Coppice potential of 16 different species of Eucalyptus after an eight-year rotation

Sbardella Marina, Campoe Otávio, Guillemot Joannès, Le Maire Guerric. 2019. Coppice potential of 16 different species of Eucalyptus after an eight-year rotation. Pesquisa Florestal Brasileira, 39, n.spéc., Résumé : pp. 320-321. IUFRO World Congress 2019 "Forest Research and Cooperation for Sustainable Development". 25, Curitiba, Brésil, 29 September 2019/5 October 2019.

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Abstract : The adoption of coppice is a commonly used management in different regions of Brazil for plantations of Eucalyptus, which requires less investments. However, there are variations in the ability of each genotype to emit sprouts, and higher yields can be obtained by changing the genetic material. The objective of this stndy was to evaluate the coppice potential of 16 Eucalyptus genotypes of different species, (14 clonal and 2 seed origin). The experiment is located in the area of the EUCFLUX-IPEF Cooperative Research Program, in the state of Sao Paulo, Brazil. The following variables were evaluated at 100 days after harvest of an eight-year rotation of the 16 genotypes: number of shoots per stnmp, total height, and basal diameter of the three main shoots. Twelve genetic materials showed one or two shoots per stnmp, and the three clones, with higher development in height and diameter, showed 3 or more shoots per stnmp. The best shoots of the best clones presented total height of approximately 1 m and average base diameter of 8 cm. The genotypes with the highest number of shoots also presented better development in height and basal diameter. The 3 less developed genotypes presented mean basal diameter of less than 3 cm and average height of 40 cm for the three main shoots. The results show the clone/species coppice potential, which is important to move forward with coppicing techniques. Future studies will be conducted to evaluate the productivity physiology of these genetic materials.

Mots-clés Agrovoc : Eucalyptus, Génotype, Accroissement du diamètre, Rotation de coupe

Mots-clés géographiques Agrovoc : Brésil

Classification Agris : K10 - Forestry production
F62 - Plant physiology - Growth and development
F30 - Plant genetics and breeding

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

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