Author | dc.contributor.author | Curaqueo, Gustavo | |
Author | dc.contributor.author | Acevedo Hinojosa, Edmundo | es_CL |
Author | dc.contributor.author | Cornejo, Pablo | es_CL |
Author | dc.contributor.author | Seguel, Alex | es_CL |
Author | dc.contributor.author | Rubio, Rosa | es_CL |
Author | dc.contributor.author | Borie, Fernando | es_CL |
Admission date | dc.date.accessioned | 2010-06-17T14:28:02Z | |
Available date | dc.date.available | 2010-06-17T14:28:02Z | |
Publication date | dc.date.issued | 2010 | |
Cita de ítem | dc.identifier.citation | R.C. Suelo Nutr. Veg. 10(1): 12 - 21 (2010) | en_US |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/120163 | |
Abstract | dc.description.abstract | Arbuscular mycorrhizal fungi (AMF) and their product glomalin (GRSP) play a
decisive role in the soil aggregation, affecting the carbon (C) dynamics in
agroecosystems. Tillage affects the AMF activity and GRSP content, influencing the
stability and the soil C forms as well. The aim of this study was to compare the effect of
no tillage (NT) and conventional tillage (CT) on: i) arbuscular mycorrhizal hyphal
length and GRSP content; ii) the nature of soil organic matter by means of physical
fractionation (free particulate organic matter [fPOM]; occluded particulate organic
matter [oPOM] and mineral-associated soil organic matter [Mineral]), as well as
chemical fractionation (fulvic acid, humic acid and humin), and iii) the relationships
between AMF parameters, soil carbon and water stable aggregates (WSA) in a
Mollisol of Central Chile managed for 6 years under NT and CT using a wheat-corn
rotation. Higher values in the AMF hyphal length, GRSP and WSA in NT compared
with CT were observed. Significant relationships were found between GRSP and WSA
(r = 0.66, p < 0.01) and total mycelium and GRSP (r = 0.58, p< 0.05). The total carbon
increased 44% under NT compared with CT. The chemical fractionation showed
percentage greater than 95% for humim in both treatments. Physical fractionation
indicates that the higher part of the SOC (89.4 - 95.1%) was associated with the mineral
fraction. | en_US |
Patrocinador | dc.description.sponsorship | The authors thank to National
Commission for Scientific and
Technological Research (FONDECYT
1060372 Project) and MECESUP Grant
(FRO0309) by financial support for this
research ... | en_US |
Lenguage | dc.language.iso | en | en_US |
Keywords | dc.subject | Agroecosystem | en_US |
Título | dc.title | TILLAGE EFFECT ON SOIL ORGANIC MATTER, MYCORRHIZAL HYPHAE AND AGGREGATES IN A MEDITERRANEAN AGROECOSYSTEM | en_US |
Document type | dc.type | Artículo de revista | |