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Registration of Varieties and Strains of Grasses 1
Author(s) -
Hein M. A.
Publication year - 1958
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1958.00021962005000070015x
Subject(s) - standardization , division (mathematics) , citation , library science , mathematics , computer science , political science , arithmetic , law
Penncross creeping bentgrass (Agrostis palustris Huds.) is the first generation (Syn-O) seed only, produced by random crossing of 3 vegetatively propagated clonal strains selected by H. B. Musser, Pennsylvania Agr. Exp. Sta. The 3 parent strains of Penncross are identified under the numbers 10(37)4, 9(38)5, and 11(38)4. During a 5-year period this variety has consistently maintained significantly better-quality putting-green turf than other types of seeded bentgrasses in replicated turf plot tests at University Park, Pa. These tests included: Highland, Astoria, and Seaside bentgrasses, New Zealand creeping bentgrass, and Cascade, Rhode Island, and New Zealand Colonial bentgrasses. From turf quality records over the 5-year period the Penncross variety was significantly better in vigor and density, in tolerance to disease and rate of recovery after such attacks. It has a wider range of climatic adaptation and because of its vigor has shown outstanding ability to produce higher quality turf under adverse environmental conditions than other seeded bentgrasses. Penncross has been under practical tests in New Jersey, Minnesota, Missouri, and Georgia, which confirm results obtained in Pennsylvania. The variety is recommended only for putting greens or similar intensive turf purposes, but not for general lawns or athletic fields. Fields for commercial production of Penncross seed were first established in 1955. Certified seed is now being produced under standards developed and approved by the Pennsylvania Department of Agriculture and Pennsylvania Agricultural Experiment Station. This seed is produced from fields vegetatively planted with foundation or approved stocks of the strains and in the manner designated. Further information on Penncross creeping bentgrass has been published.