tailieunhanh - Báo cáo lâm nghiệp: "Nursery fertilisation affects the frost-tolerance and plant quality of Eucalyptus globulus Labill. cuttings"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Nursery fertilisation affects the frost-tolerance and plant quality of Eucalyptus globulus Labill. cuttings. | Ann. For. Sci. 64 2007 865-873 INRA EDP Sciences 2007 DOI forest 2007071 Available online at Original article Nursery fertilisation affects the frost-tolerance and plant quality of Eucalyptus globulus Labill. cuttings Manuel FERNÁNDEZa Celia MARC0Sa Raúl TAPlASa Federico Ruizb Gustavo LÓPEZb a Departamento de Ciencias Agroforestales Escuela Politécnica Superior Universidad de Huelva Campus Universitario de la Rábida 21819 Palos de la Frontera Huelva Spain b Grupo Empresarial ENCE . Centro de Investigation y Tecnología. Carretera Madrid-Huelva km 630 Apartado 223 21080 Huelva Spain Received 22 December 2006 accepted 16 July 2007 Abstract - Eucalyptus globulus is widely used in productive exotic plantations but the expansion of these plantations is limited by low temperatures as its cold hardening capacity is limited to C . It is not well understood how nursery fertilisation affects the field performance of plants. This led us to study the effect of three mineral nutrients N P and K on both plant quality and frost tolerance. The experiment comprised eight growth treatments in which a high dose H- or a low dose L- of each nutrient was applied. Nitrogen was the nutrient that determined shoot growth new root growth after transplanting root egress frost tolerance and field performance. Performance was better with treatment H-N than with treatment L-N leaf nitrogen contents being and respectively. The effects of phosphorus and potassium were not significant between treatments for any parameter. The exception was P which when interacting with N favoured root egress for the H-N treatment. It was concluded that nursery fertilisation offers a management tool for eucalyptus growers concerned with plant stock quality. field performance frost tolerance mineral nutrients non-structural carbohydrates root egress Résumé - La fertilisation en pépinière affecte la tolerance au froid et la qualité des plants bouturés d Eucalyptus .