Download or read book The Effect of Trinexapac Ethyl and Three Nitrogen Sources on Creeping Bentgrass Agrostis Stolonifera Grown Under Three Light Environments written by Edward John Nangle and published by . This book was released on 2008 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Shade stress on creeping bentgrass (Agrostis stolonifera) causes elongation of leaves, reduced energy availability for growth and lower levels of disease resistance resulting in poor quality putting surfaces. Decreased quantity or photosynthetic photon flux density (PPF) and quality or the red:far red light ratio (R:FR) of light affects the morphology of turfgrass plants by increasing production of giberellic acid and reducing available non-structural carbohydrates. The object of the study was to determine which source of nitrogen (N) is best suited to retaining turfgrass quality in shade and to see if the plant growth regulator trinexapac-ethyl [4-(cyclopropyl-[alpha]-hydroxy-methylene)-3,5-dioxo-cyclohexane carboxylic acid ethyl ester] (TE) (Syngenta AG, Switzerland) can improve density and combat the loss of surface quality of bentgrass under tree shade. Field studies were conducted on 'Penncross' creeping bentgrass (Agrostis stolonifera) in Columbus, in 2006, and 2007. Under three light environments: full sun (FS), reduced R:FR (DS), and reduced PPF (NS). Light reduction was>90% in both shade areas and the R:FR ratio was .38 in the DS area, 1.28 in NS, and 1.29 in FS. The three N treatments included (NH2)2CO, Ca(NO3)2 and (NH4)2SO4 foliarly applied weekly at a rate of 0.43g m-2 with or without TE applied bi-weekly at 0.3975 L ha-1. Chlorophyll content, along with non-structural carbohydrates, flavonoids, turf canopy color, dry matter and canopy densities were measured. There were no differences in soluble carbohydrate levels between treatments. Chlorophyll levels varied between TE treated and non-treated areas. Applications of (NH2)2CO consistently resulted in higher content of N15 in turfgrass plants also but there was no effect in nitrogen uptake kinetics due to light environment differences. TE had a negative impact on quantities of flavonoids. There was variation between the N treatments in relation to dry matter and carbohydrate content. (NH2)2CO in combination with TE provided the best visual quality surface as the season progressed. TE was effective in reduced PPF conditions and R:FR conditions which would indicate it as a possible product for use in shade management of creeping bentgrass Agrostis stolonifera. It was equally efficient in both light environments suggesting that prior shade research using NS is relevant to shade management in private industry. There was not a strong indication as to a preferred source of N.(NH2)2CO had positive impacts on total chlorophyll content.
Download or read book Effect of Three Plant Growth Regulators and Two Nitrogen Regimes on Growth and Performance of Creeping Bentgrass Agrostis Palustris Huds written by Ronald Nigel Calhoun and published by . This book was released on 1996 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Chlorophyll Research and Application 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-06-21 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Chlorophyll Research and Application: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Chlorophyllides. The editors have built Advances in Chlorophyll Research and Application: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Chlorophyllides in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Advances in Chlorophyll Research and Application: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Trinexapac ethyl and Nitrogen Effects on Creeping Bentgrass Under Reduced Light Conditions written by Ryan Michael Goss and published by . This book was released on 2000 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Meetings Abstracts written by American Society of Agronomy and published by . This book was released on 1999 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Plant and Crop Stress Fourth Edition written by Mohammad Pessarakli and published by CRC Press. This book was released on 2019-08-06 with total page 1199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of the third edition of the Handbook of Plant and Crop Stress, continuous discoveries in the fields of plant and crop environmental stresses and their effects on plants and crops have resulted in the compilation of a large volume of the latest discoveries. Following its predecessors, this fourth edition offers a unique and comprehensive collection of topics in the fields of plant and crop stress. This new edition contains more than 80% new material, and the remaining 20% has been updated and revised substantially. This volume presents 10 comprehensive sections that include information on soil salinity and sodicity problems; tolerance mechanisms and stressful conditions; plant/crop responses; plant/crop responses under pollution and heavy metal; plant/crop responses under biotic stress; genetic factors and plant/crop genomics under stress conditions; plant/crop breeding under stress conditions; empirical investigations; improving tolerance; and beneficial aspects of stressors. Features: Provides exhaustive coverage written by an international panel of experts in the field of agriculture, particularly in plant/crop stress areas Contains 40 new chapters and 10 extensively revised and expanded chapters Includes three new sections on plant breeding, stress exerted to weeds by plants, and beneficial aspects of stress on plants/crops Numerous case studies With contributions from 100 scientists and experts from 20 countries, this Handbook provides a comprehensive resource for research and for university courses, covering soil salinity/sodicity issues and plant/crop physiological responses under environmental stress conditions ranging from cellular aspects to whole plants. The content can be used to plan, implement, and evaluate strategies to mitigate plant/crop stress problems. This new edition includes numerous tables, figures, and illustrations to facilitate comprehension of the material as well as thousands of index words to further increase accessibility to the desired information.
