cecilia Inés
- Clemente, Juan Pablo
- Esmoriz, Gustavo Francisco
- Díaz, Carola Celeste
- Cotorás, Daniel Antonio
- Molina, Lucas
- Cortez, Luciano
ISSN: 1852-2181
Year of publication: 2017
Issue Title: Especial de Aguas II
Volume: 9
Issue: 2
Pages: 37-52
Type: Article
More publications in: AUGMDOMUS
Abstract
Rainfall in semiarid environments is intense and produces runoff. In sloppy areas, conservational systems based on agricultural rotation should be complemented by parallel drainage terraces. The purpose of this study was to evaluate the effects of conservation practices according to hydrological parameters and cultures from two microwatersheds in the semiarid area of the Province of Córdoba.One microwatershed has parallel drainage terraces (SIST) and the other microwatershedis not systematic (NOSIST). Both had direct seeding and crop rotation. The average rainfall is 760 mm per year and the soil is Typical Haplustol. The increased frequency of extreme events caused by climate change affects the volume of runoff. NOSIST had runoff losses of 52 and 27% compared to the rainfall recorded in two events while the SIST was only 2 and 9%.In turn, NOSIST had biomass of soybean, corn and rye 55%, 24 %and 38% lower, respectively. In conclusion, engineering conservation practices combined with crop rotation significantly reduce floods and improve production through a better use of water.