Effect of fertilizing on the production and health of poplar I-214 (Populus x Euroamericana cv. I-214) in intensive plantations
2000
Kohan, S. (Lesnicky Vyskumny Ustav, Kosice (Slovak Republic). Vyskumna Stanica)
The paper presents results of research on additional fertilizing of the poplar I-214 in intensive plantations on a 25-year series of permanent research plots Leles, which were established at spacings 4x4 m and 5x5 m. Research plots are situated on medium-heavy noninundated alluvia of the Latorica river, in the forest type group Ulmeto-Fraxinetum carpineum. Complex commercial fertilizer NPK with 36 % content of pure mineral nutrients was applied to one part of research plots while the other part was left without treatment. The results demonstrated positive effects of fertilizing on height and diameter growth as well as on volume production of the poplar. Average volume increment increased by 20.4-25.5 % and the health of poplar I-214 was improved as a result of fertilizing under the given site conditions.
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