Westlin, Aron
- Institutionen för mark och miljö, Sveriges lantbruksuniversitet
Sammanfattning
Good soil structure is important to have the right conditions for good crop development. In two field experiments, R2-4111 and R2-7115, the soil structure has been examined by a number of parameters. Project R2-4111, started in 1999, investigates how the time of primary tillage affects the yield. Both tillage with a mouldboard plough and a stubble cultivator is tested at three different occasions, called early, normal and late tillage. Project R2-7115, started in 1997, investigates how the tire inflation pressure affects the yield. Tillage with a mouldboard plough and a stubble cultivator tested with normal and low inflation pressures in the tires, also a treatment with permanent grassland is used as a comparison. Parameters that were compared were hydraulic conductivity, bulk density, tensile strength, aggregate stability, penetration resistance and the quality of the seedbed. Draught requirement was measured at each primary tillage occasion. The results showed no major differences in soil properties depending on tillage time or tire inflation pressure, but there were trends that the soil structure was poorer in treatments with normal inflation pressure and late tillage.. Distinct differences were found between mouldboard plough and stubble cultivator treatments for some of the parameters. The stubble cultivated treatment had a higher proportion of soil aggregates >5 mm and lower proportion of aggregates
Nyckelord
jordbearbetning; markstruktur; växtplats; ringtryck; bearbetningssystem; bearbetningstidpunkt; markfysikaliska parametrar
Publicerad i
Meddelanden från Jordbearbetningsavdelningen
2006, nummer: 53
Utgivare: Institutionen för markvetenskap, Avdelningen för jordbearbetning, Sveriges lantbruksuniversitet
SLU författare
UKÄ forskningsämne
Jordbruksvetenskap
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/30833