DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 1-2/1976 str. 36 <-- 36 --> PDF |
2. Uz jednake klimatske i edefaske uvjete, te pri- istom uzgojnom tretmanu P. x E. cv. regenerata postigla je gotovo identične rezultate kao i standardni kultivar P. x E. cv. robusta, nešto slabije rezultate P. x E. cv. marilandica, dok je P. x E. klon 1-214 postigao najveći debljinski, visinski i volumni prirast. 3. Praćenjem rezultata, koje će postići zasađeni kultivari i klon 1-214 u narednom periodu omogućiti će pravilniju ocjenu opravdanosti uzgoja topola na ovakovim staništima. LITERATURA 1. Alber t J.: Bjelogorične šume Požeške kotline, Traženja br. 3 Slav. Požega 1970. 2. Dekani ć I,: »Dubina podzemne vode i tlo kao važni edafski činioci uspijevanja neki evroameričkih topola na aluviju Save i Kupe kod Siska«, Šum. list br. 11—12, Zagreb 1969. god. 3. Hanz l D.: »Šume i šumarstvo na području komune Slavonska Požega«. Požeški zbornik br. III 1970. 4. Kalini ć M.: »Tla sekcija Slav. Požega 1, Slav. Požega 2, Slav. Brod 1 sa pedološkom kartom 1 : 50.000« Zagreb 1966. 5. Kalini ć M. »Tla sekcije Slav. Požega 2 sa pedološkom kartom 1 : 50.000« Zagreb 1972. 6. Kori ć M.: »Osnovi poljskih ogleda«, Sarajevo 1952. 7. Kovači ć D.: »Utjecaj različitih promjera sadnica topola klona 1-214 i obrade tla na startno uspijevanje u plantažnom uzgoju«. — Magistarski rad, Zagreb 1973. 8. Skori ć, Filipovski, Ćirić: »Klasifikacija tala Jugoslavije« (1973) 9. Živano v N.: »Prilog izučavanja prirasta klona 1-214 na zemljištima različitih vodnofizičkih svojstava« —Magistarski rad, Novi Sad 1970 god. Summary THRIVING OF EUROPEAN-AMERICAN POPLARS IN THE POŽEGA VALLEY The thriving of Populus euramericana cv. robusta, -cv. regenerata, -cv. marilandica and -cl. 1-214 near the village of Trapari in the Požega Valley was examined during the first ten years (1960-1969) after the establishment of an experimental area. Temperature conditions of the investigated region are in general favourable. More than half of annual rainfall occurs during the growing period. However, in some years the amount of rainfall in the growing period varies noticeably. The results of soil analysis suggest that the soil of the experimental plot belongs to the pseudogley type. It is well known that such soils do not possess a greater faculty of accumulating moisture, so that we have the impression that in particular years, when in the growing season smaller amounts of rainfall occur, or, when the rainfall is irregulary distributed, Poplars suffer from lack of moisture. We correlate to this the stagnation of diameter, height and volume increments in 1967 and 1968. In relation to the standard clone (P. xE. cv. robusta) — under the same silvical management — P. xE. cv. regenerata yielded a by 0´37% lower result, -cv. marilandica also by 11.11% a lower one, while -cl. 1-214 produced a by 31.24% larger volume per hectare. A follow-up of the results, which will be achieved by the planted cultivars and clone 1-214 in the next period should make possible a more correct estimate of the justification of Poplar growing on such sites. 34 |