Estudio de la influencia de la cobertura vegetal viva en olivar en la contaminación de las aguas de escorrentía por nitratos

Content Provider	Semantic Scholar
Author	Lizana, Antonio Rodríguez Ordóñez, R. Pérez, Antonio Jesús Espejo González, P. Peña Cervera, Juan Vicente Giráldez
Copyright Year	2005
Abstract	It is compared the effect of two different soil management systems, plant cover and conventional tillage, in the nitrate losses in runoff water on a net composed by eight experimental fields located in Andalusia during the period June 2003-June 2004 in order to quantify the influence of the management sistem over the pollutants dispersion in the environment. Runoff, with a direct relationship with the transport of nitrate, significativelly decreases in 6 of the 8 plots when plant cover is introduced (average 16%). The organic matter increase that take place in the surface with cover crop in comparison with the conventional tillage give rise to two behavior patterns of the surface nitrate and of the losses of this anion depending on the cover percentage. Plant cover reduces an average 40% the annual losses of this anion in 7 of the 8 analized fields in both fertilized plots (p=0.02) and not fertilized plots (p=0.06). Reductions are higher in the fertilized plots (61% average) than in the others (26%). Transference rate of the pollutant to runof water is very variable depending on the plot, oscillating from 0,03 to 1,43 Kg NO3haL. Results suggest that living plant covers are efficient to disminish nitrate contamination in surface water and runof water losses.
Starting Page	81
Ending Page	86
Page Count	6
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://abe.ufl.edu/faculty/carpena/files/pdf/zona_no_saturada/estudios_de_la_zona_v7/c081-086.pdf
Alternate Webpage(s)	http://www.zonanosaturada.com/zns05/publications_files/area_1/14.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article