Download or read book Plant Growth Regulator Abstracts written by and published by . This book was released on 2002 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multi year Effects of Granular and Foliar Nitrogen Fertilizers on Penn A 4 Creeping Bentgrass Agrostis Palustris Huds Grown on Three Rootzones written by Miyuan Xiao and published by . This book was released on 2012 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Plant and Crop Physiology written by Mohammad Pessarakli and published by CRC Press. This book was released on 2021-07-13 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continuous discoveries in plant and crop physiology have resulted in an abundance of new information since the publication of the third edition of the Handbook of Plant and Crop Physiology. Following its predecessors, the fourth edition of this well-regarded handbook offers a unique, comprehensive, and complete collection of topics in the field of plant and crop physiology. Divided into eleven sections, for easy access of information, this edition contains more than 90 percent new material, substantial revisions, and two new sections. The handbook covers the physiology of plant and crop growth and development, cellular and molecular aspects, plant genetics and production processes. The book presents findings on plant and crop growth in response to climatic changes, and considers the potential for plants and crops adaptation, exploring the biotechnological aspects of plant and crop improvement. This content is used to plan, implement, and evaluate strategies for increasing plant growth and crop yield. Readers benefit from numerous tables, figures, case studies and illustrations, as well as thousands of index words, all of which increase the accessibility of the information contained in this important handbook. New to the Edition: Contains 37 new chapters and 13 extensively revised and expanded chapters from the third edition of this book. Includes new or modified sections on soil-plant-water-nutrients-microorganisms physiological relations; and on plant growth regulators, both promoters and inhibitors. Additional new and modified chapters cover the physiological responses of lower plants and vascular plants and crops to metal-based nanoparticles and agrichemicals; and the growth responses of plants and crops to climate change and environmental stresses. With contributions from 95 scientists from 20 countries, this book provides a comprehensive resource for research and for university courses, covering plant and crop physiological responses under normal and stressful conditions ranging from cellular aspects to whole plants.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1999 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Biostimulants on Creeping Bentgrass Agrostis Stolonifera and Post harvest Debris of American Ginseng Panax Quinquefolius on Soil Microbiology and Chemistry written by Ivan D. Samur and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The efficacy of biostimulants on turfgrass creeping bentgrass (A. stolonifera) were tested in lab and greenhouse growth conditions. Biostimulants with initial efficacy improving greenness and/or biomass in lab trials mainly improved the physiology of the plant. The novelty of this study is the exogenous foliar application of phycocyanin on turfgrass as well the evaluation of GABA, GB, and R. intraradices on different creeping bentgrass cultivars under non-stress conditions. However, biostimulants affected different parameters of turfgrasses affected by cultivar. Ilyonectria mors-panacis causes low levels of root rot of American ginseng (Panax quinquefolius) in non-replant soil, but high levels when ginseng is grown in previously planted soil with ginseng, which results in replant disease (Farh et al, 2018). This study clearly shows that post-harvest debris decay of ginseng introduces considerable material into soil that has at least short-term effects, such as those observed with soil bacterial populations.
Download or read book Agronomy Abstracts written by and published by . This book was released on 1995 with total page 1348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes abstracts of the annual meetings of the American Society of Agronomy; Soil Science Society of America; Crop Science Society of America ( - of its Agronomic Education Division).
Download or read book Science and Golf IV written by Eric Thain and published by Routledge. This book was released on 2012-11-12 with total page 869 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth World Scientific Congress of Golf, to be held in St Andrews in July 2002, will bring together all of the world's leading golf researchers. Science and Golf IV will present 90 or so of the best research papers delivered at the Congress, and represents the latest volume in a unique and essential series of scientific studies in golf. The book is organised into four thematic sections, looking at the golfer, golf equipment, the golf course, and the social and economic impact of golf respectively, and addresses key topics such as: * the psychology of golf * biometrics of the swing * new developments in clubs, balls and teaching aids * golf agronomy, irrigation and drainage * the impact of golf on the community * representing the most up-to-date collection of research available. Science and Golf IV is essential reading for all sport scientists and researchers with an interest in golf, all club professionals, and all those working in technical aspects of the golf industry.
