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Book: Proceedings of the Second International Turfgrass Research Conference
Published by: American Society of Agronomy, Crop Science Society of America

 

 

This chapter in PROCEEDINGS OF THE SECOND INTERNATIONAL TURFGRASS RESEARCH CONFERENCE

  1.  p. i-xxvi
     
    Proceedings of the Second International Turfgrass Research Conference

    Eliot C. Roberts (ed.)

    ISBN: 978-0-89118-573-4

    OPEN ACCESS
     
    Published: 1974


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doi:10.2135/1974.proc2ndintlturfgrass.frontmatter

Front Matter

Foreword

At the request of the International Turfgrass Society (ITS), the American Society of Agronomy (ASA) and the Crop Science Society of America (CSSA) agreed to publish the proceedings of the Second International Turfgrass Research Conference. It is the hope and belief of all three societies that this joint effort will make a significant contribution toward the advancement of turfgrass science around the world.

The ITS is a very young organization, having been organized at the First International Turfgrass Research Conference in Harrogate, England, in July 1969. The ASA and CSSA take pride in the role played by their Turfgrass Division (C-5) in the organization of the First Conference and the formation of the ITS. The wisdom of the organizing committee and other supporters of that conference becomes more apparent from the vantage point of time. Both public interest in improved turfgrasses and research effort with the goal of improving sports fields, recreational areas, roadsides, and lawns have increased throughout the “developed” world since the first conference in Harrogate. One hundred ninety-two turfgrass scientists representing 15 countries attended the Second Conference. As evidence of increased worldwide interest in turfgrass, more scientists from countries other than the United States attended the Second Conference in Blacksburg, Virginia, USA, than attended the First Conference in England. Total attendance at the Second Conference was more than twice that of the First Conference.

This Proceedings of the Second Conference represents a mammoth effort by both authors and editors. In addition to the usual problems of preparing a publication, language barriers and international differences in style of writing had to be overcome. All concerned have the gratitude of the officers of the three societies involved with this joint effort.

Darell E. McCloud, President

American Society of Agronomy

Richard R. Davis, Chairman

Executive Committee,

International Turfgrass Society;

President, Crop Science Society

of America

Preface

The second research conference of the International Turfgrass Society featured more than 80 presentations concerned with turfgrass culture and use throughout the world. Representatives of 15 countries discussed the significance of research findings and commented on research approaches and techniques of importance in their varying geographic locations. The compilation of these papers and the discussions provides a unique presentation of current turfgrass scientific information of the widest practical importance.

These proceedings are dedicated to the objective of providing turfgrass information that can be used in the synthesis of concepts to better serve the needs of people who grow and use turf under diverse landscape and sports situations. In order to provide this type of information, subject matter is approached in several different ways. Some papers emphasize fundamental and applied research and provide detail concerning research techniques and methodology. Other papers consider developmental research approaches or demonstrations and evaluations of various cultural practices. Still other papers are concerned with reviews of the current “state of the art” and with formulation of new approaches based on past experience in the culture of fine turf.

Subject matter presented is arranged in eight topic areas. Reports have been grouped within these areas on the basis of continuity of subject matter and relevance to a common theme for discussion. Considerable overlap exists between areas, and thus the subject index is recommended in use of this volume for reference purposes.

Transactions of this conference included the presentation of current practical information relating to turfgrass production and use throughout the world and involved both cool-and warm-season grasses. Turfgrass breeding and cultivar evaluation topics emphasize the importance of induced mutations, isolation barriers and self-compatibility, flowering, seed characteristics and quality, variety registration, and evaluation under actual and simulated wear and by use of infrared photography. Cultural practices are described for turfgrass types varying from roadside to putting green. Fertilization effects on carbon assimilation, carbohydrates, and proteins; clipping and use of growth regulators; watering, including subirrigation; topdressing; and thatch control and overseeding are discussed. Environmental influences such as temperature, including soil warming; moisture; and light intensity and quality are related to turf management practices. Soils and their modification through use of organic matter and other amendments to improve root development are featured in papers concerning vertical drainage bands, the Prescription Athletic Turf System, and the United States Golf Association Green Section specifications. Disease, insect, and weed control reports consider both cultural and chemical practices. Proneness of grasses to disease and tolerance to fungicides, effects of herbicides on establishment of turf from seed and sod, and use of charcoal to deactivate pesticides are presented as key concepts in turfgrass management for the 1970's.

These reports demonstrate the existence of considerable variation in the research base upon which conclusions are generated. Some investigators present research data from field experiments conducted over periods of several years, and these results reflect the influence of changing environmental conditions and variations in the cultivars evaluated. Other investigators have reported on short-term studies conducted under controlled environmental conditions, with one to a few cultivars represented. These studies may be considered preliminary when related to general response situations or they may be viewed as providing insight for a better understanding of the cultural requirements of a specific cultivar under a narrow range of growth conditions. Many of these investigators report important new leads for further study, trial, and evaluation. Thus, the varying degree of generality or in-depth study provides overall variability in approach and subsequent strength regarding the usefulness of these proceedings in the formation of new concepts of practical importance for turfgrass specialists and landscape horticulturists.

