The problem of updating agricultural technology, particularly in the field of agriculture, is important for agriculture. Alternative technology solutions that meet the performance criteria are a prerequisite for successful economic activity.
The aim of the study is to determine the effect of the application of an agro-technical complex of events, which successfully supports the soil fertility of the Planosoils and the sustainable level of productivity of the field crops.
In the field experiment in the station for irrigation agricultural Pazardzhik Valley, in three-polar crop rotation maize-barley-rape are studied three factors – soil tillage system, mineral fertilization and ways of managing plant residues.
The study found that the moisture content of the soil was mainly influenced by the type of treatment applied (loosening as a main plow and plowing as a pre-sowing) and the use of plant residues. The over compaction found in the beginning of the experiment in the 25-40 cm layer is partly overcome by performing a deep rupture to the depth of 35 cm. Despite the short period of the study, there was a certain decrease in the content of digestible potassium forms. The results show the activation of the microbiological activity after planting of the plant residues – an increase of the amount of the cellulose microorganisms and of the ammonifiable bacteria, the most noticeable in the high fertilization rate and the intensive treatments. The main part in the formation of crop rotation productivity is mineral fertilization. The impact of the tillage system is more marked in the first year of maize and especially during the third year of rape. Lack of fertilization influences yields significantly in rapeseed compared to maize and barley.
- Arvidsson I., T. Keller, K. Gustafsson. (2003). Specific draught for mouldboard plough, chisel plough and disc harrow at different Water contents. Proceedings of 16th Trinnial ISTRO Conference, Brisbane, Australia, 43-48.
- Basitov, V. (2008). Energy productivity of field crop rotation on soil type Vertisoil in South central discrict. Plant science, 45, 360-363.(Bg).
- Dimitrоv, I., Мitovа, T. (1998). Influence of soil tillage system and fertilization on the productivity of crop rotation in irrigated conditions. Plant science, 35, 4, 270-276.
- Karlen, D., C. Cambardella, I. Kovar, T. Colvin. (2013). Soil quality response to long-term tillage and crop rotation practice. Soil and Tillage Research, 133, 54-64.
- Mitova, T., Stoinev, K., Dimitrov, I. (1999). Methodological Procedure for Assessment of Soil Tillage Systems in Sustainable Agriculture. Soil science, agrochemistry and ecology, № 6, 171-175.(Bg).
- Nikolova, D., Borisovа, M., Мitovа T., Dimitrоv, I. (2001). Influence of the di. Soil science, agrochemistry and ecology, 36 (4-6), 231-233.(Bg).
- Stoynev, K. (2004). Ecological and technological aspects of modern agriculture. Ecoinnovation Ltd., Sofia.(Bg).
- Terra, I., I. Shaw, D. Reeves. (2006). Soil management practices and landscape attribute impact on field-scale corn productivity. Proceedings of 17th Triennial ISTRO Conference, Kiel, Germany, 1275-1280.
- Toncheva, R., Dimitrov, I., Nikolova, D., Nenov, M. (2015). Investigation the Productivity of Maize in Different Agroecological Regions and Agrotechnical Treatments. II. Irrigated Conditions. Soil science, agrochemistry and ecology, № 4, 65-73.(Bg).
- Zarkov, B., Koteva, V. (2005). Productivity and efficiency of seven plots rotation. Proceedings of Bolkan Conference, Karnobat, 489- 493(Bg).