The effect of crop rotation of six forest tree species on peat-bark substrate enzymic activity
2003
Lukaszewicz, J. (Forest Research Institute, Warsaw (Poland). Dept. of Silviculture) | Olszowska, G. (Forest Research Institute, Warsaw (Poland). Dept. of Forest Management in Industrial Regions)
The study was conducted in the forest nursery in the years 1989-97. Seedlings of Scots pine Pinus silvestris, Norway spruce Picea abies, European larch Larix decidua, pendiculate oak Quercus robur, common beech Fagus silvatica and silver birch Betula overrucosa were grown on peat-bark substrate. The activity of soil enzymes: betaglucosidase, invertase, urease, asparaginase, acid phosphatase and dehydrogenases was assessed. The successsion of three year crop rotation cycles with species following each other according to the rotation plan was subject to observation. The obtained results have confirmed recent suppositions that the tree species and their rotation modify soil enzymatic activity
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