The various reports also reflect current needs for turfgrass related information in the geographic location represented by the research specialist. Turfgrass cultural and environmental conditions vary throughout the world and, thus, information needs vary from place to place. As these needs change at any given location so do research methods and procedures for evaluations of turfgrass response. Further, how turfgrass research information is used varies throughout the world. For example, courses of study in turfgrass management and in landscape horticulture may provide an informational demand of primary importance in some areas. Cooperative extension programs, which are well developed in the United States, as well as various consultation services and agencies, utilize applied, developmental, and feasibility research results in drafting specifications and in making practical recommendations. Fundamental research provides a foundation of knowledge upon which all of turfgrass science is based. Also, uses of turfgrasses differ throughout the world not only because of climatic and soil variables but also because of varying quality standards established by the public. Maintenance and cultural practices and problems are often related, either as cause or effect, to the established quality of turf produced. These proceedings provide insight towards a better understanding of turfgrass science in the broadest sense.

In order to present these concepts in the most universely accepted format an editorial board of specialists active within the American Society of Agronomy has served in a review and advisory capacity. All measurements have been standardized using metric units so that reference may be made between different articles without conversion. A table of conversion factors is included for the convenience of those who wish to relate data presented to other units of measurement.

Recorded in an appendix are the transactions of the business meeting for the International Turfgrass Society. This meeting holds historic significance because of the adoption of a Constitution and Bylaws for the organization. This document and other related information are presented in Section IX.

Thus, these proceedings provide a significant informational resource for turf managers and for commercial consultants. They serve as reference material for instructors in landscape and turfgrass maintenance courses of study and as important aids to students assigned special topic problems or completing preparations for seminar presentations. In addition, they provide a reference resource for members of the International Turfgrass Society and for all turfgrass research and extension personnel who strive to keep up-to-date in this rapidly developing science of turfgrass culture and management.

Eliot C. Roberts, Ph.D.

Editor

 

