o:7225 FENOLOŠKA OSMATRANJA I VISINSKI RAST DVOGODIŠNJIH SADNICA DUGLAZIJE RAZLIČITIH PROVENIJENCIJA PHENOLOGICAL OBSERVATIONS AND HEIGHT GROWTH OF 2-YEAR OLD DOUGLAS - FIR SEEDLINGS OF DIFFERENT PROVENANCES sr The seeds of 32 provenances of Douglas-fir [Pseudotsuga menziesii (M i r b.) Franco] were sown in a comparative test, laid out in Forestry Faculty's Arboretum in Beograd. The objective of the experiment was to select, on the basis of plant growth and development, the best suited provenances for corresponding sites in S. R. of Serbia. The seed sources in the experiment have included the area between 32,9 to 49° of northern geographic latitude and between 105,7 to 124° of geographic longitude, on different sea levels, ranging from 150 to 2.682 m. Phenological observations of young seedlings, including their behaviour on low temperatures, have shown big differences. So the early fall frosts have caused great damages on the provenances originating from small latitudes and lower sea levels, but the late spring frosts have damaged the provenances from higher sea levels and northward latitudes. The mean heights of 2-year old plants lined up in a rather large diapason from 9,16 to 38,86 cm, the smallest plants belonging mainly ,to the provenances from the highest sea levels. The observations and the measurements, which have started in the nursery, should be continued in field tests on several localities. 2025-03-10T10:57:11.698Z 44 yes 46 Dragan Vuletić 46 Milutin Jovanović application/pdf 3509945 https://unilib.phaidrabg.rs/o:7225 no yes 1 70 92000001 1983 71A07 Zbornik radova Instituta za šumarstvo 20-21 23 29 Institut za šumarstvo 1983