Changes in Chemical and Biological Properties of the Soil at the Application of Advanced Technology for Minimum and Unconventional Tillage for Growing Wheat on Slopes

The need of development of sustainable agricultural systems requires soil protection from the effects of degradation processes and preservation of soil functions. The most significant degradation process is water erosion. Developed and tested are number of measures and technologies for protection of agricultural lands from water erosion. One of soil conservation technologies is unconventional minimum tillage, combining technological operations direct sowing and vertical mulching with organic wastes (straw and compost) that was created and tested in ISSAPP "N. Poushkarov "- Sofia. This paper presents some changes in chemical and biological indicators of soil at the application of advanced technology for minimum unconventional tillage for growing wheat on slope farmland