SOIL CHEMICAL PROPERTIES OF GOLF GREENS AFFECTED BY AGE, INITIAL CONSTRUCTION AND ESTABLISHMENT
Soil chemical properties of sand-based root zones of putting greens are subjected to temporal and spatial changes.This study was conducted to investigate total organic C and selected chemical properties as influenced by sampling depth,putting green age,root zone mixture and the fertilization program during the establishment period.Four USGA-style putting greens were constructed in sequential years from 1997 to 2000.Soil samples were collected when the greens were 6,7,8 and 9 yr old,and were partitioned to 12 equal layers before analysis.The root zone mixtures and fertilization regimes during the establishment had no effect on soil properties saving electrical conductivity (EC),which was higher in sand/peat/soil root zones.Total organic C,total N,cation exchange capacity (CEC),EC,and potentially mineralizable N (PMN) decreased whereas soil pH increased with soil depth.Aging affected soil chemical properties at different layers.However,as the green aging,total root zone depth increased due to topdressing practice.The current difference in chemical properties at upper layers may be affected by previous surface properties as well as the changes of hydraulics due to the changes in root zone depth.The total depth of a root zone confounds with the aging effect which is yet to be investigated.
layering organic matter root zone depth topdressing
Yichun Wang Wenjuan Fang Deying Li Roch Gaussoin
Department of Plant Sciences,North Dakota State University,Fargo,ND 58108 USA Institute of Turfgrass Science,BeijingForestry University,Beijing 100083 China Department of Agronomy and HorticultuNebraska-Lincoln,University ofLincoln,NE 68583,USA
国际会议
The 12th International Turfgrass Research Conference(第十二届国际草坪学术大会)
北京
英文
539-544
2013-07-14（万方平台首次上网日期，不代表论文的发表时间）