Facultad de Agronomia - UBA

Artículos FAUBA




Cover Image


Acceso al documento : Documento de Acceso Restringido. Disponible sólo para la Comunidad FAUBA.
URL al registro : http://ri.agro.uba.ar/cgi-bin/library.cgi?a=d&c=arti&d=2017silvestro
Tipo de material : Artículo
Autores : Silvestro, L. B.; Biganzoli, Fernando; Forján, Horacio José; Albanesi, A.; Arambarri, A. M.; Manso, L.; Moreno, M. V.
Título en inglés : Mollisol : biological characterization under zero tillage with different crops sequences
Fuente : Journal of Agricultural Science and Technology
Año : 2017
Volumen y número : Vol.19
Temas : BASAL RESPIRATION; ENZYME ACTIVITIES; MICROBIAL ACTIVITY; SOIL ORGANIC CARBON
Idioma : inglés
Descripción : tbls., grafs.
Páginas :  p.245-257
Resumen : Zero tillage practices have a direct effect on soil microbial communities modifying soil productivity and sustainability. The crop sequences used can change the aforementioned properties, too. In this study, we evaluated the effect of crop sequences under zero tillage management on soil biological and chemical properties including vertical distribution of soil organic carbon, soil basal respiration, and dehydrogenase, acid phosphatase, and urease activity along a seasonal year and at different soil depths. The sequences included in this study were: (I) Single crop per year (sunflower - wheat-sorghum - soybean); (II) Mixed agriculture/livestock with pastures, without using winter or summer forages (wheat sorghum/soybean - canola - pasture); (III) Winter management (wheat - canolabarley - late soybean); (IV) Mixed with annual feed crop (wheat - oat/Vicia sativa - soybean or sunflower), and (V) Intensive management (wheat-barley canola, with alternation of soybean or late soybean). Soil organic carbon decreased with increasing depth, depending on sequences (Pseq×depth= 0.0173). Soil basal respiration was higher in the 0-5 cm layer than in the 10-20 cm layer of the topsoil irrespective of the crop sequences (Pdepth= 0.0062). Dehydrogenase, acid phosphatase and urease activity were affected by crop sequences, sampling season, and depth. Mixed sequences (sequences II and IV), including perennial pastures or annual feed crop could favor dehydrogenase and phosphatase activity. Sequences with cover crops (sequences II and IV) could favor microbial activity and, therefore, improve soil quality.
Link al editor : http://www.modares.ac.ir
Cita recomendada : Silvestro, L. B.; Biganzoli, F.; Forján, H. J.; Albanesi, A.; Arambarri, A. M. ; Manso, L.; & Moreno, M. V. (2017). Mollisol : biological characterization under zero tillage with different crops sequences. Journal of Agricultural Science and Technology‚ 19‚ (1) p.245-257. 
 
Share