Progress 10/01/12 to 09/30/17
Outputs
Target Audience:The targeted audience was focused on turfgrass industry professionals specifically golf course superintendents and athletic field managers who are interersted in reducing their fungicide inputs. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?We have been able to demonstrate that the practice of brushing greens on a more regular basis can help reduce the potential for disease development by providing a more healthy putting green under intensive management. How have the results been disseminated to communities of interest?The results from thisyear's data were presented at the Ohio State University Turf Field Day in August (approximately 300 attendees) What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
We found fthis past year that brushing, a practice where you literally brush the putting green to make the turf more upright in growth habit reduced the amount of dew accumulation. Prior to morning mowing, plots that were brushed had the least amount of dew formation. In addition the leaf tissue removed from brushed plants had lower moisture content. Following dew removal (not yet mowed), plots that were previously brushed appeared healthier and did not show any signs of stress from an aggressive brushing. Brushing appears to be a practice that could be instituted into regular putting green management and could provide a healthier and potentially more disease tolerant turf.
Publications
|
Progress 10/01/15 to 09/30/16
Outputs
Target Audience: Golf course superintendents, turf managers and athletic field managers are the target audience for this project. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?The implication of the studies was reported in class lectures at The Ohio State University (HCS 3475, and HCS 4570). The results were reported at conferences in Ohio. How have the results been disseminated to communities of interest?The results from this year's data were presented at the Ohio State University Turf Field Day in August (approximately 300 attendees). What do you plan to do during the next reporting period to accomplish the goals?Quantify more clearly the benefits of brushing on reducing dew formation and the impact it has on the turfgrass plant in relation to disease development. We propose to set up various levels of brushing treatments and quantify the effects of those treatments through the amount of dollar spot present.
Impacts
What was accomplished under these goals?
We found for the third year that brushing, a practice where you literally brush the putting green to make the turf more upright in growth habit reduced the amount of dew accumulation. Prior to morning mowing, plots that were brushed had the least amount of dew formation. In addition the leaf tissue removed from brushed plants had lower moisture content. Following dew removal (not yet mowed), plots that were previously brushed appeared healthier and did not show any signs of stress from an aggressive brushing. Brushing appears to be a practice that could be instituted into regular putting green management and could provide a healthier and potentially more disease tolerant turf.
Publications
|
Progress 10/01/14 to 09/30/15
Outputs
Target Audience:The golf course pest control market is in excess of 300 million dollars annually with fungicide purchases accounting for 58 percent of the total. An important aspect of turf disease development is the duration of the leaf wetness period. For most of thewidespread diseases found on golf courses, the longer the wetting period the greater the disease severity. Reducing the wetting period through cultural or management practices may help reduce the need for chemical control. Dew is moisture that appears overnight on the turf leaf. It is comprised of condensation of water and in turf, guttation water - internal plant fluid that is exuded from the leaf. The duration of the dew period on turf influences disease occurrence and presence. In addition, the guttation component of dew is high in plant organic materials that serve as a food source for pathogens. Dew is routinely removed on high quality turf like creeping bentgrass putting greens on a daily basis from mowing. After early morning mowing dew reforms that is proportionally higher in guttation. An understanding of the impact of dew duration and composition influencing disease development and practices to reduce the dew period would help reduce fungicide use. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?The implication of the studies was reported in class lectures at The Ohio State University (HCS 3475, and HCS 4570). The results were reported at conferences in Egypt and in Idaho. How have the results been disseminated to communities of interest?The results from this year's data has been presented at the Ohio State University Turf Field Day in August (approximately 300attendees), and at the Turf Science Live meeting in San Antonio, Texas to over 50 golf course professionals. What do you plan to do during the next reporting period to accomplish the goals?Quantify more clearly the benefits of brushing on reducing dew formation and the impact it has on the turfgrass plant in relation to disease development. We propose to set up various levels of brushing treatments and quantify the effects through the amount of dollar spot that occurs.
Impacts
What was accomplished under these goals?
