tailieunhanh - Báo cáo lâm nghiệp: "Relationship between root growth potential and field performance in Aleppo pine"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Relationship between root growth potential and field performance in Aleppo pine. | Ann. For. Sci. 64 2007 541-548 INRA EDP Sciences 2007 DOI forest 2007031 Available online at Original article Relationship between root growth potential and field performance in Aleppo pine Antonio D. DEL CAMPOa Rafael M. NAVARRO-CERRILLOb Javier HERMOSOc Antonio J. IBANEZa a Departamento de Ingeniería Hidráulica y Medio Ambiente Universidad Politécnica Valencia Camí de Vera s n 46022 Valencia Spain b Departamento Ingeniería Forestal ETSIAM Universidad de Córdoba Avda Menéndez Pidal s n 14080 Córdoba c Conselleria de Territori y Habitatge Generalitat Valenciana c Gregorio Gea 27 Valencia Spain Received 14 September 2006 accepted 20 December 2006 Abstract - Commercial stocks of Aleppo pine in Spain vary in quality but there is no accepted standard for evaluating quality. A RGP test was applied to six commercial seedling stocklots at two dates November February and under two test conditions growth-chamber greenhouse . The RGP s predictive ability was evaluated on two contrasting sites. There was a considerable variation in the RGP depending on application date test conditions and stock factors. The RGP results for November were correlated with each other but they did not explain outplanting performance. The February results in the growth-chamber correlated well with survival at both sites. Regression models explained survival both in the lower R2 97 and in the higher R2 92 quality sites. RGP has a valid predictive ability for this species although it is sensitive to the test conditions. In this sense a shorter and more intensive test performed right before planting may be more reliable. outplanting seedling quality site quality prediction model Résumé - Relation entre potentiel de croissance racinaire et performance du pin d Alep en plantation. Les productions commerciales de plants de pin d Alep en Espagne présentent une importante variabilité de qualité mais aucun test standardisé devaluation de la qualité des plants n a été élaboré. Un