Download or read book Factors Influencing Competition of Annual Bluegrass Poa Annua L Within Established Turfgrass Communities and Seedling Stands written by James Edward Bogart and published by . This book was released on 1972 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Poa Annua written by J. M. Vargas, Jr. and published by John Wiley & Sons. This book was released on 2003-12-19 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Turfgrass Bibliography from 1672 to 1972 written by James B Beard and published by . This book was released on 1977 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Epidemiology and Control of Anthracnose Incited by Colletotrichum Graminicola Ces Wils on Annual Bluegrass written by Tom Karl Danneberger and published by . This book was released on 1983 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Michigan Turfgrass Conference Proceedings written by Michigan Turfgrass Conference and published by . This book was released on 1983 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of The International Turfgrass Research Conference written by and published by . This book was released on 1973 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Second International Turfgrass Research Conference written by Eliot C. Roberts and published by . This book was released on 1974 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Bluegrass Poa Annua L written by and published by . This book was released on 1978 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1979-05 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Bluegrass Poa Annua L and Its Requirements for Growth written by Howard Bennett Sprague and published by . This book was released on 1937 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1993 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Bluegrass Poa Annua L Control with Ethofumesate During Turfgrass Establishment written by David L. Wieneche and published by . This book was released on 1988 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Temperate climates are particularly conducive to growth of annual bluegrass which readily invades and dominates most cool-season turfgrasses. Ethofumesate (2-ethoxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate) is one herbicide available which will selectively control annual bluegrass. The primary objectives of this research were to determine optimum application rates and timing of ethofumesate for control of annual bluegrass on sites renovated by three different techniques. In addition, tolerance of common turfgrass cultivars was determined. Ethofumesate rates of 0.5, 1.0, 1.5 kg ai/ha, and split repeat treatments of 0.5 kg ai/ha applied twice or three times, applied preemergence, or early postemergence at the one and two leaf stage relative to perennial ryegrass were tested. Protected Least Significant Difference mean separation statistical analysis was used to determine differences at the 5% level. Differences were observed between ryegrass and tall fescue cultivars in greenhouse ethofumesate tolerance studies but not in field trials. Ethofumesate greenhouse cultivar tolerance differences did not correlate to results of field trials. All perennial ryegrass and tall fescue cultivars tested in field trials tolerated ethofumesate well at all rates. There was an initial 1 month period of growth suppression following ethofumesate application which perennial ryegrass and tall fescue appeared able to recover and annual bluegrass was not. Annual bluegrass was controlled in all trials at 0.5, 0.5 X 2, 0.5 X 3, 1.0, and 1.5 kg ai/ha ethofumesate rates and at all stages of application. Annual bluegrass reduction ranged between 83% to 100%. Perennial ryegrass cultivars Palmer, Blazer, Loretta, Dasher, and Regal, tall fescue cultivar Mustang, and 'America' Kentucky bluegrass tolerated ethofumesate. Red fescue, hard fescue, chewings fescue, roughstalk bluegrass, colonial bentgrass, and annual bluegrass did not tolerate ethofumesate. In the three establishment methods studied, annual bluegrass control was 100% in the no-till followed by surface scarification and broadcast seeding, 97.3% in the till trials with broadcast seeding, and 83% in the no till slicer seeder method.
Download or read book Annual Bluegrass Poa Annua L Emergence Under Different Residue Management Practices in Perennial Ryegrass and Determination of Resistant and Susceptible Annual Bluegrass Germination Under Controlled Temperature and Moisture written by Matthew D. Schuster and published by . This book was released on 1999 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the loss of field burning the amount of crop residue that remains in perennial ryegrass fields has increased. As the amount of crop residue remaining in the field increases so does annual bluegrass. This has resulted in the increased use of herbicides to control annual bluegrass. However, this increased use has also resulted in herbicide-resistant annual bluegrass. Field experiments were initiated in 1997 to investigate residue management options available to growers and their impacts on annual bluegrass emergence. Two sites, Glaser and Wirth, were established with three residue management treatments replicated four times. The treatments included full-straw, bale/flail, and vacuum sweep. Perennial ryegrass seed yield and annual bluegrass seed contamination were evaluated. The vacuum sweep treatment had lower annual bluegrass emergence than the full-straw or the bale/flail treatments during the 1997-98 growing season, for both sites. The fall of 1998 was much drier than the fall of 1997. Annual bluegrass emergence in all plots was lower in 1998 than in 1997 because of the dry conditions. Fall emergence in 1998 was higher in the vacuum sweep treatment than in the other two treatments, which may have been the result of better soil-seed contact in the vacuum sweep treatment. Lower emergence in the spring at the Wirth site compared to the Glaser site may have been due to narrow crop row spacing and cultivar selection, which shaded the annual bluegrass. When growing seasons were combined, there were no treatment differences. However, more emergence was observed in the spring at the Glaser site compared to the Wirth site. Yield was highest for the vacuum sweep treatment at the Glaser site in the 1998-99 growing season. However, competition from volunteer perennial ryegrass in the full-straw and bale/flail treatments could have accounted for this increase. No other differences in yield and no difference in contamination among treatments were observed. However, contamination at the Glaser site was higher in the 1998-99 growing season than in the 1997-98 growing season. Experiments were conducted in growth chambers to determine how differing