We found for the second year that brushing, a practice where you literally brush the putting green to make the turf more upright in growth habit reduced the amount of dew accumulation. Prior to morning mowing, plots that were brushed had the least amount of dew formation. In addition the brushed plants the leaf tissue removed had lower moisture content. Following dew removal (not yet mowed), plots that were previously brushed appear healthier and do not show any signs of stress from an aggressive brushing. Brushing appears to be a practice that could be instuted into regular putting green management that could provide a healthier and potentially more disease tolerant turf.
Publications
|
Progress 10/01/13 to 09/30/14
Outputs
Target Audience: Golf course superintendents, turf managers and athletic field managers are the target audience for this project. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided? the implication of the study have been reported in college classes (HCS 4570) at the Ohio State University and at conferences in New Zealand, Australia, and China. How have the results been disseminated to communities of interest? The results from this year’s data has been presented at the Ohio State University Turf Field Day in August (approximately 300 attendees), and at the Turf Science Live meeting in Chicago to over 50 golf course superintendents. The results have been reported in college classes (HCS 4570) at The Ohio State University. What do you plan to do during the next reporting period to accomplish the goals? Quantify more clearly the benefits of brushing on reducing dew formation and the impact it has on the turfgrass plant in relation to disease development. We propose to set up various levels of brushing treatmetns and quantify the effects through the amount of dollar spot that occurs.
Impacts
What was accomplished under these goals?
We found that brushing, a practice where you literally brush the putting green to make the turf more upright in growth habit reduced the amount of dew accumulation. Prior to morning mowing, plots that were brushed had the least amount of dew formation. In addition the brushed plants the leaf tissue removed had lower moisture content. Following dew removal (not yet mowed), plots that were previously brushed appear healthier and do not show any signs of stress from an aggressive brushing. Brushing appears to be a practice that could be instuted into regular putting green management that could provide a healthier and potentially more disease tolerant turf.
Publications
|
Progress 01/01/13 to 09/30/13
Outputs
Target Audience: Golf course superintendents, managers and athletic field managers are the target audience for this project. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided? Data were collected from experiments measuring the amount of dew in relation to the occurrence of dollar spot on creeping bentgrass turf. The site was established to 'Penncross' creeping bentgrass on a root zone mix that met United States Golf Association specifications. The implication of the study have been reported in college classes (HCS 4570) at the Ohio State University and at conferences in California, Montana, and Ohio. We have used the results to help golf course managers incorporate rolling and targeted watering to reduce the dew period. We have found on firm dry turf that is rolled a few hours after mowing the amount of dollar spot may be reduced. How have the results been disseminated to communities of interest? The information we have collected currently we have disseminated to golf course superintentends and athletic field managers through website postings (buckeyeturf.osu.edu), social media, and through speaking engagements. What do you plan to do during the next reporting period to accomplish the goals? We plan on looking at the best time to remove dew as measured by a reduction in dollar spot from various combination of treatments including green's rolling, mowing, and irrigation.
Impacts
What was accomplished under these goals?
With increased pressure to reduce the use of fungicides from both an economical and environmental perspective, alternate suppression methods need to be identified. Dollar spot a wide spread disease of high quality turf is a chronic problem. Through our work we have implemented practices on golf courses incorporating rolling an hour after mowing greens to reduce the amount of dollar spot present. By introducing rolling an hour or so after mowing we were able to reduce the wetting period in the form of guttation water significantly. By reducing irrigation to the turf, thus keeping the turf drier we have reduced the amount of dollar spot present. The combination of rolling and proper water management should help reduce the need for fungicide applications.
Publications
|
Progress 01/01/12 to 12/31/12
Outputs
OUTPUTS: Data were collected from experiments measuring the amount of dew in relation to the occurrence of dollar spot on creeping bentgrass turf. The site was established to 'Penncross' creeping bentgrass on a root zone mix that met United States Golf Association specifications. The implication of the study have been reported in college classes (HCS 2270, 4570) at the Ohio State University and at conferences in California, Idaho, Ohio, and Pennsylvania. we have used the results to help golf course managers incorporate rolling and targeted watering to reduce the dew period. We have found on firm dry turf that is rolled a few hours after mowing the amount of dollar spot may be reduced. PARTICIPANTS: Arly Drake a graduate student in the Department of Horticulture and Crop Science was helpful in the study during 2013. She learned plot design and data collection. TARGET AUDIENCES: Golf course superintendents and athletic field managers are the target audience for this research. PROJECT MODIFICATIONS: The project was revised in the fall of 2012
Impacts
With increased pressure to reduce the use of fungicides from both an economical and environmental perspective, alternate suppression methods need to be identified. Dollar spot a wide spread disease of high quality turf is a chronic problem. Through our work we have implemented practices on golf courses incorporating rolling an hour after mowing greens to reduce the amount of dollar spot present. By introducing rolling an hour or so after mowing we were able to reduce the wetting period in the form of guttation water significantly. By reducing irrigation to the turf, thus keeping the turf drier we have reduced the amount of dollar spot present. The combination of rolling and proper water management should help reduce the need for fungicide applications.
