Full TGIF Record # 18012
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Web URL(s):https://listings.lib.msu.edu/iowat/1989.pdf#page=24
    Last checked: 01/10/2017
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Publication Type:
i
Report
Author(s):Christians, N. E.; Burt, M. G.
Title:Growth and morphological characterization study of low- and high-maintenance Kentucky Bluegrass cultivars
Source:1989 Iowa Turfgrass Research Report. July 1989, p. 20-21.
Publishing Information:Ames, Iowa: Iowa State University
# of Pages:2
Keywords:TIC Keywords: Poa pratensis; Cultivar evaluation; Morphology; Growth analysis; Root growth; Roots; Shoots; Root-shoot ratio; Low maintenance; Fertilization rates; Nitrogen; Quality evaluation; Moisture
Abstract/Contents:Study to determine if Kentucky Bluegrass (Poa pratensis L.) cultivars defined as low- (K3-162, kenblue, vantage, South Dakota common, S-21) and high-maintenance (Bonnieblue, A20, 1-13, Lovegreen, Columbia) differ in root and shoot growth and morphiligical characteristics. Cultivars were observed in the field, greenhouse and laboratory. Field data included turf quality ratings based on turf color and present live green tissue and clipping yields. Greenhouse studies used a clear polyethylene tube in PVC pipe system to assess the effect of low- and high- nitrogen fertilizer level on the root and shoot growth charachteristics of low and high-maintenance cultivars. Laboratory studies measured stromatal density count on abaxial leaf blade surface. Results showed that low-maintenance cultivars rooted to greater depths, yielded greater clipping weights, had fewer stomata on their aboaxial leaf blade surface, had low shoot to root ratio and had low shoot moisture content. Relative differences between low and high maintenance cultivars did not change when grown under the two N levels. Authors concluded low-maintenance root characteristices observed are known drought tolerance mechanisms. These adaptations may best explain the reliable performance of these cultivars under low fertility, nonirrigated management. Unfortunalely, the low-maintenance cultivars possess many undesirable shoot growth and morphological characteristics. The identification of characteristics common to the low-maintenance cultivars that have no effect on aesthetics, such as the rooting characteristics and low shoot to root ratios, may be beneficial for the selection and development of improved Kentucky bluegrass cultivars, and also for the identification of existing improved Kentucky bluegrass cultivars more tolerant to wide range of management practices and environmental conditions.
Language:English
References:0
See Also:See also related thesis, Growth and Morphological Characteristics of Low- and High-Maintenance Kentucky Bluegrass (Poa pratensis L.) Cultivars, 1989, R=110580. R=110580
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Christians, N. E., and M. G. Burt. 1989. Growth and morphological characterization study of low- and high-maintenance Kentucky Bluegrass cultivars. Iowa Turfgrass Res. Rep. p. 20-21.
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https://listings.lib.msu.edu/iowat/1989.pdf#page=24
    Last checked: 01/10/2017
    Requires: PDF Reader
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MSU catalog number: SB 433 .A1 I55
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