DOI: 10.1016/j.foreco.2015.04.030
Scopus记录号: 2-s2.0-84929191656
论文题名: Response of Eucalyptus grandis in Colombia to mid-rotation fertilization is dependent on site and rate but not frequency of application
作者: Albaugh T.J. ; Rubilar R.A. ; Fox T.R. ; Lee Allen H. ; Urrego J.B. ; Zapata M. ; Stape J.L.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 350 起始页码: 30
结束页码: 39
语种: 英语
英文关键词: Application dose and frequency
; Nitrogen
; Phosphorus
Scopus关键词: Phosphorus
; Absolute response
; After-treatment
; Different treatments
; Eucalyptus grandis
; Frequency effect
; Nitrogen application rates
; Nitrogen dose
; Nitrogen rate
; Nitrogen
; dicotyledon
; dose-response relationship
; fertilizer application
; frequency analysis
; growth response
; nitrogen
; phosphorus
; site effect
; Andes
; Eucalyptus grandis
英文摘要: A nutrient dose and application frequency study was installed in Eucalyptus grandis stands at six sites in the Colombian Andes to examine three hypotheses: (1) individual sites have different treatment responses (there is a significant site effect); (2) the relationship between volume growth response and applied nitrogen is not linear (there is an optimal amount of applied nitrogen beyond which growth improvements would be small); and (3) application frequency does not affect response if the cumulative dose applied is equivalent (there is no frequency effect). Nitrogen, phosphorus and boron were applied at a 1.0:0.1:0.005 ratio, where nitrogen rates ranged from 0 to 250kgha-1 and application frequency was 6, 12, 24 or 36months. Fertilization began when trees were 11-24months old and we examined volume growth response three years after study initiation when the maximum cumulative nitrogen application reached 720kgha-1. There was a significant site effect: two sites were responsive and four were non-responsive to treatment. At the two responsive sites, the relationship between volume growth response and applied nitrogen was not linear. Three years after treatment initiation, the maximum absolute response was 142m3ha-1 (91% increase) and 116m3ha-1 (56% increase) for Sites 1 and 4, respectively. Sites 1 and 4 reached maximum volume response at cumulative nitrogen doses of 360 and 480kgha-1, respectively. Tests that compared different nitrogen application rates and frequencies to achieve the same cumulative dose were not significantly different except for one test at Site 4 where the volume growth response to three applications of 180kgnitrogenha-1 was 58% greater than the response to six applications of 90kgha-1. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65402
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Virginia Tech Department of Forest Resources and Environmental Conservation, 228 Cheatham Hall, Blacksburg, VA, United States; Cooperativa de Productividad Forestal, Facultad de Ciencias Forestales, Universidad de Concepción, Victoria 631, Casilla, Concepción, Chile; ProFor Consulting, Cary, NC, United States; Smurfit Cartón de Colombia, Cali, Colombia; Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, United States
Recommended Citation:
Albaugh T.J.,Rubilar R.A.,Fox T.R.,et al. Response of Eucalyptus grandis in Colombia to mid-rotation fertilization is dependent on site and rate but not frequency of application[J]. Forest Ecology and Management,2015-01-01,350