Download or read book Effect of Four Creeping Bentgrass Cultivars and Quantified Foot Traffic on the Invasion of Annual Bluegrass Into a Putting Green written by Aaron D. Hathaway and published by . This book was released on 2006 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Temperature on Germination of Bentgrass Cultivars and Cultural Practices on Establishment of Creeping Bentgrass written by Devon E Carroll and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Winterkill of turfgrasses on golf course putting greens is highly unpredictable and problematic for superintendents in northern climates, specifically in the Northeastern United States. Harsh winters in the 2013-14 and 2014-15 seasons left many superintendents facing the difficult challenge of trying to recover from turf loss at a time coinciding with the opening of golf courses for play. Creeping bentgrass (Agrostis stolonifera L.; CBG) putting greens are commonly infested with annual bluegrass (Poa annua L.; ABG). Annual bluegrass is known to be an aggressive weed and a species that is difficult to eradicate. Over time, ABG can become the dominant and preferred species to maintain on putting greens. This dominance of ABG in cold climates can become problematic due to the susceptibility of the species to temperature extremes when compared to CBG. In the event of winterkill, superintendents may discover turf loss in sporadic voids or possibly the loss of entire ABG putting greens after snow melt that occurs. If winterkill occurs, re-establishment of the putting surface via CBG seed or sod may be required. Seeding is often the preferred method of recovery, but temperatures in the early spring generally are considered suboptimal for germination. Limited information is available on the influence of suboptimal temperatures on bentgrass germination. The evaluation of CBG cultivar performance (e.g., germination) at low temperatures would be valuable to superintendents seeding in early spring. Additionally, information on effective methods of cultivation, nitrogen (N) fertilization, and seeding rates could optimize establishment of CBG and reduce losses of golf course revenue due to course closure. The objectives of this study were to: 1) determine the impact of suboptimal temperatures on bentgrass cultivar germination; and 2) elucidate the influence of cultivation methods, starter fertilizer rate, and seeding rate on the establishment of CBG. Differences in germination among cultivars were observed when seed was incubated at 10C. Samples of Pure Select, Greentime, Crystal BlueLinks, and Penn A-4 had the highest germination at 10C when incubated in the presence or absence of light. Mackenzie, PLS, Tyee, and Villa exhibited the lowest germination at 10C. Germinability at low temperatures should be considered as a factor in cultivar selection for early spring seeding at suboptimal temperatures.Field experiments indicated that seeding at a rate of 73 kg seed ha-1 and fertilizing at a rate of 73 kg N ha-1 increases seedling vigor and percent ground cover compared to lower seeding and N rates. Slicing was an effective method of cultivation. Putting greens cultivated by slicing alone, slicing + 13-mm hollow tine aeration, and slicing + 6-mm hollow tine aeration generally showed similar seedling vigor and percent cover, indicating that superintendents could use slicing alone to save money and time on hollow tine aeration. These cultivation practices, combined with careful cultivar selection, can optimize early spring seeding and may result in quicker recovery where winterkill occurs.
Download or read book Creeping Bentgrass Management Second Edition written by Peter H. Dernoeden and published by CRC Press. This book was released on 2012-06-04 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Creeping bentgrass is considered the premier turfgrass species grown on golf courses, and there is a growing demand for an understanding of its maintenance and management practices. Still the only comprehensive reference on the subject, Creeping Bentgrass Management, Second Edition helps you identify the factors that contribute to summer bentgrass decline and guides you in selecting the best approaches for stress and pest management. This full-color book delves into all aspects of modern approaches to creeping bentgrass management on golf courses. It describes the nature of mechanical, physiological, and environmental stresses and how they influence growth and management of creeping bentgrass. The book covers the selection of creeping bentgrass cultivars; cultural practices, including mowing, irrigation, and topdressing; the deleterious effects of organic and inorganic layers in golf greens; and ways to limit injury due to mechanical or physical stresses. It also discusses recent advances in the management of selected diseases and soil-related maladies of creeping bentgrass—from Pythium-incited root dysfunction to dollar spot, yellow tuft, and blue-green algae. The focus is on common disease symptoms, predisposing conditions, hosts, and cultural and chemical management strategies. Advances in biological disease control are also reviewed. The book offers practical guidance in selecting and using fungicides, herbicides, and plant growth regulators. It also discusses the use of non-selective herbicides and fumigants for the renovation of creeping bentgrass and outlines strategies for dealing with selected invertebrate pests. Throughout, color photographs help you identify diseases and stresses that may be affecting your own golf course. Fully revised and updated, this second edition of a bestseller features three new chapters, new photographs, and expanded information about diseases. Drawing on the author’s more than thirty years of experience and research, it brings together a wealth of information on how to optimize creeping bentgrass health and performance. What’s New in This Edition Three new chapters, covering the nature of fungicides, abiotic maladies, and selected invertebrate pests An expanded section on disease—double the length of the first edition Updated chapters that reflect the latest developments in creeping bentgrass management More extensive discussion of annual bluegrass problems and their management More than 100 new photos Tips from Dr. Dernoeden Watch these videos to get Dr. Dernoeden’s tips on how to control dollar spot disease and crabgrass and how to identify fairy ring.
