PHOSPHORUS AND NITROGEN RATE EFFECTS FOR TURFGRASS SOD ESTABLISHED ON A PHOSPHORUS DEFICIENT SOIL
Phosphorus (P) is an essential nutrient for plant growth.Research has shown that when establishing turfgrass from seed,P applications increase top and root growth and increase seedling density.There has been less research on the effect of P applications on turfgrass establishment from sod.The objective was to determine the effect of nitrogen (N) and P applications on Kentucky bluegrass (Poa pratensis L.) sod planted on a high clay,low P sub-soil representative of newly constructed landscapes.Treatments included 98,156,and 208 kg N ha-1 yr-1 and 0,24,and 48 kg P2O5 ha-1 yr-1.The 98 kg N ha-1 yr-1 treatment had the lowest clipping yields,color,and quality ratings throughout the research.For a Kentucky bluegrass lawn where dark green color is not critical and lower clipping yields are desirable,the 98 kg N ha-1 yr-1 rate is recommended.If a dark green color is important for the appearance of the lawn and higher clipping yields are not problematic,the 208 kg N ha-1 rate would be best.Soil P in the sod thatch layer was 58 mg kg-1 and likely resulted in the lack of turfgrass response to P applications.For sod grown on soil that is high in P our research concludes that after transplanting to a low P soil there may not be a response to P applications.
clipping yield fertilizer application Kentucky bluegrass slow-release N turf quality
Sang-Kook Lee Kevin W. Frank James Crum Darryl Warncke
Dept. of Golf,Hoseo University,Asan,Chugnam 336-795 South Korea Dept. Plant,Soil,and MicrobialSciences,E. Lansing,MI 48824 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
207-215
2013-07-14（万方平台首次上网日期，不代表论文的发表时间）