environmental conditions affect seed germination of diuron-susceptible and diuron-resistant annual bluegrass. Cumulative germination for the susceptible-biotype decreased from 96% to 88% while the resistant-biotype remained above 95% as temperature decreased from 3 0/20 C to 10/2 C. The susceptible-biotype germinated sooner than the resistant-biotype regardless of temperature. The susceptible-biotype had a higher rate of germination than the resistant-biotype at 30/20 C, but not when the temperature decreased to 10/2 C. Germination response to differing matric potentials did not vary much within a biotype for a given soil type and temperature. Therefore, parameters estimated at -1.03 MPa were chosen to contrast susceptible- and resistant biotypes, and soil types, for each temperature. Maximum cumulative germination was greater than 96% for all treatments. When germination on a given soil type was contrasted, differences were only seen for the susceptible biotype vs. resistant biotype on Dayton soil; and the resistant biotype on Dayton soil vs. resistant biotype on Woodburn soil at both temperatures. The lag in onset of germination was shorter for the susceptible biotype on Dayton soil and resistant biotype on Woodburn soil than the resistant biotype on Dayton soil at 30/20 C. At 18/5 C, the lag in onset of germination was shorter for the susceptible biotype on Dayton soil and resistant biotype on Woodburn soil than the resistant biotype on Dayton soil (P = 0.000 1 and 0.0001, respectively). But the rate of germination was faster for the resistant biotype on Dayton soil than both the susceptible biotype on Dayton soil and resistant biotype on Woodburn soil at 18/5 C (P = 0.02 and 0.0004, respectively). The rate of germination did not differ at 3 0/20 C. When just the soils were contrasted, at 18/5 C all annual bluegrass seeds on the Woodburn soil germinated sooner and the rate of germination was higher than on the Dayton soil. These results indicate that the hydraulic properties of the soils may influence germination. However, this was not observed at 30/20 C. The results suggest that the susceptible-biotype was more sensitive to temperature while the resistant-biotype was more sensitive to moisture. Changing crop management in ways that will reduce annual bluegrass emergence and establishment is needed. By altering management strategies, growers may obtain more efficient and effective use of herbicides, while reducing the selection of herbicide-resistant annual bluegrass.
Download or read book Annual Bluegrass Poa Annua L Control and Turfgrass Response to Amicarbazone written by Daniel Hunter Perry and published by . This book was released on 2011 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Re establishment Techniques Following Winterkill written by Erica Nicole Bogle and published by . This book was released on 2009 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Insights Into the Microbial Community of Annual Bluegrass poa Annua L Putting Green Turf written by Lisa A. Beirn and published by . This book was released on 2016 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annual bluegrass (Poa annua; ABG) putting green turf is a unique man-made environment that requires regular fertility inputs to maintain acceptable turfgrass quality and playability. While these inputs can affect foliar diseases such as anthracnose, caused by Colletotrichum cereale, little is known about their impact on microbial communities in this ecosystem. The objectives of this dissertation were to: 1) determine the frequency and distribution of C. cereale in the United States, 2) examine the resident microbial communities in the soil of ABG putting green turf over time using advanced molecular technologies, and 3) identify how nitrogen (N) and/or potassium (K) fertilization affects the distribution, diversity, and abundance of benign and pathogenic microorganisms in this system. More than 50 phyla, representing hundreds of species of archaea, bacteria, and fungi were identified. Above ground, this diversity was highlighted in the form of two distinct lineages of C. cereale, both able to cause anthracnose disease but exhibiting distinct host and geographic preferences. Below ground, the ABG rhizosphere supported a vast microbial community, despite high sand content and regular fertilization and pesticide applications. Few turfgrass pathogens were identified from the soil. However, tremendous variation was characterized within the nonpathogenic microbial community, with the rhizosphere of ABG hosting organisms capable of antibiotic production, fixing nitrogen, or serving as potential biocontrol agents or mycorrhizal partners. Over all, individual microbial groups were present in low abundance across all samples. Fertilization did not affect microbial diversity, but did alter the abundance of specific microbial groups. Changes associated with fertility treatments were limited to approximately 7% of the total archaea/bacteria and 23% of the total fungal community identified. In general, K and low rates of N increased abundance of archaea, bacteria, and fungi in the study sites. Seasonality also strongly influenced microbial communities, with samples collected in summer months clustering separately from those obtained in the spring. The research described here provides the first insight into the diverse microbial community residing in the soil of ABG putting green turf utilizing next-generation sequence-based analyses, and protocols developed to conduct this work should help facilitate future research examining the turfgrass microbiome.
Download or read book Turfgrass written by Donald V. Waddington and published by . This book was released on 1992 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Section I. the turfgrass industry: Turfgrass science-Historical overview, the turfgrass industry, Artificial turf; Section II. turfgrass physiology, Ecological aspects of turf communities, Energy relations and carbohydrate partitioning in turfgrasses, Salinity and turfgrass culture, Physiological effects of temperature stress, Shade and turfgrass culture, Effects of traffic on turfgrass; Selection III. soils and water: Soils, soil mixtures, and soil amendments, Nutricional requirements and fertilization, Water requirements and irrigation; Section IV. management: Energy conservation and efficient turfgrass maintenance; Integrated pest management, Turfgrass management operations, Plant growth regulators and turfgrass management; Section V. research methods:Field research, Controlled environment research methods for turs, Research methods and approaches to the study of diseases in turfgrasses,Methods of research in turfgrass entomology, Turfgrass weed science research methods, Breeding improved turfgrasses.
