Full TGIF Record # 73174
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Web URL(s):http://onlinelibrary.wiley.com/doi/10.1046/j.1365-2494.2001.00245.x/epdf
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Publication Type:
i
Refereed
Author(s):Binnie, R. C.; Mayne, C. S.; Laidlaw, A. S.
Author Affiliation:Binnie and Mayne: Agricultural Research Institute of Northern Ireland, Hillsborough; and Laidlaw: Applied Plant Science Division, Plant Testing Station, Belfast, United Kingdom
Title:The effects of rate and timing of application of fertilizer nitrogen in late summer on herbage mass and chemical composition of perennial ryegrass swards over the winter period in Northern Ireland
Source:Grass and Forage Science. Vol. 56, No. 1, March 2001, p. 46-56.
# of Pages:11
Publishing Information:Oxford, Blackwell Scientific Publications
Keywords:TIC Keywords: Fertilizers; Application rates; Application timing; Nitrogen; Summer; Specific leaf mass; Acid detergent fiber; Chemical composition; Lolium perenne
Abstract/Contents:"A small-plot experiment was carried out in Northern Ireland on a predominantly perennial ryegrass sward over the period July 1993 to March 1994 to investigate the effect of timing and rate of fertilizer nitrogen (N) application on herbage mass and its chemical composition over the winter period. Eighty treatment combinations, involving four N fertilizer application dates (28 July, 9 and 30 August, and 20 September 1993), four rates of N fertilizer (0, 30, 60 and 90 kg N ha-1) and five harvest dates (1 October, 1 November, 1 December 1993, 1 February and 1 March 1994), were replicated three times in a randomized block design experiment. N application increased herbage mass at each of the harvest dates, but in general there was a decrease in response to N with increasing rate of N and delay in time of application. Mean responses to N applications were 13路0, 11路5 and 9路5 kg-1 N at 30, 60 and 90 kg N ha-1 respectively. Delaying N application, which also reduced the length of the period of growth, reduced the mean response to N fertilizer from 14路3 to 7路4 kg DM kg-1 N for N applied on 28 July and 20 September respectively. Increasing rate of N application increased the N concentration and reduced the dry-matter (DM) content and water-soluble carbohydrate (WSC) concentration of the herbage but had little effect on the acid-detergent fibre (ADF) concentration. Delaying N application increased N concentration and reduced DM content of the herbage. The effect of date of N application on WSC concentration varied between harvest. A decrease in herbage mass occurred from November onwards which was associated with a decrease in the proportion of live leaf and stem material and an increase in the proportion of dead material in the sward. It is concluded that there is considerable potential to increase the herbage mass available for autumn/early winter grazing by applying up to 60 kg N ha-1 in early September."
Language:English
References:23
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Binnie, R. C., C. S. Mayne, and A. S. Laidlaw. 2001. The effects of rate and timing of application of fertilizer nitrogen in late summer on herbage mass and chemical composition of perennial ryegrass swards over the winter period in Northern Ireland. Grass Forage Sci. 56(1):p. 46-56.
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Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1046/j.1365-2494.2001.00245.x/epdf
    Last checked: 10/02/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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