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| Author | : New Jersey Agricultural Experiment Station |
| Publisher | : |
| Total Pages | : |
| Release | : 1937 |
| Genre | : |
| ISBN | : |
| Author | : Howard Bennett Sprague |
| Publisher | : |
| Total Pages | : 32 |
| Release | : 1937 |
| Genre | : Bluegrasses |
| ISBN | : |
| Author | : J. M. Vargas, Jr. |
| Publisher | : John Wiley & Sons |
| Total Pages | : 186 |
| Release | : 2003-12-19 |
| Genre | : Architecture |
| ISBN | : 0471472689 |
Annual bluegrass is the most widespread turfgrass species maintained on intensively cultured turf. Indeed, most of the top golf courses in the world have greens composed, at least in part, of this type of turfgrass There have historically been conflicting beliefs as to why many golf courses have problems with annual bluegrass populations during the summertime months. Through analysing the industry's latest research and pest control technologies the author helps put to rest this debate and offers methods for growing and maintaining healthy annual bluegrass. Written by leading experts in their field, this book contains many colour photographs and is a practical guide for golf course and turgrass specialists.
| Author | : John B. Haguewood |
| Publisher | : |
| Total Pages | : 101 |
| Release | : 2014 |
| Genre | : |
| ISBN | : |
Annual bluegrass (Poa annua L.) is a problematic weed species found in many turfgrass stands, particularly golf course putting greens. This weed is light green in color, has poor heat and drought tolerance, and produces many seeds making it undesirable on putting greens. The objectives of this research were to: a) investigate the use of the herbicide bispyribac-sodium alone or in combination with plant growth regulators for annual bluegrass control and putting green tolerance; b) determine the efficacy of plant growth regulators on annual bluegrass seedhead suppression when applied once, or followed by a sequential application; and c) determine how chemicals applied at different growth stages of annual bluegrass effect shoot growth and seedhead development. Field and greenhouse research was conducted during 2010, 2011, 2012 and 2013 at multiple golf courses throughout central Missouri. Treatments of bispyribacsodium alone or in combination with paclobutrazol demonstrated safety to putting greens with high levels of annual bluegrass control (90%). For seedhead suppression, treatments containing ethephon were most effective, resulting in up to 95% suppression of seedheads. Regardless of plant stage during application, annual bluegrass biomass was reduced 19 and 31% following applications of ethephon + trinexapac-ethyl or paclobutrazol, respectively.
| Author | : |
| Publisher | : |
| Total Pages | : 40 |
| Release | : 1978 |
| Genre | : Agriculture |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 6 |
| Release | : 1980 |
| Genre | : |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 31 |
| Release | : 1978 |
| Genre | : Bluegrasses |
| ISBN | : |
Extensive investigations of annual bluegrass were conducted at Michigan State University by the four authors from 1965 into the early 1970's. A major portion of the investigations concerning the description, adaptation, and cultural practices affecting annual bluegrass growth and development were supported by a series of grants from the United States Golf Association Green Section Research and Education Fund, Inc. Much of the information derived from these studies served as the data from which this bulletin has been prepared. Annual bluegrass is a native of Europe and is believed to have originated from a cross between Poa infirma H. B. K., an annual species, and Poa supina Schrad., a creeping perennial
| Author | : James Edward Bogart |
| Publisher | : |
| Total Pages | : 192 |
| Release | : 1972 |
| Genre | : Bluegrasses |
| ISBN | : |
| Author | : William M. Dest |
| Publisher | : |
| Total Pages | : 132 |
| Release | : 1974 |
| Genre | : Bluegrasses |
| ISBN | : |
| Author | : Matthew T. Faletti |
| Publisher | : |
| Total Pages | : 138 |
| Release | : 2004 |
| Genre | : Annual bluegrass |
| ISBN | : |
Abstract: Field experiments were conducted in 2002 and 2003 in the Willamette Valley of Oregon to investigate the effects of two plant growth regulators on the growth and reproduction of the weed annual bluegrass. Previous research suggested that the plant growth regulator prohexadione-calcium hastened senescence of annual bluegrass. Another plant growth regulator, trinexepac-ethyl has been used for suppression of annual bluegrass seedheads in turf. Plant growth regulators were applied in either split or single applications in March, April or May at five field sites over two years. Annual bluegrass biomass, seed yield, thousand seed weight, seed germination, and panicles per plant were measured as well as crop yield. No treatment provided satisfactory annual blugrass control when applied in either single or split applications at rates within the range suggested by the manufacturers for increased crop yield. Controlled environment trials also were conducted to evaluate the growth regulating properties of trinexepac-ethyl on annual bluegrass plants. Results of dose response experiments were similar to those of field trials. Annual bluegrass biomass was not consistently decreased with increasing rates of trinexepac-ethyl. Treated plants had fewer spikelets per panicle and fertile florets per spikelet compared to untreated controls. Although spikelets per panicle and fertile florets per spikelet were reduced, increased seed production may be obtained due to increased numbers of panicles per plant.