International Turfgrass Society

Identification of Delegates

Second Research Conference Photograph

Virginia Polytechnic Institute and State University

Blacksburg, Virginia

June 19, 1973

  1. J. F. Shoulders (U.S.A.)

  2. R. C. Wakefield (U.S.A.)

  3. G. M. Wood (U.S.A.)

  4. A. M. Radko (U.S.A.)

  5. W. W. Huffine (U.S.A.)

  6. F. V. Juska (U.S.A.)

  7. Yoshisuke Maki (Japan)

  8. Toyoji Hosotsuji (Japan)

  9. Kaoru Ehara (Japan)

  10. Saburo Kakuta (Japan)

  11. B. H. Baba (Japan)

  12. Tom Mascaro (U.S.A.)

  13. Any Castaings (France)

  14. J. B. Beard (U.S.A.)

  15. G. M. Kozelnicky (U.S.A.)

  16. D. T. Duff (U.S.A.)

  17. A. J. Powell (U.S.A.)

  18. J. L. Kidwell (U.S.A.)

  19. A. E. Dudeck (U.S.A.)

  20. C. T. Blake (U.S.A.)

  21. W. B. Gilbert (U.S.A.)

  22. W. R. Kneebone (U.S.A.)

  23. L. H. Taylor (U.S.A.)

  24. G. V. Johnson (U.S.A.)

  25. G. G. Fisher (Neth.)

  26. H. M. Day (U.S.A.)

  27. M. Fukui (Japan)

  28. Y. Kamon (Japan)

  29. E. Kawazoe (Japan)

  30. J. P. Shildrick (U.K.)

  31. R. M. Endo (U.S.A.)

  32. Richard Brunner (W. Ger.)

  33. Peter Boeker (W. Ger.)

  34. J. P. van der Horst (Neth.)

  35. C. W. Goldberg (U.S.A.)

  36. Ian Greenfield (U.K.)

  37. G. C. Nutter (U.S.A.)

  38. C. J. Gould (U.S.A.)

  39. J. H. Dunn (U.S.A.)

  40. S. W. Bingham (U.S.A.)

  41. R. E. Schmidt (U.S.A.)

  42. W. C. Morgan (U.S.A.)

  43. C. R. Skogley (U.S.A.)

  44. B. V. Daugherty (U.S.A.)

  45. E. C. Roberts (U.S.A.)

  46. Don Parsons (U.S.A.)

  47. C. A. Kouskolekas (U.S.A.)

  48. J. B. Powell (U.S.A.)

  49. P. F. Colbaugh (U.S.A.)

  50. K. W. Kurtz (U.S.A.)

  51. Hans Prun (W. Ger.)

  52. Roger Loiseau (France)

  53. Francois Loiseau (France)

  54. Marc Masson (France)

  55. E. R. Steiniger (U.S.A.)

  56. A. C. Ferguson (Canada)

  57. W. M. Lewis (U.S.A.)

  58. V. A. Gibeault (U.S.A.)

  59. J. E. Kaufmann (U.S.A.)

  60. W. H. Bengeyfield (U.S.A.)

  61. R. E. Engel (U.S.A.)

  62. J. J. Murray (U.S.A.)

  63. R. E. Blaser (U.S.A.)

  64. G. W. Burton (U.S.A.)

  65. R. W. Nelson (U.S.A.)

  66. D. F. Marion (U.S.A.)

  67. R. R. Davis (U.S.A.)

  68. J. M. Latham (U.S.A.)

  69. J. R. Watson (U.S.A.)

  70. J. E. Gallagher (U.S.A.)

  71. Hal Weitz (U.S.A.)

  72. V. B. Youngner (U.S.A.)

  73. H. H. Williams (U.S.A.)

  74. R. M. Schmit (U.S.A.)

  75. W. A. Meyer (U.S.A.)

  76. C. R. Funk (U.S.A.)

  77. G. E. Jurgensen (U.S.A.)

  78. M. M. Fulton (U.S.A.)

  79. J. R. Hall (U.S.A.)

  80. H. Vos (Neth.)

  81. C. H. Hamrle (Austria)

  82. B. A. Rieger (Canada)

  83. R. J. Hull (U.S.A.)

  84. T. W. Cook (U.S.A.)

  85. F.J. Wray (Canada)

  86. H. W. Indyk (U.S.A.)

  87. E. H. Odell (U.S.A.)

  88. W. E. Sieveking (Canada)

  89. S. G. Fushtey (Canada)

  90. K. T. Payne (U.S.A.)

  91. D. R. Fyfe (N. Zeal.)

  92. H. D. Niemczyk (U.S.A.)

  93. R. T. Westfall (U.S.A.)

  94. Sven-Ove Dahlsson (Sweden)

  95. Kyosti Raininko (Finland)

  96. D. J. Glas (Neth.)

  97. J. D. Smith (Canada)

  98. K. M. Beckman (U.S.A.)

  99. T. J. Gillespie (Canada)

  100. J. L. Eggens (Canada)

  101. J. F. Wilkinson (U.S.A.)

  102. D. P. Martin (U.S.A.)

  103. R. W. Miller (U.S.A.)

  104. J. R. McCloud (U.S.A.)

  105. L. M. Callahan (U.S.A.)

  106. P. M. Halisky (U.S.A.)

  107. W. C. Stienstra (U.S.A.)

  108. C. W. Winstead (U.S.A.)

  109. H. D. Palmertree (U.S.A.)

  110. D. E. Brown (U.S.A.)

  111. D. V. Waddington (U.S.A.)

  112. B. J. Johnson (U.S.A.)

  113. J. Lauwers (Belgium)

  114. R. C. O'Knefski (U.S.A.)*

  115. S. J. Han (U.S.A.)

  116. Werner Skirde (W. Ger.)

  117. Rudolph Pietsch (W. Ger.)

  118. Reimar Vogel (W. Ger.)

  119. Amand Chesnel (France)

  120. R. W. Schery (U.S.A.)

  121. H. M. Griffin (U.S.A.)

  122. Hans Baukloh (W. Ger.)

  123. L. G. Akesson (Sweden)

  124. H. C. H. Ghijsen (Neth.)

  125. Martin Kamps (Neth.)

  126. R. A. Keen (U.S.A.)

  127. F. B. Ledeboer (U.S.A.)

  128. R. A. Moore (U.S.A.)

  129. J. B. Moncrief (U.S.A.)

  130. Ralph Smalley (U.S.A.)

  131. T. L. Watschke (U.S.A.)

  132. J. D. Butler (U.S.A.)

  133. R. E. Burns (U.S.A.)

  134. E. O. Burt (U.S.A.)

  135. Wouter Versteeg (Neth.)

  136. R. L. Goss (U.S.A.)

  137. R. L. Morris (U.K.)

  138. R. W. Duell (U.S.A.)

  139. K. McVeigh (U.S.A.)

  140. W. F. Cordukes (Canada)

  141. P. McMaugh (Australia)

  142. William Dickens (U.S.A.)

  143. D. T. Hawes (U.S.A.)

  144. Andre Hentgen (France)

  145. E. de Vilmorin (France)

  146. L. H. J. Korsten (Neth.)

  147. C. Schaepman (Neth.)

  148. W. A. Small (U.S.A.)

  149. V. Worrel (U.S.A.)

  150. J. A. Jagschitz (U.S.A.)

  151. D. J. Wehner (U.S.A.)

  152. J. C. Harper (U.S.A.)

  153. C. Y. Ward (U.S.A.)

  154. D. L. Klingman (U.S.A.)

  155. P. E. Rieke (U.S.A.)