Publications
- Alejandra Acuna and Karl Danneberger. 2012. El arte del riego. website: globalcesped.org. April 11, 2012. http://globalcesped.org/noticias-mainmenu-2/cultural-practices/656-el -arte-del-riego
|
Progress 01/01/11 to 12/31/11
Outputs
OUTPUTS: Data were collected from experiments measuring dew as impacted of soil moisture and surface firmness on the presence or absence of dollar spot on Penncross creeping bentgrass putting greens established on United States Golf Association specified root zone mix. The implications of the study have been presented in classes at The Ohio State University (Horticulture and Crop Science 270 and 570), the results from the study were presented at various conferences and seminars nationally and internationally (United Kingdom, United Arab Emirates, Austria, France, Germany, and Italy). The information has been published on international websites in English, Spanish, Portuguese, Polish, Czech, and Chinese. PARTICIPANTS: Arly Drake and Tom Jacques were undergraduate students involved in the study during the summer of 2011. Both students learned proper field plot design, collecting both qualitative and quantitative data. They also gained some experience in statistically analyzing the data. TARGET AUDIENCES: The targeted audience for the research was golf course superintendents and athletic field managers (professional, school systems, etc.). The information was communicated through presentations given at organized group meetings. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.
Impacts
With increased pressure to reduce the use of fungicides from both an economical and environmental perspective, alternative control methods need to be identified. Dollar spot caused by the pathogen Sclerotinia homoeocarpa is a serious disease of highly maintained cool season turfgrasses. The length of the dew period has been associated with dollar spot severity. Reducing the soil moisture in the turfgrass root zone has provided a firmer putting green surface and reduced the frequency and severity of dollar spot. The lower soil moisture has reduced the amount of dew present, which may have contributed to the reduction in disease. On high maintenance turf like creeping bentgrass putting greens may result in a 30 percent reduction in fungicide application. The fungicide reduction from an economic perspective could result in a cost savings of 4,000 to 10,000 dollars per golf course in putting green maintenance.
Publications
- No publications reported this period
|
Progress 01/01/10 to 12/31/10
Outputs
OUTPUTS: Data was collected from experiments looking at the impact of soil moisture and surface firmness on the presence or absence of dollar spot on 'Penncross' creeping bentgrass putting greens established on a USGA specified root zone mix. The implications of the study have been presented in classes at The Ohio State University (HCS 270 & 570). Events - The study has been presented at local golf course superintendent and club official meetings through Ohio (ex. NCR Country Club), The Ohio State University Turfgrass Field Day, Columbus, OH. August, 2010, and at the Austrian Golf Association meeting in Vienna, Austria. Products - Articles have been published online on English (http://buckeyeturf.osu.edu) and Spanish (http://globalcesped.org) websites. PARTICIPANTS: An undergraduate student, Arly Drake was hired to coordinate the study. TARGET AUDIENCES: Golf course superintendents, and athletic field managers (professional, school systems, etc.). The information was communicated through presentations given at organized group meetings. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.
Impacts
Reducing the soil moisture in the root zone provided a firmer putting green surface and reduced the frequency and amount of dollar spot. The drier conditions reduced the amount of dew present, which may have contributed to the reduction in disease. On high maintenance turfgrass the reduction in disease associated with drier surfaces may result in a 30% reduction in fungicide treatments to control this disease. The cost savings could range between 4,000 and 10,000 dollars per golf course for putting green maintenance.
