INFLUENCE OF AN AMINO ACID COMPLEX ON THE GROWTH OF AGROSTIS STOLONIFERA L.CV.PENNCROSS
Biostimulants are products able to stimulate plant growth and metabolism with a response not attributed to mineral nutrition.Biostimulant products have been shown to increase turfgrass tolerance to heat and drought,as well as increase tillering in wheat.The objective of this study was to determine the effects of an amino acid complex on the culture and shoot density of creeping bentgrass in comparison to nitrogen,a commercial sea plant extract,and another amino acid containing biostimulant.Research was conducted at the Iowa State University Horticulture Research Station on ‘Penncross’ creeping bentgrass mown at 1.3 cm and established on a United States Golf Association sand-based rootzone.Clipping yield did not vary among treatments in this experiment.The 2.9 kg N ha-1 rate of the amino acid complex was found to be the most effective treatment to maintain or increase shoot density in the trial.The amino acid complex at 2.9 kg N ha-1 had 15% greater shoot densities than the same rate of N from urea and the 17% greater shoot densities than the commercial sea plant extract over the two dates out of nine that they differed,both occurring during stressful summer conditions.This research demonstrates that applications of an amino acid complex have the potential to increase shoot densities in a mature stand of ‘Penncross’ creeping bentgrass without stimulating shoot growth.
biostimulant fairway golf natural products nutrition
Quincy D. Law Marcus A. Jones Aaron J. Patton Nick E. Christians
Department of Agronomy,Purdue University,West Lafayette,IN 47907USA Department ofHorticulture,Iowa State University,Ames,IA 50010 USA. Department ofHorticulture,Iowa State University,Ames,IA 50010 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
485-489
2013-07-14（万方平台首次上网日期，不代表论文的发表时间）