Full TGIF Record # 4352
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Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.1983.tb01627.x/pdf
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Author(s):Hampton, J. G.; Clemence, T. G. A.; Hebblethwaite, P. D.
Author Affiliation:University of Nottingham School of Agriculture, Sutton Bonington, UK
Title:Response of amenity types and influence of a growth regulator
Article Series:Nitrogen studies in Lolium perenne grown for seed, part 4
Source:Grass and Forage Science. Vol. 38, No. 2, June 1983, p. 97-105.
# of Pages:9
Related Web URL:http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.1983.tb01627.x/abstract
    Last checked: 08/08/2012
    Notes: Abstract only
Keywords:TIC Keywords: Lolium perenne; Fertilizers; Nitrogen; Seed production; Growth regulators; Nutrition; Nitrogen fertilizers
Geographic Terms:UK
Abstract/Contents:"In field trials in 1979-81, perennial ryegrass cultivars Royal and Majestic (amenity) and Morenne (agricultural) produced maximum seed yields at levels of applied N ranging from 40 to 160 kg ha⁻¹. Available soil N levels were estimated at 55 kg ha⁻¹; hence maximum seed yields were obtained at total nitrogen levels of 95-135 kg ha⁻¹ in Royal, 95-215 kg ha⁻¹ in Morenne, and 175-215 kg ha⁻¹ in Majestic. Applied N at rates above 120 kg ha⁻¹ either reduced or did not significantly increase seed yield, decreased seed numbers per unit area and decreased spikelets per tiller and seeds per spikelet. The use of a growth regulator increased seed yields by preventing lodging, but did so irrespective of nitrogen application rate. It is suggested that failure to increase seed yield at high Nitrogen rates is a result not of poor pollination because of lodging, but seed abortion as a consequence of competition for assimilate supply by secondary vegetative tillers."
See Also:See also part 1 "Level of application" Journal of the British Grassland Society, 32(4) December 1977, p. 195-204, R=200485. R=200485

See also part 2 "Timing of nitrogen application" Journal of the British Grassland Society, 33(3) September 1978, p. 159-166, R=199203. R=199203

See also part 3 "The effect of nitrogen and water stress" Grass and Forage Science, 34(3) September 1979, p. 221-227, R=200486. R=200486
See Also:Other items relating to: PGRS
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hampton, J. G., T. G. A. Clemence, and P. D. Hebblethwaite. 1983. Response of amenity types and influence of a growth regulator. Grass Forage Sci. 38(2):p. 97-105.
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DOI: 10.1111/j.1365-2494.1983.tb01627.x
Web URL(s):
    Last checked: 08/08/2012
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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MSU catalog number: SB 197 .B7
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