Download or read book The Effects of Dazomet on Annual Bluegrass Seed Viability written by Thomas O. Green and published by . This book was released on 2020 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: A major concern regarding creeping bentgrass (Agrostis stolonifera) putting greens is annual bluegrass (Poa annua) invasion. With methyl bromide fumigation now being highly restricted, alternatives must be investigated to curtail weed seed soil infestations. Currently, dazomet is the only fumigant labeled for annual bluegrass control in turfgrass systems. Therefore, research questions related to dazomet efficacy come to the forefront such as how soil texture and depth of seed bank affect efficacy as well as which application rate is most effective within a soil. A study was designed to garner data as to the depth of soil removal needed to reduce annual bluegrass seedling emergence in a newly renovated putting green. Research was conducted in different seasons, summer and fall, respectively; to evaluate seedling emergence across five soil removal depths in four sampling sites. Cores were collected from four golf courses in southeastern Michigan, subdivided into different soil removal depths, potted in sterile soil media, and established in a growth chamber. Results suggest that excavating soil to a depth of 2.54 cm, or more prudently, 3.81-cm depth could minimize annual bluegrass competition in a creeping bentgrass putting green, e.g., annual bluegrass emergence was observed to be greatest in the upper soil depths (1.27 to 3.81cm) in both seasons with minimal emergence (
Download or read book Creeping Bentgrass Management written by Peter H. Dernoeden and published by John Wiley & Sons. This book was released on 2000-07-15 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Creeping Bentgrass Management presents a difficult management problem throughout the summer season. This complex dilemma is related to numerous and often interrelated factors such as: extreme air and soil temperatures, drought or excessively wet soils, dense thatch or organic mats, mechanical and other physical stresses, improper management practices, the misuse of chemicals, and other physical stresses. The goal of this useful manual--complete with helpful color photographs--is to give golf course superintendents practical tools to better understand the many stress factors that contribute to the creeping bentgrass decline complex. It will help you pinpoint problems, and implement cultural and chemical solutions to maintain the integrity of your course.
Download or read book Physiological Effects of Low Mowing Heights Rolling and Foot Traffic on Creeping Bentgrass Putting Greens written by Joseph Ronald Young and published by . This book was released on 2013 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Golf course superintendents are managing creeping bentgrass ( Agrostis stolonifera L.) putting greens throughout the transition zone where temperatures can exceed optimum levels for consecutive days in the summer. The stress of creeping bentgrass associated with these supraoptimal temperatures has been well documented, but the management practices implemented on putting greens to increase green speeds may exacerbate these environmental stresses. To date, the physiological effects of these management practices in combination have not been evaluated for putting green turf. The objective of this dissertation project was to determine the effect of mowing heights, light-weight rolling, and foot traffic on performance and physiological parameters of 'SR 1020' and 'Penn G2' creeping bentgrass. Both above and below ground performance characteristics were evaluated in this project including: wear tolerance, turf quality, turf coverage, turf color, rooting characteristics, ball roll distance, ball mark severity, and ball mark recovery. Physiological data were collected with a custom photosynthesis chamber, and carbohydrate analysis was performed for all mowing and rolling treatments. Individual carbohydrates (total ethanol soluble sugars, glucose, sucrose, fructans, and average degree of polymerization) were determined for foliage, crown, and root material of each sample. Both performance characteristics and physiological parameters reached poorest levels in July or August each year as environmental stresses increased. Plots maintained at higher mowing heights and reduced rolling frequencies maintained better wear tolerance, turf quality, coverage, and color compared to lower mowing heights with frequent rolling. Net photosynthesis increased slightly as mowing heights were increased, but few significant differences were observed for these treatment combinations. Few consistent differences were observed for carbohydrate analysis with lower mowing heights or increased rolling frequencies, but increased mowing height generally resulted in higher carbohydrate concentrations in foliage and crown material following heat stress. Ball mark severity was rarely affected by these treatment combinations, but increased rolling frequencies increased maximum ball mark injury and extended recovery time. Fewer significant differences were observed for these parameters compared to initial expectations, but increased mowing heights and reduced rolling frequencies generally created healthier turf.