Publications
- No publications reported this period
|
Progress 01/01/09 to 12/31/09
Outputs
OUTPUTS: Activities - Studies were initiated and data collected from experiments looking at the impact of the presence or absence of dew on dollar spot occurrence. The implication of the studies have been presented in classes at The Ohio State University (HCS 270 & 570) Events - The studies were discussed at the Ohio Turfgrass Foundation Field Day, Columbus Ohio August 2009; Results were discussed as part of seminar presentations in the United Kingdom during October 2009. Products - Articles have been published on Internet websites in English (http://buckeyeturf.osu.edu), and in Spanish (http://globalcesped.org) and Portuguese (http://globalrelva.org) PARTICIPANTS: Not relevant to this project. TARGET AUDIENCES: The targeted audience for the research was golf course superintendents and athletic field managers (professional, school systems, etc.) The information was communicated the group through presentations given at organized group meetings and through updates on the buckeyeturf website (http://buckeyeturf.osu.edu) PROJECT MODIFICATIONS: Not relevant to this project.
Impacts
Our research has demonstrated that the severity of dollar spot can be reduced by as much as 40% if dew periods are significantly reduced. Through practices such as rolling, a light watering, or whipping after an initial mowing turfgrass managers can reduce the amount of fungicide needed over a season to control dollar spot.
Publications
- No publications reported this period
|
Progress 01/01/08 to 12/31/08
Outputs
OUTPUTS: In the absence of rain or irrigation, the moisture that appears overnight on the turf leaf blade is called dew. Disease severity, specifically dollar spot is associated with the presence of continual moisture on the leaf blade. During 2008, we looked at the impact of removing dew through mowing on dollar spot occurrence. The study was conducted on research putting greens established to the creeping bentgrass (Agrostis stolonifera) cultivar "Penncross" located at the Ohio Turfgrass Foundation Research and Education Facility. Treatments consisted of mowing, mowing followed by a rolling 1 hr after mowing, and an unmowed control. Treatments were replicated three times and initiated at 8 am. The study ran from May 22, 2008 through August 15, 2008. Dew was quantified daily using sheets of pre-weighed blotting paper pressed on to the wet turf within each plot prior to and following each treatment. After blotting the paper was weighed to give the mass of dew and water that had accumulated. Percent dollar spot (pathogen Sclerotinia homoeocarpa). Dollar spot pressure was light during 2008. No differences were detected in the amount of dollar spot present in the treatments. The plots had received adequate nitrogen, which may have reduced disease severity. The mowing treatments reduced dew by 24 percent compared to the unmowed plots. Those that were rolled 1 hr after mowing had 35 percent reduction in moisture compared to the untreated. PARTICIPANTS: A undergraduate student, Jonathan Price, helped gather data on this study during the spring and early summer of 2008 as part of an undergraduate research study. TARGET AUDIENCES: Golf course superintendents, athletic field managers, industry personnel PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.
Impacts
Removal of dew early in the morning will reduce morning dew levels. Mowing and then rolling within 1 hour after mowing has the potential to reduce dew periods significantly. The shortening of the dew period has the potential to reduce dollar spot severity and thus fungicide use on golf courses and other high maintenance turf areas.
Publications
- No publications reported this period
|
Progress 01/01/07 to 12/31/07
Outputs
OUTPUTS: An enhanced podcast based on the review of literature for this project was created. The podcast was developed for general consumption, but primarily for golf course and athletic field managers. The podcast can be accessed through the OSU turfgrass program web site (http://buckeyeturf.osu.edu) and through through iTunes.
TARGET AUDIENCES: Targeted audiences include academic and industry researchers and turfgrass professionals.
Impacts
Initial fall studies show that reducing the dew period reduced the amount of dollar spot present on a creeping bentgrass putting green. Dew removal either by early morning mowing, poling, or a light irrigation were effective means for reducing dollar spot incidence. Turf managers through early morning dew removal can reduce dollar spot severity, which may lead to less fungicide applications to the turf. We have published our initial results through the production of an enhanced podcast which provides both audio and photographs. Availability of this report can be accessed by turfgrass managers and the general public through iTunes
Publications
- Danneberger, T.K. 2007. Characteristics of Dew. The Ohio State University Turf Web Site (http://buckeyeturf.osu.edu) December 13.
|
|