Arvidsson, Johan
- Institutionen för mark och miljö, Sveriges lantbruksuniversitet
Sammanfattning
The objective of this study was to evaluate the effects of different mechanical loads on soil physical properties of a Eutric Cambisol with loam sandy texture. The soil load distribution (kPa) was measured in situ by sensors placed in different soil layers. The soil physical properties evaluated were the bulk density (Ds) and the soil penetration resistance (RP) on sugarbeet (Beta vulgaris L.) row and interrow down to 0.30 m depth. The treatments were: without extra pressure exerted by the sowing machine, or no-compaction (SC); low pressure exerted by the sowing machine, named low load (BC); high pressure exerted the sowing machine, named high load (AC) and load pressure exerted by the tractor wheels used in the seedbed preparation, or tractor load (CT). The soil load distribution data indicated that the 0-0.10 m layer had soil stresses values higher than 120 kPa, which are considered very high. The increase on soil stresses from treatments SC to AC caused higher stress on topsoil than in the 0.10-0.20 m depth, while that under CT treatment showed higher stress at the 0.10-0.20 m layer. As a consequence of the soil stress load it was verified an increase on Ds in the more superficial soil layer (0-10 cm), and it followed the sequence: SC
Nyckelord
soil compaction; bulk density; resistance to penetration; seedbed
Publicerad i
Revista Brasileira de Ciência do Solo
2009, volym: 33, nummer: 3, sidor: 477-485
Utgivare: SOC BRASILEIRA DE CIENCIA DO SOLO
SLU författare
UKÄ forskningsämne
Jordbruksvetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1590/S0100-06832009000300001
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/49435