  156. Howard Kaerwer (U.S.A.)

  157. Milton Archer (U.S.A.)

  158. D. B. White (U.S.A.)

  159. E. W. Schweizer (Switz.)

  160. R. B. Anda (U.S.A.)

  161. C. M. Switzer (Canada)

  162. Noel Jackson (U.S.A.)

  163. J. M. Vargas, Jr. (U.S.A.)

  164. R.J. Peterson (U.S.A.)

  165. D. K. Taylor (Canada)

  166. W. G. Brown (U.S.A.)

Participants & Contributors

L. G. Aakesson 5-270-50, Hommenhog, Sweden
W. A. Adams* Soil Science Unit, University College of Wales, Aberystwyth, Dyfed, Wales, United Kingdom
R. B. Anda Crops and Soils Department, Michigan State University, East Lansing, MI 48823
M. Archer 1023 Darwick Center, St. Louis, MO 63132
M. Armand C.N.R.A. Route de St. Cyr 78000 Versailles, France
H. Baba 1-17-3 Shiraitodai, Fuchu, Tokyo, Japan
R. T. Bangs O. M. Scott and Sons, Marysville, OH 43040
H. Baukloh Kleinwanzlebener Saatzucht Ag., 3352 Einbeck/Hannover, Postfach 146, West Germany
J. B. Beard* Professor, Department of Crop and Soil Science, Michigan State University, East Lansing, MI 48824
K. M. Beckman The Up john Company, Kalamazoo, MI 49001
W. H. Bengeyfield U. S. Golf Association Green Section, Post Office Box 567, Garden Grove, CA 92642
W. Bidwell Congressional Country Club, Bethesda, MD 20034
Claude Billot* Institut National de la Recherche Agronomique, I.N.R.A.S.E.I., Domaine Expérimental de Gotheron, 26320 Saint-Marcel-Les-Valence, France
S. W. Bingham* Professor, Department of Plant Pathology and Physiology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
Gustaaf Blaak Zwaan and de Wiljes, Ltd., Post Office Box 2, Scheemda, Netherlands
C. T. Blake Crop Science Department, North Carolina State University, Raleigh, NC 27607
G. R. Blake Soil Science Department, University of Minnesota, St. Paul, MN 55101
R. E. Blaser* University Professor of Agronomy, 236 Smyth Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
Peter Boeker* Professor, Institute for Agronomy, University of Bonn, Katzenburgweg 5, 53 Bonn, West Germany
B. Bourgoin* Institut National de la Recherche Agronomique, SAPFINRA, 86600 Lusignan, France
D. E. Brown Virginia Department of Agriculture, Post Office Box 1163, Richmond, VA 23209
W. G. Brown* Department of Horticultural Science, University of Minnesota, St. Paul, MN 55101 (present address: Ciba-Geigy Canada, Agrichemicals Division, 1 Westside Drive, Etobicoke, Ontario)
A. Bruneau O. M. Scott and Sons, Marysville, OH 43040
R. Brunner Sachsenspiegel 11, 8 Munich, West Germany
P. J. Bryan* Estates Department, Kent County Council, Maidstone, Kent, England
R. E. Burns* Associate Professor, Georgia Experiment Station, University of Georgia, Experiment, GA 30212
E. O. Burt Agricultural Research Center, University of Florida, Institute of Food and Agricultural Sciences, 3205 S.W. 70 Avenue, Fort Lauderdale, FL 33314
G. W. Burton* Research Geneticist, Agricultural Research Service, USDA, and the University of Georgia, Georgia Coastal Plain Experiment Station, Tifton, GA 31794
J. D. Butler* Extension Associate Professor, 137 Agriculture Building, Colorado State University, Fort Collins, CO 80523
L. M. Callahan Department of Ornamental Horticulture and Landscape Design, Post Office Box 1071, University of Tennessee, Knoxville, TN 37901
R. A. Cappellini CAES, Post Office Box 231, Rutgers University, New Brunswick, NJ 08903
R. N. Carrow Plant and Soil Science Department, University of Massachusetts, Amherst, MA 01002
A. Castaings B. P. 36, 85003 LaRoche Sur Yon, France
A. Chesnel E Vilmorin, 49750, La Menitre, France
G. E. Coats Department of Plant Pathology and Weed Science, Post Office Box P. G., Mississippi State University, Mississippi State, MS 39762
P. F. Colbaugh* Department of Plant Pathology, University of California, Riverside, CA 92502
Herbert Cole, Jr.* Professor, Department of Plant Pathology and Pesticide Research Laboratory, 211 Buckhout Lab, The Pennsylvania State University, University Park, PA 16802
T. W. Cook Department of Plant and Soil Science, University of Rhode Island, Kingston, RI 02881
W. F. Cordukes Plant Research Institute Agriculture Canada, Ottawa, Ontario, Canada
H. B. Couch Department of Plant Pathology and Physiology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
Sven-Ove Dahlsson* Weibull s Turf Grass Section, S-261 20 Landskrona, Sweden
W. H. Daniel* Professor, Department of Agronomy, Purdue University, West Lafayette, IN 47907
B. Daugherty Capitol Building, Charleston, WV 25305
R. R. Davis Ohio Agricultural Research and Development Center, Wooster, OH 44691
W. B. Davis* Department of Environmental Horticulture, University of California, Davis, CA 95616
H. M. Day Stauffer Chemical Company, Westport, CT 06880
R. den Engelse Dr. Augustynlaan 50, Ryswyk (2.H.) Netherlands
E. de Vilmorin 1 Rue Des Marronniers, 77 - Villemer Par Moret, France
