RESEARCHE CONCERNING INTRODUCTION IN CULTURE OF THE POPLARS AND WILLOWS SPECIES / CLONES WITH SUPERIOR FOREST PRODUCTIVE POTENTIAL AND INCREASED RESISTANCE TO ADVERSITIES

• Published in: Analele ICAS Vol. 1; pp. 83 - 99
• Main Author: Chira D. , Filat M
• Format: Journal Article
• Language: Romanian
• Published: 2004
• Subjects: CIENCIAS FORESTALES; FORESTERIE; FORESTRY; http://www.fao.org/aos/agrovoc#c_3055
• ISSN: 1583-2023

Researches have been carried out during 2000 - 2004, in order to evaluate the forest productive capacity and resistance of the Romanian and international poplar and willow species / clones. In the same time, the physical and mechanical properties of the prospective clones have been determined. In the NufÄ_ru nursery (Tulcea Forest District) a collection of 89 poplar and 34 willow clones have been installed. The species / clones with high rate of growing and good resistance to leaf diseases have been monitored in comparative trials settled in the Danube Valley. Populus x interamericana 'RAP' have got a very good propagation by shoot cuttings and also it have possessed a good increment and resistance to adversities in nurseries and plantations. 'RAP' increment was significant larger compared with 'Ro 16' (reference for the Romanian forestry), but insignificant compared to 'I 214' (international reference). The 24 years old 'RAP' of the Turcoaia trial is in top, but this poplar belongs to the semihardness wood trees, while other clones belongs to mild or very mild wood trees. The results of the researches could be implemented in all the forest districts from the Danube Valley, both in zonal centers of mother plants and forest plantations. Keywords: comparative trials, increment, resistance to Melampsora spp., physical and mechanical properties, Danube Valley.