| dc.creator | Souza, Elisângela Dutra de | |
| dc.creator | Costa, Sérgio Ely Valadão Gigante de Andrade | |
| dc.creator | Anghinoni, Ibanor | |
| dc.creator | Carneiro, Marco Aurélio Carbone | |
| dc.creator | Martins, Amanda Posselt | |
| dc.creator | Bayer, Cimélio | |
| dc.date | 2015-12-10T12:03:48Z | |
| dc.date | 2015-12-10T12:03:48Z | |
| dc.date | 2014-02-01 | |
| dc.date.accessioned | 2023-09-28T20:05:39Z | |
| dc.date.available | 2023-09-28T20:05:39Z | |
| dc.identifier | SOUZA, E. D. de. Soil quality indicators in a Rhodic Paleudult under long term tillage systems. Soil & Tillage Research, Amsterdam, v. 139, p. 28-36, 2014. | |
| dc.identifier | http://www.sciencedirect.com/science/article/pii/S0167198714000130 | |
| dc.identifier | http://repositorio.ufla.br/jspui/handle/1/10680 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/9044292 | |
| dc.description | Many investigations have focused in defining soil quality indicator components. However, for
understanding better the impact of soil tillage systems on soil quality, a broader approach is demanded,
with simultaneous soil attributes evaluations, by using multivariate analysis. The objective of this
experiment was to evaluate the long-term effect of two tillage systems on the soil C and N stocks in
comparison to those of native grassland and to identify the most suitable soil attributes for
characterizing soil quality. The experiment was established in 1988 at the Agronomic Experimental
Station of the Federal University of Rio Grande do Sul, Southern Brazil. Treatments consisted of two
tillage systems (no-tillage and conventional tillage) and a reference area under native grassland. Soil
analysis was performed up to 20 cm. Soil organic matter, C and N, physical fractionation was performed
and carbon management index calculated. Microbial biomass C and N was determined as well as soil
aggregate stability. From soil aggregation, soil average diameters and mass were grouped, and classes
determined to calculate mean weight diameter. After 18 years, conventionally tilled soil showed lower
total C and N stocks in comparison to no-tilled soil, which did not differ from native grassland soil. Soil C
stocks ranged from 44.3 to 34.1 Mg ha1 for the native grassland and conventional tillage system and
total nitrogen ranged from 5.2 to 4.1 Mg ha1 for the native grassland and no-tillage system, in the 0–
20 cm layer. Among the tested soil quality indicators, the microbial biomass-C, total and particulate C
stocks, particulate C and N stocks, and mean weight diameter were the indexes that best indicated soil
tillage system effects, and they are therefore recommended for future use in evaluating soil quality. | |
| dc.language | en | |
| dc.publisher | Universidade Federal de Lavras | |
| dc.rights | restrictAccess | |
| dc.source | Soil & Tillage Research | |
| dc.subject | No tillage | |
| dc.subject | Conventional tillage | |
| dc.subject | Carbon management index | |
| dc.subject | Soil aggregation | |
| dc.title | Soil quality indicators in a Rhodic Paleudult under long term tillage systems | |
| dc.type | Artigo | |
