Cultivation of speckled alder under harsh mountain conditions
I. Kuneš, M. Baláš, T. Koňasová, D. Zahradník, V. Balcar, O. Špulák, D. Kacálek, M. Jakl, J. Jaklová Dytrtováhttps://doi.org/10.17221/92/2011-JFSCitation:Kuneš I., Baláš M., Koňasová T., Zahradník D., Balcar V., Špulák O., Kacálek D., Jakl M., Jaklová Dytrtová J. (2012): Cultivation of speckled alder under harsh mountain conditions. J. For. Sci., 58: 234-244.
The aims of the paper were as follows: (1) to assess the applicability of speckled alder for pioneer stands on the mountainous clear-cut tracts and (2) to evaluate the effects of slow-release fertilizer on the survival and growth of speckled alder under harsh environmental conditions. On the basis of seven-year results we can presume that speckled alder is a convenient pioneer species that can be cultivated on harsh mountain sites where the climatic extremes need to be alleviated and a layer of surface humus renewed. The initial slow-release fertilization is, nonetheless, highly desirable. As contrasted to the control the surface and planting hole applications of amendment reduced the total seven-year mortality rate by 9.5% and 20.1%, respectively, and the periodic annual height increment (2003–2009) was promoted by 47% and 59%, respectively. Analogous results were obtained when the values of basal stem diameter and crown diameter were compared. As for the method of application, the placement of the slow-release amendment in the planting holes seems to be more efficient mainly in terms of survival promoting. The surface application is, nonetheless, less laborious and also yielded satisfactory results.
Alnus incana; grey alder; site amelioration; slow-acting amendments; biological amelioration