R. Dickens Department of Agronomy and Soils, Auburn University, Auburn, AL 36830
W. Dickens Soils and Crops Department, Lipman, Hall, Rutgers University, New Brunswick, NJ 08903
G. Donohue Hercules, Inc., 910 Market Street, Wilmington, DE 19899
A. T. Dore* Plant and Soil Science Department, College of Resource Development, University of Rhode Island, Kingston, RI 02881 (present address: U.S. Soil Conservation Service, Warwick, RI 02881)
R. L. Dubie* Associate Professor, Texas Agricultural Experiment Station, Soil and Crop Sciences Department, Texas A&M University, College Station, TX 77843
J. P. Duchatelet Vitseroel 60, B-1740 Ternat, Belgium
A. E. Dudeck* Associate Professor, IFAS, University of Florida, Agricultural Research Center, Fort Lauderdale, Florida (present address: IFAS, University of Florida, Gainesville, FL 32601)
R. W. Duell* Associate Research Professor, Soils and Crops Department, Cook College, Rutgers University, Post Office Box 231, New Brunswick, NJ 08903
D. T. Duff* Assistant Professor, Department of Plant and Soil Science, University of Rhode Island, Kingston, RI 02881
J. M. Duich Department of Agronomy, Pennsylvania State University, University Park, PA 16802
J. H. Dunn Horticulture Department, University of Missouri, Columbia, MO 65201
R. Duyvendak* Institute for Research on Varieties of Field Crops, Post Office Box 32, Wageningen, Netherlands
A. N. Ede* Managing Director, Land and Water Management Limited, 88a Girton Road, Cambridge, CB3 OLN, England.
J. L. Eggens* Assistant Professor, Department of Horticultural Science, University of Guelph, Guelph, Ontario, Canada N1G 2W1
K. Ehara 1-10-19 Minamidai, Kamifukuoka-Shi, Saitama-Ken, Japan
B. G. Ellis* Professor, Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI 48824
R. M. Endo* Professor, Department of Plant Pathology, University of California, Riverside, CA 92502
R. E. Engel* Professor, Soils and Crops Department, Cook College, Rutgers University, New Brunswick, NJ 08903
A. C. Ferguson Department of Plant Science, University of Manitoba, Winnipeg, Canada
W. Fines 11 Amble Road, Chelmsford, MA 01824
G. G. Fisher* Land and Water Management Limited, 88a Girton Road, Cambridge CB3 OLN, England
R. P. Freeborg* Department of Agronomy, Purdue University, West Lafayette, IN 47907
T. E. Freeman* Professor, Plant Pathology Department, University of Florida, Gainesville, FL 32611
M. Fukui Toyo Green Company, Ltd., 1-6 Kobunacho 2-Chome, Nihonbashi Chuoku, Tokyo 103, Japan
D. E. Fulton 16 H. Grad. Circle, University Park, PA 16802
M. M. Fulton O. M. Scott and Sons, Marysville, OH 43040
J. L. Fults* Professor, 115a Weed Research Lab, Colorado State University, Fort Collins, CO 80523
C. R. Funk* Research Professor, Soils and Crops Department, Cook College, Rutgers University, New Brunswick, NJ 08903
S. G. Fushtey Department of Environmental Biology, University of Guelph, Guelph, Ontario, Canada
D. Fyfe Post Office Box 51-134, Pakuranga, Aukland, New Zealand
J. E. Gallagher Amchem Products, Inc., Ambler, PA 19002
H. C. H. Ghijsen Wezelaan 12, Wageningen, Netherlands
V. A. Gibeault 1145 Batchelor Hall, University of California, Riverside, CA 92502
W. Gilbert Crop Science Department, North Carolina State University, Raleigh, NC 27607
T. J. Gillespie* Associate Professor, Department of Land Resource Science, University of Guelph, Ontario, Canada N1G 2W1
D. J. Glas D. J. van der Have B. V., Rilland 3648, Netherlands
C. W. Goldberg Department of Plant Pathology, Pennsylvania State University, University Park, PA 16802
R. L. Goss* Western Washington Research and Extension Center, Washington State University, Puyallup, WA 98371
C. J. Gould* Plant Pathologist, Western Washington Research and Extension Center, Washington State University, Puyallup, WA 98371
F. V. Grau Box AA, College Park, MD 20740
J. T. Green, Jr.* Instructor, Department of Agronomy, 339 Smyth Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060
lan Greenfield* Chairman, The Cayford Group (now known as Cayford International), 18 Hadham Road, Bishop's Stortford, Herts, United Kingdom
H. M. Griffin U. S. Golf Association Green Section, Post Office Box 5563, Charlottesville, VA 22903
W. K. Griffith Potash Institute of North America, 865 Seneca Road, Herndon, VA 22070
E. Grundler Soatzucht Steinback Dr., M. V. Schmieder Nachf, 8441 Steinach, West Germany
P. M. Halisky CAES, Post Office Box 231, Rutgers University, New Brunswick, NJ 08903
J. R. Hall* Assistant Professor, Department of Agronomy, 1112 H. J. Patterson Hall, University of Maryland, College Park, MD 20740
C. Hamrle Fa. Agromotor Franz Zimmer, A 1141 Wien, Keisslergasse 26-28, Austria
S. J. Han CAES, Post Office Box 231, Rutgers University, New Brunswick, NJ 08903
J. C. Harper Department of Agronomy, Pennsylvania State University, University Park, PA 16802
