+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Turf growth and performance evaluation based on turf biomass and tiller density



Turf growth and performance evaluation based on turf biomass and tiller density



Agronomy Journal 82(3): 505-511



Visual rating systems are often used for evaluating turfs because of the absence of biological criteria associated with growth and performance. The purpose of this paper is to examine whether describing turfs quantitatively in terms of their biomass and tiller density can contribute to our understanding of turf growth, and form the basis of an objective, quantitative system of turf assessment. Measurements of the aboveground biomass, and the corresponding tiller densities of turfs, were gathered mostly from published work. The data indicate that turfs, like many crowded populations of plants, are governed by a rule of population biology called the power, or thinning, rule. As applied to turfs, conformity to the power rule means that biomass is highest at the lowest tiller densities, with the consequence that very hard-wearing turfs may inevitably be coarse textured. Estimates of the upper limits to biomass at tiller densities commonly found in turfs of different texture, suggest that there is more potential for the improvement of coarse turfs than fine ones. For turf assessment, biomass (alone or divided by tiller density to estimate mean tiller mass), is a useful guide to wear resistance. A measure of the fineness of turf texture is proposed. The use of biomass density (biomass divided by turf height) as a predictor of golf ball roll and lie is discussed. When turfs are at full cover, one of the parameters of the power rule, the biomass intercept log c, which can be derived from single measurements of biomass and tiller density, is proposed as a measure of the ability of turfs to accumulate biomass. Log c has the advantage of being independent of tiller density and of differences in nonlimiting management resources.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 002267999

Download citation: RISBibTeXText

DOI: 10.2134/agronj1990.00021962008200030013x


Related references

Estimating turf biomass, tiller density, and species composition by coring. Agronomy Journal 83(5): 800-803, 1991

Nutritional studies on turf grasses. A. Effect of nitrogen treatments and vertical mowing on performance of putting green turf. B. Nutrition studies on centipedegrass turf. A.R. Fla agric. Exp. Stats. 57. 121-2, 1956

The response of Lolium perenne (perennial ryegrass) turf grown on sand and soil to fertilizer nitrogen. II. Above-ground biomass, tiller numbers and root biomass. Journal of the Sports Turf Research Institute 60: 19-26, 1984

Factors affecting the growth of turf grasses. A. Nutrition. B. Plantbed sterilization for turf. C. Nematode investigations on turf grasses. A.R. Fla agric. Exp. Stats, 58, 1957-58. 131-5, 1957

An investigation of the shoe-turf interface using different types of shoes on Poly-Turf and Astro-Turf: torque and release coefficients. Alabama Journal of Medical Sciences 20(4): 387-390, 1983

The response of renovated turf of Lolium perenne (perennial ryegrass) to fertilizer nitrogen. II. Above-ground biomass and tiller numbers. Journal of the Sports Turf Research Institute 61: 100-103, 1985

Sod strength turf tiller and root density of tall fescue cultivars under three mowing heights. Hortscience 21(3 SECT 2): 892, 1986

Turf quality and morphological comparisons of winter overseeding methodologies for a high-density dwarf Cynodon turf. International Turfgrass Society Research Journal 9: 934-940, 2001

Evaluation of turf established using 'liquid sod' as compared with establishment using seed and turf. Journal of Turfgrass Science 73: 73-83, 1997

Turf research: evaluation of seven tall fescue varieties for turf purposes. Research Report, Agricultural Experiment Station, Oklahoma State University (P695): 54, 1974

Turf research: evaluation of 13 Kentucky bluegrass varieties and seven blends for turf purposes in Oklahoma. Research Report, Agricultural Experiment Station, Oklahoma State University (P695): 51-52, 1974

Evaluation of experimental and labelled turf fungicides on Helminthosporium and Fusarium diseases in turf, 1979. Fungicide and nematicide tests results American Phytopathological Society 5(35): 159-160, 1980

Managing turf for maximum root growth: are you making your job more difficult by not getting to the roots of many turf management problems?. Turf grass trends: 1-9, 1996

Improvement of turf quality and reduction of sulphur dioxide damage to turf grasses by the use of growth retardants. Journal of the Korean Society for Horticultural Science 18(1): 109-115, 1977

Evaluation of turf varieties based on growth surveys. Journal of Equine Science 18(2): 68, 2007