Abstract
Growth and timber production of 28 poplar clones were evaluated. A set of clones was derived from<br />14 clones newly bred in Forestry and Game Management Research Institute in the Czech Republic, eight well-known cultivars of Populus &times; euroamericana planted in Europe and imported to the Czech Republic, two standard cultivars 'I-214' and 'Robusta' (Populus &times; euroamericana). Four clones of Populus deltoides were added to the test set. Tree spacing was 4 &times; 4 m. Stem diameter, tree height and stem volume production were evaluated in 6-years-old trees. Based on the results, it was concluded that the yield of four clones was higher than that of standard cultivar 'I-214'. Standing volume of two P. deltoides clones and one new Czech P. &times; euroamericana clone varied in the range of 77&ndash;121 m<sup>3</sup>&middot;ha&ndash;<sup>1</sup>.
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