Full TGIF Record # 154606
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DOI:10.1111/j.1365-2494.2009.00692.x
Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2009.00692.x/full
    Last checked: 01/31/2014
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http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2009.00692.x/pdf
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Publication Type:
i
Refereed
Author(s):Lee, J. M.; Donaghy, D. J.; Sathish, P.; Roche, J. R.
Author Affiliation:Lee and Roche: Dairy NZ, Hamilton, New Zealand; Donaghy: University of Tasmania, Burnie, Tasmania, Australia; Sathish: Pastoral Genomics, ViaLactia Biosciences, Auckland, New Zealand
Title:Interaction between water-soluble carbohydrate reserves and defoliation severity on the regrowth of perennial ryegrass ( Lolium perenne L.)-dominant swards
Source:Grass and Forage Science. Vol. 64, No. 3, September 2009, p. 266-275.
# of Pages:10
Publishing Information:Oxford, Blackwell Scientific Publications
Related Web URL:http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2009.00692.x/abstract
    Last checked: 01/31/2014
    Notes: Abstract only
Keywords:TIC Keywords: Cultivar evaluation; Defoliation; Growth studies; Lolium perenne; Regrowth; Water soluble carbohydrates; Winter injury
Abstract/Contents:"A field-study was undertaken in Hamilton, New Zealand to determine if there was an interaction between water-soluble carbohydrate (WSC) reserve content and defoliation severity on the regrowth of perennial ryegrass-dominant swards during winter. Perennial ryegrass plants with either low or high WSC content were obtained by varying the defoliation frequency. At the third defoliation at the one-leaf stage and at the first defoliation at the three-leaf stage (harvest H1), swards were mown with a rotary lawnmower to residual stubble heights of 20, 40 or 60 mm. All swards were then allowed to regrow to the three-leaf stage before again defoliating to their treatment residual stubble heights (H2). Frequently defoliated plants contained proportionately between 0•37 and 0•48 less WSC in the stubble after defoliation, depending on the severity of defoliation. There was no interaction between WSC content and defoliation severity for herbage regrowth between harvests H1 and H2. Herbage regrowth was lower from swards containing low WSC plants compared with high WSC plants (2279 vs. 2007 kg DM ha-1). Furthermore, swards defoliated to 20 or 40 mm had greater herbage regrowth compared with those defoliated to 60 mm (2266, 2249 and 1914 kg DM ha-1 for swards defoliated to residual stubble heights of 20, 40 and 60 mm, respectively). Regrowth of perennial ryegrass was positively correlated with post-defoliation stubble WSC content within defoliation severity treatment, implying that WSC contributed to the defoliation frequency-derived difference in herbage yield. However, the effect of defoliation severity on herbage regrowth was not associated with post-defoliation stubble WSC content."
Language:English
References:46
Note:Figures
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lee, J. M., D. J. Donaghy, P. Sathish, and J. R. Roche. 2009. Interaction between water-soluble carbohydrate reserves and defoliation severity on the regrowth of perennial ryegrass ( Lolium perenne L.)-dominant swards. Grass Forage Sci. 64(3):p. 266-275.
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DOI: 10.1111/j.1365-2494.2009.00692.x
Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2009.00692.x/full
    Last checked: 01/31/2014
    Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2009.00692.x/pdf
    Last checked: 01/31/2014
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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