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 2000 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Altered Assimilate Allocation and Partitioning Due to PCGA2 OXIDASE Overexpression on the Growth and Performance of Creeping Bentgrass Agrostis Stolonifera L in Full Sun and Reduced Light written by Aneta Karolina Studzinska and published by . This book was released on 2011 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Creeping bentgrass (Agrostis stolonifera L.) is a species commonly used in high maintenance turf areas. When grown under shade conditions, A. stolonifera becomes thin, elongated, and looses stem and root mass which ultimately leads to loss of turfgrass coverage. These responses to light stimuli are mediated, in part, by phytohormones, gibberellins. Suppression of gibberellin levels by overexpression of genes involved in their catabolism has been proven to successfully control plant stature. Gibberellin suppression also alters plant morphology and photosynthetic characteristics. The objective of this study was to determine the effect of runner bean (Phaseolus coccineus) GA2ox gene (PcGA2ox) overexpression (which increases gibberellin catabolism) on creeping bentgrass quality and performance under various light conditions and intense, short mowing height. GA2ox overexpression resulted in superior quality of Ax6549 under all shade treatments by delaying the decline of its color and coverage. Photosynthetic characterization indicated higher photosynthate supply per leaf area unit and enhanced low light use efficiency as potential factors associated with superior performance of Ax6549 under reduced light conditions. However, growth analysis data indicated lower growth efficiency and leaf productivity in Ax6549. Although this appeared to be contradictory to data obtained through photosynthetic characterization, this contradiction could be explained by increased self shading in Ax6549 due to greater leaf width and having a more horizontal leaf orientation. Morphological data did not help clarify the methods of improved performance of Ax6549 under shaded conditions. Whole canopy photosynthetic measurements performed at different cutting heights are likely needed to further explain the incongruities between photosynthetic and growth analysis data.
Download or read book Effect of Plant Growth Regulators on Creeping Bentgrass and Bentgrass Growth and Health During Heat Salt and Combined Heat and Salt Stress written by Arly Marie Drake and published by . This book was released on 2019 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: However, at times it is subjected to environmental stresses such as heat and salt. In field settings plants are often subjected to more than one stress at a time and studying stresses independently is likely insufficient. These stresses can affect plant hormone levels and, in turn, plant hormone levels can affect how well the plant tolerates stress. There were two experiments conducted. In the first experiment creeping bentgrass was transplanted into hydroponics systems in two different growth chambers. One chamber was set to have day and night time temperatures of 35 and 30-degrees Celsius, respectively. The other was set to have a day and night time temperatures of 25 and 20-degrees, respectively. Within each chamber one block received a 50 mM sodium chloride (NaCl) treatment and the other did not. Creeping bentgrass (Agrostis stolonifera L.) is a turfgrass species that is widely used on golf courses throughout the United States. It can withstand extremely low mowing heights and can provide a dense cover making it an ideal species for low cut areas of the golf course. The stress treatments were applied for 14 days. The experiment was repeated four times. Results of the first experiment indicated that the treatments were sufficient to negatively affect creeping bentgrass growth and health as indicated by fresh shoot and root weights, tillering, electrolyte leakage and total chlorophyll content (TCC). There were significant interactions between temperature and salt level detected for shoot and root weights and electrolyte leakage. Plants that were exposed to both heat and salt stress were more negatively affected than plants exposed to either heat or salt stress alone for all metrics except for tillering. The presence of NaCl reduced tillering regardless of temperature regime. In the second experiment plants were treated the same, but plant growth regulator (PGR) treatments were also applied. The second experiment was repeated six times and PGR treatments were re-randomized within the block each time. The PGR treatments consisted of two different gibberellin (GA) synthesis-inhibitor products, 2,4-dichlorophenoxy acid (2,4-D), two different rates of aminoethoxyvinylglycine (AVG), an ethylene synthesis suppressor, and plants that were not treated with a PGR. In addition to the aforementioned measurements of plant health and growth dry shoot and root weights were also measured. There were two significant interactions detected in the second experiment. For TCC there was a two-way interaction between temperature and PGR treatment and for electrolyte leakage there was a three-way interaction between temperature, salt level and PGR treatment. Combined heat and salt stress negatively affected all plants regardless of PGR treatment, but there were differences between PGR treatments. Plants treated with AVG performed better than the other PGR treatments. These plants had the highest shoot and root masses. Plants treated with GA-synthesis inhibitors had the lowest shoot and root masses as well as the lowest TCC when subjected to stress.
