SPATIAL VARIABILITY OF SOIL AMINO SUGAR NITROGEN ON GOLF COURSE FAIRWAYS
Practices that reduce fertilizer inputs without sacrificing turfgrass quality are needed,but current soil tests do not provide a reliable measure of Nitrogen (N) fertility within the turf profile.The Illinois soil N test has been developed to predict crop response to applied N by measuring the amount of soil amino sugar N in the soil.Soil amino sugar N does not fluctuate as rapidly as other forms of N in soil.The objective of this study was to determine the spatial variation of soil amino sugar N in soil in order to determine the number of samples required within a particular area for use of the Illinois soil N test as a management tool on golf course fairways.Soil samples to a depth of 15 cm were collected from two fairways on each of two golf courses in Ohio,USA and analyzed for soil amino sugar N concentration.The data indicated that soil amino sugar N concentrations measured on the four sampled fairways varied,but the spatial correlation present would allow for traditional soil sampling techniques to be used to assess the soil amino sugar N concentration within an area such as a golf course fairway.
geostatistics mineralization
David S. Gardner Brian P. Horgan Brandon J. Horvath
Dept. of Horticulture and Crop Science,The Ohio State University,Columbus,OH 43210 USA Department of Horticultural Science,The University of Minnesota,St. Paul,MN 55108 USA University of Tennessee,Knoxville,TN 37996USA
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
545-549
2013-07-14（万方平台首次上网日期，不代表论文的发表时间）