Runoff and soil loss under different tillage methods on Stagnic Luvisols in central Croatia

Owing to humid climate and unfavourable relief, the problem of extensive so il erosion in central Croatia is of prime importance. The main objective of this research was to determine how soil erosion is influenced by deep (30 cm) soil tillage practised for deep-rooted row crops in comparison with oth er tillage methods, on Stagnic Luvisols. Soil loss quantity was recorded du ring the 4-year investigation cycle (1994-1998), under common field crops g rown under six tillage methods. Appreciably higher rates of soil erosion we re recorded in low-density row spring crops than in high-density winter cro ps under the same tillage methods. The time immediately following the sowin g of spring crops was the most critical period, i.e. the period when highes t soil loss occurs. The results showed that erosion processes cannot be com pletely stopped; however, they can be reduced to an acceptable level by an appropriate tillage method. Efficient soil conservation on Stagnic Luvisols was achieved by no-tillage and all across the slope tillage methods. (C) 2 001 Elsevier Science B.V. All rights reserved.