Konferenzpaper

Jahr der Veröffentlichung: 1998

Konferenz: ASAE Annual International Meeting

Abstract: 

This paper focuses the possibilities of reduced and no-tillage systems to counteract soil degradation through erosion and the excessive mineralization of soil organic matter in Mediterranean climatic conditions with rainfall concentration during winter and high annual mean temperatures. Soil loss through erosion is discussed for rainfed winter crops and summer-irrigated crops. Long-term effects of different tillage systems on soil organic matter and biological activity are presented. Data from several field sites show that severe soil erosion can occur under rainfed and irrigated conditions and that the amount of soil losses is positively related to tillage intensity. Soil tillage contributes considerably to the low organic matter content of the soils under Mediterranean conditions. A lower mineralization rate under no-tillage allows the increase of soil organic matter within a few years. Water conservation in agricultural systems comprehends both the amount and quality of water lost through surface runoff as well as the water percolating through the soil. The data presented and discussed show that the reduction of tillage intensity decreases surface runoff and the amount of sediment loss. At the same time the concentration of herbicides in the runoff water is reduced due to a higher degradation rate and fixation to the soil organic matter.

Harvard-Zitierstil: Basch, G., Carvalho, M. and Düring, R. (1998) Soil and water conservation tillage systems in Mediterranean crop production, ASAE Annual International Meeting, Orlando, Florida, 12 - 16 July, 1998

APA-Zitierstil: Basch, G., Carvalho, M., & Düring, R. (1998, 12 - 16 July, 1998). Soil and water conservation tillage systems in Mediterranean crop production. ASAE Annual International Meeting, Orlando, Florida.