1. Ahmad, M., Abdullah, H., Iqbal, M., Umair, M. and Ghani, M. U. 2010. Effect of Deep Tillage on Soil Properties and Crop (Wheat) Yield. Soil Environ., 29: 177-180.
2. Al-Kaisi, M. M., Yin, X. and Licht, M. A. 2005. Soil Carbon and Nitrogen Changes as Influenced by Tillage and Cropping Systems in some Iowa Soils. Agric. Ecosyst. Environ., 105: 635-647.
3. Álvaro-Fuentes, J., Morell, F. J., Madejón, E., Lampurlanés, J., Arrúe, J. L. and Cantero-Martínez, C. 2013. Soil Biochemical Properties in a Semiarid Mediterranean Agro-ecosystem as Affected by Long-term Tillage and N Fertilization. Soil. Till. Res., 129: 69-74.
4. Arvidsson, J., Etana, A. and Rydberg, T. 2014. Crop Yield in Swedish Experiments with Shallow Tillage and No-tillage 1983–2012. Europ. J. Agron., 52: 307-315.
5. Arvidsson, J., Westlin A. and Sörensson F. 2013. Working Depth in Non-inversion Tillage – Effects on Soil Physical Properties and Crop Yield in Swedish Field Experiments. Soil Till. Res., 126: 259-266.
6. Atkinson, B. S., Sparkes, D. I. and Mooney, S. J. 2009. The Impact of Soil Structure on the Establishment of Winter Wheat. Europ. J. Agron., 30: 243-257.
7. Aziz, I., Mahmood, T. and Islam, K. R. 2013. Effect of Long Term No-till and Conventional Tillage Practices on Soil Quality. Soil Till. Res., 131: 28-35.
8. Bengough, A. G. and Mullins, C. E. 1990. Mechanical Impedance to Root Growth: A Review of Experimental Techniques and Root Growth Responses. J. Soil Sci., 41: 341-358.
9. Blake, G. R. and Hartge, K. H. 1986. Bulk Density. Part 1. Physical and Mineralogical Methods. In: “Methods of Soil Analysis”. 2nd Edition, Agronomy Monograph #9, Soil Sci. Soc. Am. PP. 374-380.
10. Blanco-Canqui, H., Lal, R., Owens, L.B., Post, W. M. and Izaurralde, R. C. 2005. Strength Properties and Organic Carbon of Soil in the North Appalachian Region. Soil Sci. Soc. Am. J., 69: 663-673.
11. Blecharczyk, A., Małecka, I., Sierpowski, J. 2007. Long-term Effects of Tillage Systems on Physico-chemical Soil Properties. Fragm. Agron., 24: 7-13. (in Polish, Abstract in English)
12. Boydaş, M. G. and Turgut, N. 2007. Effect of Tillage Implements and Operating Speeds on Soil Physical Properties and Wheat Emergence. Turk. J. Agric. For., 31: 399-412.
13. D’Haene, K., Vermang, J., Cornelis, W. M., Leroy, B. L. M., Schiettecatte, W., De Neve, S., Gabriels, D. and Hofman, G. 2008. Reduced Tillage Effects on Physical Properties of Silt Loam Soils Growing Root Crops. Soil Till. Res., 99: 279-290.
14. Derpsch, R. 2007. The No-tillage Revolution in South America. Proceedings of the Conference on Farm Technology, 24-26 January, 2007, Edmonton, Alberta, PP. 54-68.
15. Fernández, R. O., Fernández, P. G., Cervera, J. V. G. and Torres, F. P. 2007. Soil Properties and Crop Yields after 21 Years of Direct Drilling Trials in Southern Spain. Soil Till. Res., 94: 47-54.
16. Franzluebbers, A. J. 2002. Soil Organic Matter Stratification Ratio as an Indicator of Soil Quality. Soil Till. Res., 66: 95-106.
17. Hajabbasi, M. A. 2001. Tillage Effects on Soil Compactness and Wheat Root Morphology. J. Agr. Sci. Techn., 3: 67-77.
18. Hemmat, A. 2009. Reduction in Primary Tillage Depth and Secondary Tillage Intensity for Irrigated Canola Production in a Loam Soil in Central Iran. J. Agr. Sci. Tech., 11: 275-288.