Download or read book Management of Mixed Annual Bluegrass and Creeping Bentgrass Stands written by Michael George Hendricks and published by . This book was released on 1988 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Root Distribution of Creeping Bentgrass and Annual Bluegrass on Golf Course Putting Greens written by Eric M. Lyons and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Phosphorus and Nitrogen on Annual Bluegrass Encroachment in a Creeping Bentgrass Putting Green written by Robert Raley and published by . This book was released on 2012 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Brushing on Creeping Bentgrass Putting Green Quality written by Chenchen Gu and published by . This book was released on 2016 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brushing is a daily practice method for golf course turfgrass maintenance which is done to stand the turfgrass plant prior to being cut. Creeping bentgrass (Agrostis stolonifera L.) is the primary turfgrass species used on golf course putting greens in temperate regions, but it has a prostrate growth habit. Brushing promotes vertically oriented leaf tissue, which helps the plant tolerate lower mowing heights. Vertical growth promotes higher shoot density, which helps reduce the competitive ability of some weeds. However, different frequency of brushing could lead to variation in the structure of the turfgrass leaves. The mechanical or abrasive nature of brushing potentially can cause physiological injury to the turfgrass plant. The objectives of this research are to evaluate the variation of the green speed as well as to quantify the fluctuations in physiological benefits or stress and to investigate the morphological changes due to brushing creeping bentgrass putting greens throughout the growing season. The two-year experiment was conducted on a standard `Penncross’ creeping bentgrass putting green on native soil located at the Ohio Turfgrass Foundation Research and Education Facility. For the first three months of the first year, the treatments consisted of two different brushing frequencies, brushing once a week and brushing three times a week with brushing unit set at 2.54 mm, compared to an untreated control. However, there wert no significant differences among those treatments. Therefore we adjusted our treatments to brushing three times a week or brushing five times a week with brushing unit set at 0.00 mm and continued the treatments in the second year of research. We found improvement in turf leaf texture and faster green speed with brushing while the variation of photochemical efficiency was not significant until the maximum temperature got lower than 15°C. In 2014 we observed a thinner leaf blade that appeared to have less leaf moisture in the brushed treatment compared to the untreated control. In 2015 we had four treatment which consisted double cut, double cut with brushing three times a week, double cut with brushing five times a week and untreated control which was single cut. We found increased green speed with all brushing treatments and a significant reduction in the amount of cuticle wax where double cutting had the greatest effect (P=0.05) while no physiological stress was indicated by measuring photochemical efficiency.
Download or read book The Effects of Methiozolin Rates and Nitrogen Fertility Strategies for Annual Bluegrass Control and Creeping Bentgrass Safety on Golf Greens written by Chen Fang and published by . This book was released on 2015 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two experiments were conducted on the Ohio State University Golf Club practice green and one on a USGA green at the Ohio Turfgrass Foundation Research and Education Facility. The first project on the OSU Golf Club putting green was designed to study the interaction of methiozolin, nitrogen rate and fertilizing frequency on creeping bentgrass recovery and annual bluegrass suppression/control in the spring with fall only methiozolin treatments and fall/spring methiozolin treatments. The second project consisted of three methiozolin rates and four rates to determine the best combination of spring methiozolin rate and spring nitrogen application strategies that shows best control over annual bluegrass while benefiting creeping bentgrass recovery and safety. The third project at the OSU Research and Education Facility was to study the effects of five nitrogen rates on the lateral growth/recovery and quality of creeping bentgrass with/without methiozolin treatments.
Download or read book Final Report written by A. A. Avecilla and published by . This book was released on 1996 with total page 34 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 Effects of Different Soil Testing Philosophies on Creeping Bentgrass agrostis Palustris Huds and Annual Bluegrass poa Annua Putting Greens written by Jackie Lyn Guevara and published by . This book was released on 2021 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sufficiency Level of Available Nutrient (SLAN) and Minimum Levels for Sustainable Nutrition (MLSN) are two of the philosophies used for soil test interpretation in turfgrass management. A study was conducted from 2019 - 2020 to compare the effects of SLAN and MLSN nutrient recommendations on a 'Penn A-4' creeping bentgrass green (Agrostis palustris Huds.) and on a mix stand of annual bluegrass (Poa annua) and 'Penncross' creeping bentgrass green grown on United States Golf Association specification rootzone. This study was a split plot with three factors and three replications. The whole plot included three levels: MLSN, SLAN and nitrogen (N) fertilized control treatment. The subplot included two levels: trafficked and non-trafficked. Soil samples were collected in spring and autumn to a depth of 15 cm. Turfgrass color, quality, and NDVI were measured monthly. In 2019, nutrient recommendation rate for MLSN was 73 kg N, 37 kg P and 60 kg K ha-1; SLAN was 73 kg N, 56 kg P and 222 kg K ha-1; and N-fertilized control was 73.2 kg N ha-1. There were no differences among treatments for NDVI, color and quality but the SLAN philosophy had the highest soil P and K levels in autumn of 2019. In 2020, nutrient recommendation rate for MLSN was 73 kg N, 38 kg P and 67 kg K ha-1; SLAN was 73 kg N, 31 kg P and 216 kg K ha-1; and N-fertilized control was 73 kg N ha-1. Both philosophies exhibited higher quality and healthier color compared to N-fertilized control. SLAN philosophy had the highest soil P level but there were no differences in soil K levels between the two philosophies in autumn of 2020.
Download or read book Species Dominance in Mixed Stands of Creeping Bentgrass and Annual Bluegrass written by Roch Edmund Gaussoin and published by . This book was released on 1988 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology and Pathogenicity Factors of Rutstroemia Floccosum and the Effects of Lightweight Rolling on Dollar Spot Disease Incidence in Creeping Bentgrass Putting Greens written by Paul Ryan Giordano and published by . This book was released on 2010 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prediction of Available Water in Creeping Bentgrass and Annual Bluegrass Using Visible and Near Infrared Spectroscopy written by Beau James McSparin and published by . This book was released on 2000 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
