The paper presents the results of an analysis of the influence of soil bulk density in a forest nursery plot on the growth and quality parameters of Scots pine and European beech seedlings. Particular density variants were obtained using a tractor device exerting controlled pressure on the soil, while field examinations were performed on an area of ‘Kłaj’ forest nursery in Niepołomice Forest District. Three series of plots were prepared for each species, applying a unit pressure of the values of 50, 100, 150, 200, 250 kPa, corresponding to the dry bulk density in the range of 1.03-1.19 g cm-3, and control plots without the pressure. Seeds of the examined species were sown on the prepared plots, and after 6 months of growth the seedlings were subjected to biometric analysis determining differentiation in root neck diameter, length of the above-ground part and root system, as well as dry mass of particular parts of the plant. The quality of the seedlings was also determined using the method of Schmidt-Vogt. The results obtained show that the change in dry bulk density soil significantly affected most of the growth parameters of the examined seedlings. Especially high negative correlations were obtained for the length and dry mass of the root system. A significant influence of dry bulk density variant on all growth parameters of Scots pine seedlings, and on some parameters of European beech was demonstrated. An increase in soil bulk density clearly caused also a deterioration of European beech seedlings quality
Alameda D., Anten N.P.R., and Villar R., 2012. Soil compaction effects on growth and root traits of tobacco depend on light, water regime and mechanical stress. Soil Till. Res., 120, 121-129.
Ampoorter E., Goris R., Cornelis W., M., and Verheyen K., 2007.Impact of mechanized logging on compaction status of sandy forest soils. Forest Ecol. Manag., 241, 162-174.
Balakhnina T., Bennicelli R., Stępniewska Z., Stępniewski W., Borkowska A., and Fomina I., 2012. Stress responses of spring rape plants to soil flooding. Int. Agrophys., 26, 347-353.
Bartholomew P.W. and Williams R.D., 2010. Effects of soil bulk density and strength on seedling growth of annual ryegrass and tall fescue in controlled environment. Grass Forage Sci., 65, 348-357.
Bejarano M.D., Villar R., Murillo A.M., and Quero J.L., 2010. Effects of soil compaction and light on growth of Quercus pyrenaica Willd. (Fagaceae) seedlings. Soil Till. Res., 110, 108-114.
Blouin V. M., Schmidt M.G., Bulmer C.E., and Krzic M., 2008. Effects of compaction and water content on lodgepole pine sidling growth. Forest Ecol. Manag., 255, 2444-2452.
Chen G. and Weil R., 2010. Penetration of cover crop roots through compacted soils. Plant Soil, 331, 31-43.
Chen G. and Weil R., 2011. Root growth and yield of maize as affected by soil compaction and cover crops. Soil Till. Res., 117, 17-27.
Cubera E., Moreno G., and Solla A., 2009. Quercus ilex root growth in response to heterogeneous conditions of soil bulk density and soil NH4-N content. Soil Till. Res., 103, 16-22.
Cudzik A., Białczyk J., Czarnecki J., and Jamrozy K., 2010. Traction properties of the wheel-turfy soil system. Int. Agrophys., 24, 343-350.
Gajda A.M. and Przewłoka B., 2012. Soil biological activity as affected by tillage intensity. Int. Agrophys., 26, 15-23.
Głąb T., 2013. Impact of soil compaction on root development and yield of meadow-grass. Int. Agrophys., 27, 7-13. Fig. 4. Percentage of good quality (█) and poor quality (█) of seedlings for: a - European beech and b - Scots pine assessed according to Schmidt-Vogt classification. a b
Guihua C. and Weil R.R., 2010. Penetration of cover crop roots through compacted soils. Plant Soil, 331, 31-43.
Hamza M.A. and Anderson W.K., 2005. Soil compaction in cropping systems. A review of the nature, causes and possible solutions. Soil Till. Res., 82, 121-145.
Kopeć S. and Głąb T., 2006. The influence of soil compaction on yielding of selected species of grass (in Polish). Scientific papers of the University of Life Sciences, Agriculture, 88(545), 141-146.
Kormanek M. and Banach J., 2011. Tractor devices to controlled exerting pressure on the soil - building and use. In: Mobile energy systems -Hydraulics -Environment -Ergonomics of mobile machines. Peer - reviewed Proceedings. Technical University in Zvolen, Slovakia.
Kormanek M. and Banach J., 2012. Influence of unit pressure exerted on soil on quality of renovation of chosen species of trees (in Polish). Acta Agrophysica, 19(1), 51-63.
Kroulík M., Kumhála F., Húla J., and Honzík I., 2009. The evaluation of agricultural machines field trafficing intensity for different soil tillage technologies. Soil Till. Res., 105, 171-175.
Lipiec J., Hajnos M., and Świeboda R., 2012a. Estimating effects of compaction on pore size distribution of soil aggregates by merkury porosimeter. Geoderma, 179-180, 20-27.
Lipiec J., Horn R., Pietrusiewicz J., and Siczek A., 2012b. Effects of soil compaction on root elongation and anatomy of different cereal plant species. Soil Till. Res., 121, 74-81.
Lipiec J. and Hatano R., 2003. Quantiﬁcation of compaction effects on soil physical properties and crop growth. Geoderma, 16, 107-136.
Lipiec J., Medvedev V.V., Birkas M., Dumitru E., Lyndina T.E., Rousseva S., and Fulajtar E., 2003. Effect of soil compaction on the root growth and crop yield in Central and Eastern Europe. Int. Agrophysics, 17, 61-69.
Onweremadu E.U., Eshett E.T., Ofoh M.C., Nwufo M.I., and Obiefuna J.C., 2008. Seedling performance as affected by bulk density and soil moisture on a Typic Tropaquept. J. Plant Sci., 3(1), 43-51.
Picchio R., Neri F., Petrini E., Verani S., Marchi E., Certini G., 2012. Machinery-induced soil compaction in thinning two pine stands in central Italy. Forest Ecol. Manag., 285, 38-43.
Powałka M., 2008. Changes in topsoil properties due to wheel pressure forces generated by tractor units (in Polish). Inżynieria Rolnicza, 1(99), 339-343.
Rejman J. and Usowicz B., 2002. Evaluation of soil-loss contribution areas on loess soils in southeast Poland. Earth Surface Processes Landforms, 27, 1415-1423.
Sławiński C., Cymerman J., Witkowska-Walczak B., and Lamorski K., 2012. Impact of diverse tillage on soil moisture dynamics. Int. Agrophys., 26, 301-309.
Ulrich R., Neruda J., and Valenta J., 2003. Influence of chosen machine carriage systems on soil. (in Polish). Inżynieria Rolnicza, 11(53), 229-235.
Wesoły W. and Hauke M., 2009. Forest nursery from A to Z (in Polish). State Forests Information Centre, Warsaw, Poland.
Whalley W.R., Watts C.W., Gregory A.S., Mooney S.J., Clark L.J., and Whitmore A.P., 2008. The effect of soil strength on the yield of wheat. Plant Soil, 306, 237-247.
Tan X., Kabzems R., and Chang S., X., 2006. Response of forest vegetation and foliar δ13C and δ15N to soil compaction and forest floor removal in boreal aspen forest. Forest Ecol. Manag., 222, 450-458.
Zhao Y., Krzic M., Bulmer C.E., Schmidt G.M., and Simard S., 2010. Relative bulk density as a measure of compaction and its influence on tree height. Canadian J. Forest Res., 40, 1724-1735.