19. Holland, J. M. 2004. The Environmental Consequences of Adopting Conservation Tillage in Europe: Reviewing the Evidence. Agric. Ecosyst. Environ., 103: 1-25.
20. Husnjak, S., Filipović, D. and Košutić, S. 2002. Influence of Different Tillage Systems on Soil Physical Properties and Crop Yield. Rostl. Vyr., 48: 249-254.
21. Jug, I., Jug, D., Stipešević, B. and Stošić, M. 2011. Winter Wheat Yield and Yield Components as Affected by Soil Tillage Systems. Turk. J. Agric. For., 35: 1-7.
22. Karlen, D. L., Cambardella, C. A., Kovar, J. L. and Colvin, T. S. 2013. Soil Quality Response to Long-term Tillage and Crop Practices. Soil Till. Res. 133: 54-64.
23. Katsvairo, T., Cox, W. J. and Van Es, H. 2002. Tillage and Rotation Effects on Soil Physical Characteristics. Agron. J., 94: 299-304.
24. Košutić, S., Filipović, D., Gospodarić, Z., Husnjak, S., Kovačev, I. and Čopec, K. 2005. Impact of Different Soil Tillage Systems on Maize, Winter Wheat and Soybean Production on Albic Luvisol in North-west Slavonia. J. Cent. Europ. Agri., 6: 241-248.
25. Levyk, V., Maryskevych, O., Brzezińska, M. and Włodarczyk, T. 2007. Dehydrogenase Activity of Technogenic Soils of Former Sulphur Mines (Yavoriv and Nemyriv, Ukraine). Int. Agrophys., 21: 255-260.
26. Lipiec, J., Kuś, J., Słowińska-Jurkiewicz A. and Nosalewicz, A. 2006. Soil Porosity and Water Infiltration as Influence by Tillage Methods. Soil. Sci. Res., 89: 210-220.
27. López-Bellido, L. L., López-Bellido, R. J., Castillo, J. E. and López-Bellido, F. 2000. Effect of Tillage, Crop Rotation, and Nitrogen Fertilization on Wheat under Rainfed Mediterranean Conditions. Agron. J., 92: 1054-1063.
28. López-Fando, C. and Pardo M. T. 2009. Changes in Soil Chemical Characteristics with Different Tillage Practices in a Semi-arid Environment. Soil Till. Res., 104: 278-284.
29. Madejón, E., Moreno, F., Murillo, J. M. and Pelegrín, F. 2007. Soil Biochemical Response to Long-term Conservation Tillage under Semi-arid Mediterranean Conditions. Soil Till. Res., 94: 346-352.
30. Małecka, I., Blecharczyk, A., Sawinska, Z. and Dobrzeniecki, T. 2012. The Effect of Various Long-term Tillage Systems on Soil Properties and Spring Barley Yield. Turk. J. Agric. For., 36: 217-226.
31. McVay, K. A., Budde, J. A., Fabrizzi, K., Mikha, M. M., Rice, C. W., Schlegel, A. J., Peterson, D. E., Sweeney, D. W. and Thompson, C. 2006. Management Effects on Soil Physical Properties in Long-term Tillage Studies in Kansas. Soil. Sci. Soc. Am. J., 70: 434-438.
32. Melero, S., Panettieri, M., Madejón, E., Gómez Macpherson, H., Moreno, F. and Murillo, J. M. 2011. Implementation of Chiselling and Mouldboard Ploughing in Soil after 8 Years of No-till Management in SW, Spain: Effect on Soil Quality. Soil Till. Res., 112: 107-113.
33. Melero, S., Vanderlinden, K., Ruiz, J. C. and Madejón, E. 2009. Soil Biochemical Response after 23 Years of Direct Drilling under a Dryland Agriculture System in Southwest Spain. J. Agric. Sci., 147: 9-15.
34. Morris, N. L., Miller, P. C. H., Orson, J. H. and Froud-Williams, R. J. 2010. The Adoption of Non-inversion Tillage Systems in the United Kingdom and the Agronomic Impact on Soil, Crops and the Environment: A Review. Soil Till. Res., 108: 1-15.
