Zbornik radova Instituta za šumarstvo number: 26-27 startpage: 75 endpage: 94 All rights reserved https://unilib.phaidrabg.rs/o:7165 RAZVOJ ČETINARSKIH KULTURA OSNOVANIH SADNICAMA PROIZVEDENIM U KONTEJNERIMA SAĐENIM U LETNJEM PERIODU DEVELOPMENT OF CONIFEROUS PLANTATIONS FOUNDED IN SUMMER PERIOD WITH CONTAINERIZED SEEDLINGS Serpentine parent rock, well-marked relief and severely destroyed plant cover, especially forest vegetation, have rendered the lbar-valley one of the most eroded region in Yugoslavia. Afforestation of a greater area of bare-lands, as one of the most complex ways of controling erosion, has started in 1978, by using contrainerized seedlings which were planted in summer period. Development of plantations which were founded in the period 1976-1982. was studied on 17 test-plots. The following data were analyzed: - morphological characteristics of seedling stems, i.e. total heights, root- -collar diameters and dynamics of height increments; - site conditions of each test-plot; - soil preparation before planting; - method and time of planting; - tree species and - type of seedlings and containers. Analysis of these data, made for each year separately, has enalbled the following conclusions; - Preparation of the soil before planting has a strong influence on seedling development in the first years after planting. - In similar site conditions, on well prepared soils, after correctly made planting, plantations which were founded with the seedlings produced in containers of hard plastics have shown the same and even better results than the plantations of the same species, founded with classically produced seedlings. - In the first years after planting seedlings produced in ,,Kopparfors" and ,,Jukosad" containers have shown similar results of heights and diameters - The intensity of height growth in the plantations founded with corntainerized seedlings does not depend on the height at planting time. - The black pine plantatlion, which was founded in the fall of 1978. with containerized seedlings has shown very close results of the studied parameters to those achieved in the plantation of the same species, planted in similar conditions in the summer. - The best results have shown Scots pine plantations wilthout regard to the soil preparation and seedling type. - The intensity of plantation development is directly dependant on the depth of pedological layer, without any direct connection with the type of the soil. - The quantity of the stone on the surface or in the profile is in reverse proportion to the intensity of height and diameter increments of plantations. - On steep slopes over 30⁰, on which soil preparation very often was not done according to the afforestation plans, the growth of the planted seedlings was reduced. - The exposition of the slopes plays an important role on plantation development, those exposed to the south or east being the most unsuitable. Finally it should be underlined that the investigation period was very short and that further investigations should enable more deailed and more certain conclusions. application/pdf 5608945 bytes info:eu-repo/semantics/article Institut za šumarstvo srp Bratić, Vlatko Marković, Danica 1986