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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Nutter, G. C.;
Sumrell, B. B.;
White, R. W. Jr. |
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| Author Affiliation: | Florida Agr. Exp. Sta. |
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| Title: | The Double-Quadrat method of measuring lateral growth of turf grasses |
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| Section: | Crop science divisions: Turfgrass management
Other records with the "Crop science divisions: Turfgrass management" Section
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| Meeting Info.: | Atlanta, Georgia: November 18-22, 1957 |
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| Source: | 1957 Agronomy Abstracts. 1957, p. 78. |
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| Publishing Information: | [Milwaukee, Wisconsin]: [American Society of Agronomy] |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Growth measurements of turf grasses have been confined largely to clipping weight determinations. In research there is need for a quantitative method to evaluate turfgrass performance in the terms of lateral growth. The Double-Quadrat (D-Q) method was devised by the authors after recognizing that lateral growth involved two components, lateral extension and density. Some grasses produce rapidly-growing runners with poor leaf density. Although this growth habit is not desirable in turf production, an accurate evaluation of lateral vigor may be of considerable interest in plant breeding. On the other hand, other grasses which extend very slowly may develop full density as they extend. The D-Q method makes use of a quadrat divided into percentile areas. Double determinations are made for each plot. First, lateral extension is determined by recording the number of percentile areas in which any growth has extended. The second reading measures density by recording the number of percentile areas completely covered with turf. A comparison of these two determinations reveals the growth habit of the grass. Also, the two sets of readings may be duly weighted and combined into a single-valued growth index. The D-Q method has been used in turf research at the University of Florida for the past 4 years to classify breeding stock, evaluate propagation studies, and determine seasonal growth responses." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only
"Golden Anniversary Meetings" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Nutter, G. C., B. B. Sumrell, and R. W. Jr. White. 1957. The Double-Quadrat method of measuring lateral growth of turf grasses. Int. Ann. Meet. p. 78. |
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