35. Özpinar, S. and Çay, A. 2005. Effects of Minimum and Conventional Tillage Systems on Soil Properties and Yield of Winter Wheat (Triticum aestivum L.) in Clay-loam in the Çanakkale Region. Turk. J. Agric. For., 29: 9-18.
36. Ozpinar, S. and Ozpinar, A. 2011. Influence of Tillage and Crop Rotation Systems on Economy and Weed Density in a Semi-arid Region. J. Agr. Sci. Tech., 13: 769-784.
37. Page, A. L., Miller, R. H. and Keeney, D. R. 1982. Methods of Soil Analysis. Part 2. Chemical and Microbiological Properties, 2nd Edition, Am. Soc. Agron., Soil Sci. Soc. Am., Madison,Wisconsin.
38. Rahman, M. H., Okubo, A., Sugiyama, S. and Mayland, H. F. 2008. Physical, Chemical and Microbiological Properties of an Andisol as Related to Land Use and Tillage Practice. Soil Till. Res., 101: 10-19.
39. Rieger, S., Richner, W., Streit, B., Frossard, E. and Liedgens, M. 2008. Growth, Yield, and Yield Components of Winter Wheat and the Effects of Tillage Intensity, Preceding Crops, and N Fertilization. Europ. J. Agron., 28: 405-411.
40. Romaneckas, K., Avižienyte, D., Šarauskis, E., Martinkus, M., Pilipavićius, V., Adamavićiene, A. and Sakalauskas, A. 2012. Impact of Ploughless Tillage on Soil Physical Properties and Winter Wheat Productivity. J. Food Agric. Environ., 10: 501-504.
41. Shi, X. H., Yang, X. M., Drury, C. F., Reynolds, W. D., McLaughlin, M. B. and Zhang, X. P. 2012. Impact of Ridge Tillage on Soil Organic Carbon and Selected Physical Properties of a Clay Loam in Southwestern Ontario. Soil Till. Res., 120: 1-7.
42. Šíp, V., Vavera, R., Chrpová, J., Kusá, H. and Ružek P. 2013. Winter Wheat Yield and Quality Related to Tillage Practice, Input Level and Environmental Conditions. Soil Till. Res. 132: 77-85.
43. Soane, B. D., Ball, B. C., Arvidsson, J., Basch, G., Moreno, F. and Roger-Estrade, J. 2012. No-till in Northern, Western, and South-western Europe: A Review of Problems and Opportunities for Crop Production and the Environment. Soil Till. Res., 118: 66-87.
44. Swędrzyńska, D., Małecka, I., Blecharczyk, A., Swędrzyński, A. and Starzyk, J. 2013. The Effect of Various Long-term Tillage Systems on Some Chemical and Biological Properties of Soil. Pol. J. Environ. Stud., 22: 1835-1844.
45. Tabatabai, M. A. and Bremner, J. M. 1969. Use of p-Nitrophenyl Phosphate for Assay of Soil Phosphatase Activity. Soil Biol. Biochem., 1: 301-307.
46. Thalmann, A. 1968. Zur Methodik der Bestimmung der Dehydrogenase Aktivität in Boden Mittels TriphenylTetrazoliumChlorid (TTC). Landwirtsch. Forsch., 21: 249-258.
47. Thomas, G. A., Dalal, R. C. and Standley, J. 2007. No-till Effects on Organic Matter, pH, Cation Exchange Capacity and Nutrient Distribution in a Luvisol in the Semi-arid Subtropics. Soil. Till. Res., 94: 295-304.
48. Ulrich, S., Tischer, S., Hofmann, B. and Christen, O. 2010. Biological Soil Properties in Long-term Tillage Trial in Germany. J. Plant Nutr. Soil Sci., 173: 483-489.
49. Urbanek, E. and Horn, R. 2006. Changes in Soil Organic Matter, Bulk Density and Tensile Strength of Aggregates after Percolation in Soils after Conservation and Conventional Tillage. Int. Agrophys., 20: 245-254.
50. Woźniak, A. and Kwiatkowski, C. 2013. Effect of Long-term Reduced Tillage on Yield and Weeds of Spring Barley. J. Agr. Sci. Tech., 15: 1335-1342.
51. Zadoks, J. C., Chang, T. T. and Konzak, C. F. 1974. A Decimal Code for the Growth Stages of Cereals. Weed Res., 14: 415-421.