D. T. Hawes Agronomy Department, University of Maryland, College MD 20742
André Hentgen* Institut National de la Recherche Agronomique, I.N.R.A.S.E.I., Route de Saint-Cyr, 78000 Versailles, France
J. J. Hintzen Mommersteeg International B. V., Vlijmen, Netherlands
T. Hosotsuji 1-10-19 Minamidai, Kamifukuoka-Shi, Saitama-Ken, Japan
J. E. Howland Plant, Soil and Water Science Division, University of Nevada, Reno, NV 89507
W. W. Huffine Department of Agronomy, Oklahoma State University, Stillwater, OK 74074
T. D. Hughes Department of Ornamental Horticulture, University of Illinois, Urbana, IL 61801
R. J. Hull* Associate Professor, Plant and Soil Science Department, University of Rhode Island, Kingston, RI 02881
H. W. lndyk Soils and Crops Department, Rutgers University, New Brunswick, NJ 08903
Noel Jackson* Associate Professor, Plant Pathology-Entomology Department, 223 Woodward Hall, University of Rhode Island, Kingston, RI 02881
J. A. Jagschitz* Assistant Professor, Rhode Island Agricuhural Experiment Station, Plant and Soil Science Department, University of Rhode Island, Kingston, RI 02881
B. J. Johnson* Associate Professor, University of Georgia College of Agriculture Experiment Station, Experiment, GA 30212
G. V. Johnson* Assistant Professor, Department of Soils, Water and Engineering, University of Arizona, Tucson, AZ 85721
G. Jurgensen Jacklin Seed Company, Inc., East 8803 Sprague Avenue, Spokane, WA 99213
F. V. Juska* (deceased) Turf-Research Agronomist, Agricultural Research Service, USDA, Plant Genetics and Germplasm Institute, Turfgrass Laboratory, Room 338, Building 001, BARC-West, Beltsville, MD 20705
H. Kaerwer Northrup-King Company, 1500 Jackson Street N. E., Minneapolis, MN 55343
S. Kakuta 1-10-19 Minamidai, Kamifukuoka-Shi, Saitama-Ken, Japan
Yasuhiko Kamon* Kansai Golf Union Green Section Research Center, 1303-2 Yamahata, Kurando, Takarazuka 665, Hyogo, Japan
M. Kamps Van Engelen Zaden, Post Office Box 5, Vlijmen, Netherlands
J. E. Kaufmann 17 Plant Science Building, Cornell University, Ithaca, NY 14850
E. Kawazoe 1-10-19 Minamidai, Kamifukuoka-Shi, Saitama-Ken, Japan
R. A. Keen Department of Horticulture, Kansas State University, Manhattan, KS 66506
M. Kerguelen* Institut National de la Recherche Agronomique, Geves La Miniere, 78000 Versailles, France
J. L. Kidwell Kidwell Turf Farms, Route 3, Box 16A, Culpeper, VA 22701
D. L. Klingman ARC-West, Beltsville, MD 20705
W. R. Kneebone Department of Agronomy and Plant Genetics, University of Arizona, Tucson, AZ 85721
L. H. J. Korsten Veredlingsbedrijf Cebeco-Handelsraad, 36 Lisdoddeweg, Lelystad, Netherlands
C. A. Kouskolekas* Associate Professor, Department of Zoology-Entomology, Auburn University, Auburn, AL 36830
G. M. Kozelnicky Department of Plant Pathology and Plant Genetics, University of Georgia, Athens, GA 30602
J. V. Krans* Department of Soils, Water and Engineering, University of Arizona (present address: Department of Crop and Soil Science, Michigan State University, East Lansing, MI 48823)
K. W. Kurtz 1547 North Boulder, Ontario, CA 91762
J. Latham Milwaukee Sewerage Commission, Box 2079, Milwaukee, WI 53201
J. Lauwers Gerard Le Grellelaan, 5 Antwerp, Belgium
F. B. Ledeboer* Assistant Professor, Clemson University, Clemson, SC (present address: Loft Pedigreed Seed, Inc., Post Office Box 146, Bound Brook, NJ 08805)
W. M. Lewis Crop Science Department, North Carolina State University, Raleigh, NC 27607
F. Loiseau 157 Rue Gambetta, 72000 Le Mans, France
R. Loiseau Les Goderies, Ruaudin, 72000 Le Mans, France
J. H. Madison* Professor, Department of Environmental Horticulture, University of California, Davis, CA 95616
Y.Maki Hokkaido National Agricultural Experiment Station, Sapporo, Japan
P. Mansat* Institut National de la Recherche Agronomique, SAPFINRA, 86600 Lusignan, France
D. Marion Department of Plant Pathology-Entomology, University of Rhode Island, Kingston, RI 02881
D.P. Martin Department of Agronomy, Ohio State University, 1827 Neil Avenue, Columbus, OH 43210 ,
T. Mascaro 2210 NE 124th Street, Keystone Point, North Miami, FL 33161
M. Masson Ets. L. Clause - 91220 Bretigny s/Orge, France
H. B. Mayer 565 Solingen, Focher Strausse 30-34, West Germany
J. R. McCloud Post Office Box 419, Norfolk, VA 23501
N. McCollum Department of Horticultural Science, University of Guelph, Guelph, Ontario, Canada
P. McMaugh 4F Eastwood Avenue, Eastwood, N.S.W. Australia 2122
K. McVeigh Box 1741, State Highway 27, Somerset, NJ 08873
E. L. McWhirter* Mississippi Agricultural and Forestry Experiment Station, Post Office Box 5248, Mississippi State, MS 39762
W. A. Meyer 8400 West 111th Street, Palos Park, IL 60464
R. T. Miller Biochemicals Department, DuPont Company, Wilmington, DE 19898
