engleski

Effects of soil tillage on quality of soil loss

Quantity and quality of soil loss was measured on Stagnic Luvisol under six tillage treatments in the Central Croatia during the 15-year investigation cycle (1995-2010). The trial involved the following tilling treatments: 1. Black fallow ; 2. Tillage up and down the slope ; 3. No-tillage ; 4. Tillage across of the slope ; 5. Very deep ploughing (till 60 cm) and 6. Subsoiling to the depth of 60 cm + tillage across of the slope. The intention was to establish whether there is a difference between the soil texture and chemical properties of natural, not eroded soil and soil loss removed from the trial plots. The results obtained point to the conclusion that soil loss was very often richer in colloids, that is to say in clay particles. Since more colloid fraction particles were determined in the texture of soil loss, and since due to its large active surface the colloid fraction is the main nutrient carrier in soil, it is realistic to expect great diversity of chemical properties. A somewhat higher soil pH, higher soil organic matter, higher ion exchange capacity and a larger amount of available phosphorus and potassium were regularly determined in soil loss. Some kind of minimum tillage and tillage across of slope are recommended as efficient practices of sustainable land management on erosion threatened Stagnic Luvisol.

erosion; soil loss

nije evidentirano