Pure and mixed plantations of Persian walnut (Juglans regia L.) for high quality timber production in Chile, South America

作     者：Verónica Loewe-Muñoz Mónica Balzarini Marta Ortega González Verónica Loewe-Mu?oz;Mónica Balzarini;Marta Ortega González

作者机构：Chilean Forest Institute(INFOR)Metropolitan OfficeSucre 2397ÑuñoaSantiagoChile CONICET Biometry UnitCollege of AgricultureUniversidad Nacional de CórdobaCiudad UniversitariaCC509CP 5000CórdobaArgentina Chilean Forest Institute(INFOR)Biobío OfficeCamino a Coronel Km 7.5San Pedro de la PazConcepciónChile 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2020年第13卷第1期

页      面：12-19页

核心收录：

学科分类：09[农学] 0902[农学-园艺学] 090201[农学-果树学] 

基　　金：supported by the Chilean Ministry of Agriculture and trial establishment and management were supported by the Foundation for the Agriculture Innovation(FIA) Ministry of Agriculture,Chile,project“Mixed plantations:productivity,diversity and sustainability for the forest development”[C00-1-F-028] 

主　　题：noble wood monoculture forest associations companion species Russian olive 

摘      要：Aims Persian walnut(Juglans regia L.),an interesting forest species for the veneering industry,requires adequate management to produce valuable high-quality *** species associations and management level can improve stand productivity,the novelty of this work was to assess Persian walnut performance in different planting mixtures and in pure plantations conditioned to management *** Growth,straightness and survival measurements were taken annually for 7 years after planting pure and mixed plantations under two contrasting management *** were recorded at Age 7 in all *** each management intensity,besides the monoculture,three mixtures were tested:a mixture of only main forest species,main forest species plus one arboreal companion species,Black alder(Alnus glutinosa L.)and main species plus the shrub Russian olive(Elaeagnus angustifolia L.)as nurse species.A test of interaction between plantation type and management scenario was conducted using repeated growth *** Findings The interaction was significant,indicating the presence of different mechanisms underlying plantation effects under high and low management *** with pure plantations,Persian walnut associated with the nurse shrub exhibited 78%higher height and 53%higher diameter growth in plantations under low *** benefits(lower presence of walnut blight than in the monoculture)and better straightness were also found in the association including the shrub when the management intensity was not *** beneficial effects in the presence of Russian olive were not present under high management intensity(irrigation,fertilization,tutoring and frequent pruning).Site-specific designs for Persian walnut plantations would depend on the foreseen management intensity.