DOI: 10.1016/j.foreco.2016.12.019
Scopus记录号: 2-s2.0-85007602659
论文题名: Vitality fertilization balanced tree nutrition and mitigated severity of Sirococcus shoot blight on mature Norway spruce
作者: Halmschlager E. ; Katzensteiner K.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 389 起始页码: 96
结束页码: 104
语种: 英语
英文关键词: Disease tolerance
; Imbalanced tree nutrition
; Picea abies
; Shoot blight
; Sirococcus conigenus
; Vitality fertilization
Scopus关键词: Calcium
; Disease control
; Fertilizers
; Gypsum
; Magnesium
; Needles
; Nutrients
; Nutrition
; Plants (botany)
; Picea abies
; Shoot blight
; Sirococcus conigenus
; Tree nutrition
; Vitality fertilization
; Forestry
; Picea abies
; Sirococcus
; Sirococcus conigenus
英文摘要: The effects of vitality fertilization on needle nutrient status and symptom development of Sirococcus shoot blight (SSB) were examined in a long-term, single-tree fertilization experiment in a 90-yr old Norway spruce stand on acidic soil. Trees showing severe symptoms of SSB (“symptomatic trees”, N = 72) and trees with less than 5% of the current-year shoots symptomatic of SBB (“asymptomatic trees”, N = 72) were selected among the dominant and co-dominant trees within the stand and randomly assigned to three fertilization treatments: unfertilized control, dolomitic liming and gypsum & kieserite fertilization. Concentrations of macronutrients were determined in healthy current year needles of symptomatic and asymptomatic trees 3 and 6 years after fertilization and compared with the status in autumn prior to fertilizer treatment. Severity of SSB was rated yearly from 2001 to 2006 by estimating the percentage of affected current-year shoots in the crown in order to assess evolution of disease severity due to changes of nutritional status of the host. Both fertilizer treatments significantly increased foliar Ca and Mg concentrations, and as a result the primary differences in nutrient status between symptomatic and asymptomatic trees disappeared. Thus, vitality fertilization mitigated insufficient Ca and Mg supply that characterized symptomatic trees prior to fertilization, and balanced tree nutrition. Application of the water soluble Ca- and Mg-fertilizer (gypsum & kieserite-variant) induced a quick but only short-term fertilization effect whereas dolomitic liming resulted in significantly higher Ca and Mg concentrations compared to control 3 as well as 6 years after fertilization. In contrast, Ca- and Mg-deficiencies further intensified in the unfertilized trees. Balanced tree nutrition also mitigated disease severity of the fertilized trees and promoted tree recovery, indicating that the elements Ca and Mg are putatively involved in disease tolerance. Best results were achieved by fertilization with a water soluble Ca- and Mg-fertilizer which resulted in an 18.9% reduction of disease severity, assessed by the number of diseased shoots per tree, within five years. While dolomitic liming also promoted tree recovery (reduction in disease severity was 11.8%), in the unfertilized control variant a 3.5% increase was observed in the same period. Reduction in disease severity differed significantly from the control for both fertilizer treatments whereas differences between fertilizer treatments were not significant. Results of this study revealed that balanced nutritional status of mature Norway spruce due to vitality fertilization was associated to reduced symptom development of Sirococcus shoot blight. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64481
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences, Peter Jordan-Straße 82, A 1190 Vienna, Vienna, Austria; Institute of Forest Entomology, Forest Pathology and Forest Protection, Peter Jordan-Straße 82, A 1190 Vienna, Austria; Institute of Forest Ecology, Peter Jordan-Straße 82, A 1190 Vienna, Austria
Recommended Citation:
Halmschlager E.,Katzensteiner K.. Vitality fertilization balanced tree nutrition and mitigated severity of Sirococcus shoot blight on mature Norway spruce[J]. Forest Ecology and Management,2017-01-01,389