Agrotechnical Impacts on the Physical Characteristic of the Soil and Ways to Remove the Negative Changes. I. Under Non-irrigation Conditions

I. Dimitrov, M. Nenov, N. Traikov, R. Toncheva, I. Gerasimova

Abstract: Physical characteristic of the soil is essential for the development of the reproductive potential of agricultural crops. Modern scientific research has shown that the cultivation of soil as a lean system within crop rotation is the basis for overcoming the negative changes in the physical parameters of the main soil differences.
The aim of the study is to determine the effect on some basic physical parameters of the combined impact of agricultural machinery in the performance of agrotechnical measures as well as the possibilities of removing negative changes through new solutions in soil treatment and other technological operations.
Triennial studies have found that there is an agrothechnical impact on the physical characteristics of the soil. The moisture content of the soil is mainly influenced by the intake of rain water. In some phases of the cultivation of crops there is established a dependence on the type of applied soil tillage system. Bulk density is the most dynamically changing physical parameter. The over compaction at the beginning of the experiment in the 25 – 35 cm layer was successfully overcome by applying a deep loosening under the depth of the compacted soil layer. It has been confirmed from previous studies that soil compaction has an overlapping effect and that overcoming cannot be relied the natural factor – solely on freezing and defrosting the soil in the plaugth layer.

Keywords: crop rotation; non-irrigation conditions; physical parameters of soil; soil compaction

Date published: 2017-07-26