R. W. Miller* Professor, Department of Agronomy, Ohio State University, Research Agronomist, Chem-Lawn Corporation (mailing address: 5532 Shier-Rings Road, Dublin, OH 43017)
J. B. Moncrief U. S. Golf Association Green Section, Post Office Box 4213, Campus Station, Athens, GA 30601
R. A. Moore Post Office Box 385, Delair, NJ 08110
W. C. Morgan Kellogg Supply, Inc., 23813 Cholame Drive, Diamond Bar, CA 91766
R. L. Morris Fisons Limited-Fertilizer Division, Levington Research Station, Levington, Ipswich IPIO OLU, England
C. K. Mruk Hercules, Inc., 34 Pontiac Avenue, Providence, RI 02907
J. J. Murray* Research Agronomist, Agricultural Research Service, USDA, Plant Genetics and Germplasm Institute, Turfgrass Laboratory, Room 338, Building 001, Beltsville Agricultural Research Center-West, Beltsville, MD 20705
B. Muse Stark Campus, Kent State University, Canton, OH 44720
R. R. Muse Plant Pathology Department, Ohio Agricultural Research and Development Center, Wooster, OH 44691
R. W. Nelson Jacobsen Manufacturing Company, 1721 Packard Avenue, Racine, WI 53403
H. D. Niemczyk Department of Entomology, Ohio Agricultural Research and Development Center, Wooster, OH 44691
D. Nikolic 6209 Loran Street, St. Louis, MO 63109
F. J. Nudge* Department of Plant Sciences, University of California, Riverside, CA 91720
G. C. Nutter Box 5082, Lake City, FL 32055
E. H. Odell Post Office Box 1326, Chesapeake, VA 23320
R. C. O'Knefski Nassau County Extension Agent, 66 Scudders Lane, Glen Head, NY 11545
Wilhelm Opitz von Boberfeld* Institute for Agronomy, University of Bonn, Katzenburgweg 5, 53 Bonn, West Germany
G. Osburn Hercules, Inc., 910 Market Street, Wilmington, DE 19899
G. Otten Proctor and Gamble Company, Ivory dale Technical Center, Cincinnati, OH 45217
H. D. Palmertree* Mississippi Cooperative Extension Service, Box 5425, Mississippi State, MS 39762
D. Parsons 25232 Vermont Drive, Newhall, CA 91321
J. L. Paul* Associate Horticulturist, Department of Environmental Horticulture, University of California, Davis, CA 95616
K. T. Payne Department of Crop and Soil Science, Michigan State University, East Lansing, MI 48823
H. D. Perry* Research Associate, 339 Smyth Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
Martin Petersen* L. Dashnfeldt Ltd., Post Office Box 185, DK-5100 Odense, Denmark
R. J. Peterson E. F. Burlingham and Sons, Post Office Box 217, Forest Grove, OR 97116
R. Pietsch Wolf-Gerate GmbH, 524 Betzdorf/Sieg, Gregor-Wolf-StraBe, West Germany
R. H. Pluenneke* Associate Professor, Mississippi Agricultural and Forestry Experiment Station, Box 5248, Mississippi State, MS 39762
A. J. Powell, Jr.* Assistant Professor, Agronomy Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
J. B. Powell* Research Geneticist, Turfgrass Laboratory, Plant Genetics and Germplasm Institute, Agricultural Research Service, USDA, Room 333, B-001, BARC-West, Beltsville, MD 20705
H. Prun Landw. Versuchsstation der BASF, D6703, Limburgerhof, West Germany
A.M. Radko* National Research Director, U.S. Golf Association Green Section, Post Office Box 123 7, Highland Park, NJ 08904
K. Raininko Hankkija, Keskusosuusliike, Salomonkatu 1, 00100 Helsinki 10, Finland
R. Randell 165 Natural Resources, University of Illinois, Urbana, IL 61801
B. A. Rieger* Department of Horticultural Science, University of Guelph, Guelph, Ontario, Canada N1G 2W1
P. E. Rieke* Professor, Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI 48824
E. C. Roberts Plant and Soil Science Department, University of Rhode Island, Kingston, RI 02881
R. L. Robertson Department of Entomology, North Carolina State University, Raleigh, NC 27607
M. J. Robey* Athletic Department, Purdue University, West Lafayette, IN 47907
E. Roschel Wolf-Gerate GmbH, 524 Betzdorf/Sieg, Gregor-Wolf-StraBe, West Bermany
P. L. Sanders* Department of Plant Pathology, 111 Buckhout Lab, Penn State University, University Park, PA 16802
G. D. Sanks* Department of Horticulture, University of Illinois, Urbana, IL 61801
C. Schaepman Barenbrug Holland B. V., Postbus 4, Amhem, Netherlands
R. W. Schery* The Lawn Institute, Route 4, Kimberdale, Marysville, OH 43040
R. E. Schmidt* Associate Professor, Agronomy Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
R. M. Schmit* Soils and Crops Department, Cook College, Rutgers University, Post Office Box 231, New Brunswick, NJ 08903
E. W. Schweizer Post Office Box 360, CH-3601, Thun, Switzerland
R. L. Self* Plant Pathologist in Charge, Auburn University, Ornamental Horticulture Field Station, Post Office Box 8276, Mobile, AL 36608
J. P. Shildrick* Assistant Director, Sports Turf Research Institute, Bingley, Yorkshire, BD 16 1AU, England
J. F. Shoulders* Associate Professor, Agronomy Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
W. E. Sieveking Research Center, Maple Leaf Mills Ltd., RR 2, Georgetown, Ontario, Canada
J. A. Simmons O. M. Scott and Sons Company, Marysville, OH 43040
