Acta Botanica Croatica, Vol. 65 No. 2, 2006.
Izvorni znanstveni članak
Influence of weeds on the growth of a Pinus pinea L. during reforestation in Palencia (Spain)
B. Herrero
J. Gutierrez
Sažetak
Astudy was carried out on the influence of spontaneous vegetation on the growth of reforested Pinus pinea L. (stone pine) seedlings in abandoned cropland. Ninety seedlings were randomly selected. In half of them weeds were removed and the remaining 45 were not treated. The research lasted from November 1998 to October 1999. The studied area was located 7 km from Palencia city (Northern Spain). The pine trees were planted in ridges. Weed mean cover around the untreated seedlings was 12.38%. Greatest height growth in pine seedling occurred in April. Significant differences were observed between different treatments.Weeds reduce the height of the pine trees, although the effect was not very remarkable. There was a significant negative relation between tree diameter and weed. The
average growth of the pine trees regarding height was 24.44% and 50.14% regarding diameter. In general, there was more growth in the diameter than in height, because the reforested species consume more energy-producing underground or supporting biomass in
dry areas.
Ključne riječi
Reforestation; Pinus pinea; seedlings; growth; weed; competition, Spain
Hrčak ID:
4785
URI
Datum izdavanja:
20.10.2006.
Posjeta: 2.229 *