No tillage and increase on soil organic matter content in small farms of Teutonia county, Southern Brazil

Ciência Rural

Bayer, Cimélio²  Scheneider, Nestor Guilherme¹ 

[1] Clube Amigos da Terra-Regional Teutônia, Teutônia;UDESC, Lages

关键词: organic matter;    soil management;    soil conservation;   

DOI  :  10.1590/S0103-84781999000100030

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The objetive of this study was to evaluate the effect of management systems on soil organic matter contents. Soil samples were collected at 0-2.5, 2.5-5.0, 5.0-10.0 and 10.0-20.0cm depth in native grassland area and croplands under conventional and no tillage systems. Soil sample collected from a forest area were used as reference of the original soil condition of the region. The use of conventional tillage decreased soil organic matter contents approximately 60-70% in the 0-2.5cm soil layer, and approximately 50% in the 0-10.0cm soil layer, relativelly to the forest soil. The use of no tillage for 3-7 years resulted in increases of soil organic matter content of 25-108% in 0-2.5cm soil layer, and 18-52% in 0-10cm soil layer, comparativelly to the conventional soil tillage.

【 授权许可】

CC BY-NC