XI WORLD FORESTRY CONGRESS Antalya, Turkey, 13 to 22 October 1997
	VOLUME 3, TOPIC 12 SUMMARIES OF VOLUNTARY PAPERS IMPROVEMENT OF THE ROOTING OF CUTTINGS OF POPULUS X DELTOIDES CV. HARVARD J. Bustamante1 and R.I. Arreghini1 The aim of this study is to improve the rooting percentage of Populus x deltoides cv. Harvard. The base hypothesis was that rooting defects were due to the dehydration of the cuttings or to them germinating without the appropriate root system having yet developed. One-year old woody cuttings of this cultivar were divided into three groups: the first group did not undergo any treatment while in the second the apical extremity of the cutting was paraffined by immersion in liquid paraffin; in the third group both extremities were paraffined using the same method. The cuttings were then placed in individual containers, half of which contained a substrate to which a hydrogel was added in order to improve their water retention capacity while the other half contained the same substrate without the incorporation of any hydrogel. The results obtained after the data were analysed demonstrate that the application of gel to the substrate increases the number of rooted cuttings. The paraffining treatment, whether at one extremity or both, of the cuttings had no effect on rooting. 1 Agronomists, Instituto Forestal, Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, Almirante Brown 500, (5505) Chacras de Coria, Mendoza, Argentina. T; Facsimile: (54 61) 960469. E-mail: coop-fca@ planet.losandes.com Previous Section Next Section   Download the Pdf file for this topic (332 K) What is a Pdf file ?   Back to Top of the page
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