Werner Skirde* Justus Liebig-Universitiit, Schlossgasse 7, Brandplatz 1, Giessen 63, West Germany
C. R. Skogley Plant and Soil Science Department, University of Rhode Island, Kingston, RI 02881
W. A. Small Mallinckrodt Chemical Works, 3600 North Second Street, St. Louis, MO 63160
R. Smalley Box 451, Cobleskill, NY 12043
J. D. Smith* Plant Pathologist, Research Station, Research Branch, Agriculture Canada, University Campus, Saskatoon, Saskatchewan S7N OX2, Canada
L. M. Smith* University of Rhode Island (present address: O. M. Scott and Company, 2619 Greenleaf Drive, Orlando, FL 32810)
Vincent Snyder* Department of Agronomy, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
E. R. Steiniger Pine Valley Golf Club, Clementon, NJ 08021
W. C. Stienstra 6035 McKinley Street, Minneapolis, MN 55432
C. M. Switzer College of Agriculture, University of Guelph, Guelph, Ontario, Canada
D. K. Taylor* Research Scientist, Research Branch, Agriculture Canada, Post Office Box 1000, Agassiz, British Columbia VOM 1AO Canada
L. H. Taylor* Professor, Agronomy Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
W. R. Thompson, Jr.* Potash Institute of North America, 810 Howard Drive, Starkville, MS 39759
R. W. Toler* Professor, Department of Plant Sciences, Texas A&M University, College Station, TX 77843
J. Troll Plant and Soil Science Department, University of Massachusetts, Amherst, MA 01002
A. J. Turgeon* Assistant Professor, Department of Horticulture, 202 Ornamental Horticulture Building, University of Illinois, Urbana, IL 61801
J. P. van der Horst* Netherlands Sports Federation, van Karnebeeklaan 6, The Hague, Netherlands
J. M. Vargas Department of Botany and Plant Pathology, Michigan State University, East Lansing, MI 48823
W. Versteeg Heidemij Nederland N. V., Postbus 33, Arnhem, Netherlands
R. Vogel D-59 Siegen, Bruderweg 33, West Germany
H. Vos* Institute for Research on Varieties of Field Crops, Post Office Box 32, Wageningen, Netherlands
D. V. Waddington Department of Agronomy, Pennsylvania State University, University Park, PA 16802
R. C. Wakefield* Professor, Plant and Soil Science Department, College of Resource Development, University of Rhode Island, Kingston, RI 02881
G. E. Walker* Newport High School, Monmouthshire, Wales, United Kingdom
R. H. Walker* Agronomy Department, Mississippi State University (present address: 1129 Joel Drive, Albany, GA 31707)
C. Y. Ward* Professor, Mississippi Agricultural and Forestry Experiment Station, Post Office Box 5248, Mississippi State, MS 39762
C. G. Warren* Department of Plant Pathology and Pesticide Research Laboratory, The Pennsylvania State University, University Park, PA 16802
H. Watkins Agronomy Department, Agricultural Science Center North, Lexington, KY 40506
T. L. Watschke* Assistant Professor, Department of Agronomy, 20 Tyson Building, The Pennsylvania State University, University Park, PA 16802
D. J. Watson Hercules, Inc., Wilmington, DE 19899
J. R. Watson* Vice President, The Toro Company, 8111 Lyndale Avenue South, Bloomington, MN 55420
W. L. Watson Box 327, Virginia State College, Petersburg, VA 23803
R. W. Weaver* Assistant Professor, Texas Agricultural Experiment Station, Soil and Crop Sciences Department, Texas A&M University, College Station, TX 77843
D. J. Wehner 119 Tyson Hall, Pennsylvania State University, University Park, PA 16802
H. Weitz Box 10, Somerset, NJ 08873
R. Westfall RR 1, Marysville, OH 43040
D. B. White* Professor, Department of Horticultural Science, University of Minnesota, St. Paul, MN 55101
J. F. Wilkinson* Department of Crop and Soil Science, Michigan State University, East Lansing, MI 48824 (present address: Department of Agronomy, Ohio State University, 1827 Neil Avenue, Columbus, OH 43210)
H. H. Williams* Plant Physiologist, Los Angeles State and County Arboretum (present address: 1128 East 80th Street, Los Angeles, CA 90001)
C. W. Winstead* Mississippi State College (present address: Horticulture Department, Louisiana Tech University, Post Office Box 5136, Tech Station, Ruston, LA 71270)
G. M. Wood* Associate Professor, Plant and Soil Science Department, University of Vermont, Burlington, VT 05401
J. M. Woodruff* Assistant Professor, Virginia Polytechnic Institute and State University (present address: Cooperative Extension Service, University of Georgia, Post Office Box 1209, Tifton, GA 31794)
V. Worrel 2055 White Bear Avenue, St. Paul, MN 55109
F. J. Wray* Assistant Professor, Plant Science Department, Nova Scotia Agricultural College, Truro, Nova Scotia, Canada
V. B. Youngner* Professor, Department of Plant Sciences, University of California, Riverside, CA 91720
M. A. Zanko Mallinckrodt Chemical Works, International Division, 675 Brown Road, Hazelwood, MO 63042

 

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