Konferenzpaper

Jahr der Veröffentlichung: 1998

Konferenz: ASAE Annual International Meeting

Abstract: 

The impact of intensive soil tillage treatments on soil physical properties is described. Tillage intensity of the systems considered decreases in the following sequence: conventional plough tillage (CT), reduced tillage (RT), and no-tillage (NT). The experiments are based on comparative application (long-term, up to 18 years of investigations) of the respective tillage options on different soils located at five field sites with different crop rotations in Hesse, Germany. For elucidating the impact of tillage intensity, the tillage extremes CT and NT are compared. However, physical conditions of soil as influenced by the application of RT are intermediate between CT and NT. In general, bulk density in the upper layer of NT soils is increased, resulting in a decrease in the amount of coarse pores, and a lower hydraulic conductivity when compared with the CT and RT soils. Conditions in the long-term undisturbed soils of the NT treatment favour crop production only when improved knowledge and management practice by the farmer is guaranteed. Surface cover by crop residues, higher aggregate stability, and increased infiltration rates under NT protect soil fertility by avoiding surface sealing and erosion. Lateral losses of herbicides are also reduced under NT conditions, whereas their preferential vertical transport needs to be evaluated. Accumulation of organic matter and nutrients near the soil surface under NT and RT occurs by not inverting the soil and by maintaining a mulch layer on the surface. Those improvements accompany enhanced biological activities in NT and RT top soils. Increased earthworm activity (NT treatments) increases macroporosity which improves water infiltration rates and supports decomposition and incorporation of straw. Soils which have not been tilled for many years are more resistant to vehicle passage; consequently, compaction by traffic is lower. Penetration resistance curves indicate that a uniformly stable structure has developed over the years in NT soils. Economical effects of different tillage systems are also assessed.

Harvard-Zitierstil: Tebrügge, F., Böhrnsen, A. and Düring, R. (1998) Interactions between different soil tillage intensity on soil properties with consideration of environmental and economical benefits, ASAE Annual International Meeting, Orlando, Florida, 12 - 16 July, 1998

APA-Zitierstil: Tebrügge, F., Böhrnsen, A., & Düring, R. (1998, 12 - 16 July, 1998). Interactions between different soil tillage intensity on soil properties with consideration of environmental and economical benefits. ASAE Annual International Meeting, Orlando, Florida.