The Effect of Species and Antierosional Land Preparation of Eroded Lands on the Maintenance of Forestry Seedlings

Abstract

In order to establish the influence of species and land preparation mode on the maintenance of saplings planted on superficial erosion degraded lands in the Transylvanian Plain we used sessile oak (Quercus petraea), ash-tree (Fraxinus excelsior) and red dogwood (Cornus sanguinea). The land preparation methods used were terraces and pits. We established the saplings maintenance degree in the first six year after planting. To establish the influence of species and antierosional land preparation on the maintenance of saplings planted and which stroke roots, we placed two experiments, Coasta Mare 1 and 2 (bifactorial). Both experiments were placed so as the data could be statistically processed; showing the variabilities and their causes was done by analyzing the multifactorial variances. The significance of the differences between the tested variants was shown using Duncan (Tuckey) test of multiple comparisons, considerable difference DS_5%. As compared to the sessile oak, the red dogwood and the ash-tree ensured the highest degree of maintenance, no matter the antierosional land preparation method (pits or terraces). Six years after saplings planting (2011), the antierosional land preparation in simple terraces did not provide a saplings maintenance degree superior to pit land preparation. The antierosional land preparation in simple terraces ensured, beginning with the third year after planting, a saplings maintenance degree a little higher than pits land preparation