EVALUATING THE RESPONSE TO NITROGEN SOURCE OF TWO ZOYSIAGRASS CULTIVARS IN SEPARATE FIELD TRIALS
Zoysiagrass (Zoysia spp.Willd.) is known for its low nitrogen (N) fertilization requirement and for its slow establishment rate.Zoysiagrass has been observed to have increased growth under varying sources of N in a greenhouse experiment.The objective of this study was to evaluate the effect of N source and N rate on the percent cover,dark green color index (DGCI),turf density,turf quality,and clipping yield of established ‘Cavalier’ zoysiagrass (Zoysia matrella (L.) Merr) and ‘Meyer’ zoysiagrass (Zoysia japonica Steud.) in separate field trials in 2008 and 2009 in Fayetteville,AR.Calcium nitrate,ammonium nitrate,and urea were used as separate N sources and each was applied monthly at two rates,19.5 and 39.0 kg N ha-1,per month between May and September for a total of 98 or 195 kg N ha-1 yr-1,respectively.Nitrogen source rarely affected turf density and DGCI,and did not affect cover,turf quality,or clipping yield of either Meyer or Cavalier zoysiagrass.Nitrogen rate affected DGCI,density,quality,and clipping yield for both cultivars with the high N rate (195 kg ha-1 yr-1) increasing DGCI for both cultivars,increasing Meyer zoysiagrass turf quality,and increasing clipping yields of both cultivars.Cavalier zoysiagrass clipping yield was increased approximately 20% and Meyer zoysiagrass 32% when N rate was increased from 98 kg ha-1 yr-1 to 195 kg ha-1 yr-1.Based on this research,zoysiagrass managers can achieve similar results with various N source fertilizers.
ammonium nitrate calcium nitrate Cavalier Meyer urea Zoysia japonica Zoysia matrella
Jon M. Trappe Aaron J. Patton
Dept. of Agronomy,Purdue Univ.,West Lafayette,IN 47907 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
575-580
2013-07-14（万方平台首次上网日期，不代表论文的发表时间）