Naslov
White willow biomass production in a short rotation clonal test in Croatia

Autori
Bogdan, Saša ; Kajba, Davorin ; Katičić, Ida

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Proceedings of 4th International Poplar Symposium. Combining Traditional and Novel Approaches in the Genomic Era / - , 2006

Skup
4th International Poplar Symposium. Combining Traditional and Novel Approaches in the Genomic Era

Mjesto i datum
Nanjing, Kina, 05.06.2006. - 09.06.2006

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
breeding; marginal sites; plantations

Sažetak
A test with 14 white willow clones was established on the locality of Dravica (northeastern part of Croatia, in vicinity of town of Osijek) following the randomized complete block design with four replications. Clonal test was established by cuttings in March 1999, with 1.3 × 0.8 m spacing. The goal was to determine the potential of biomass production of selected clones in short rotations of 2 years, on the site not favorable for growing more valuable species of forest trees. At the age of 2/7 (2 years old shoots and 7 years old stump) diameter at breast height, survival and a number of shoots per stump was measured, and using the combination of the destructive and nondestructive methods, dry biomass of a single two year old shoots was assessed. The production of biomass per hectare was estimated with respect to the clones, mean dry biomass of shoots, survival, spacing, and the average number of shoots per stump. The overall mean dry biomass production of all the investigated clones was 9.3 tons per hectare. The greatest production exhibited clones 'B44', 'V093' and 'V052' (17.5, 13.7 and 12.2 t/ha). Mentioned clones showed specific adaptability to the investigated site and growth conditions through survival, above the average values of the total biomass production, as well as the greatest sprouting ability. A significant increase of dry biomass production of all the researched clones can be observed in regard to the estimate of the age 2/5 (done in 2003.) which amounted to the average of 6.5 t/ha (ranging from 2.4 to 10.2 t/ha). Considering the fact that the test was established on an unfavorable site and no fertilisation or protective measures against weeds or pests were taken, the results show a rather high production. The production of biomass in short rotations could be rather increased by applying more intensive management, and future research will continue with the aim of selecting the most productive clones with the specific adaptation to similar habitats.

Izvorni jezik
Engleski

Znanstvena područja
Šumarstvo

POVEZANOST RADA