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A comparison of seed harvesting methods for perennial ryegrass treated with the growth retardant paclobutrazol
Author(s) -
HAMPTON J. G.,
HEBBLETHWAITE P. D.
Publication year - 1985
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1985.tb01764.x
Subject(s) - paclobutrazol , perennial plant , agronomy , water content , yield (engineering) , moisture , biology , horticulture , chemistry , materials science , geotechnical engineering , organic chemistry , metallurgy , engineering
Methods of harvesting seed of perennial ryegrass cv. S24 treated with the growth retardant paclobutrazol applied at spikelet initiation at a rate of 2.0 kg active ingredient ha −1 were examined in 1982. The greatest seed yield (2202 kg ha −1 ) was obtained from swathing the crop at 35% seed moisture content and combining 2 days later, but this was not significantly different from that obtained from swathing at 48% seed moisture content or double direct combining at 35% seed moisture content. Seed yields from a single direct combining at either 35% or 25% seed moisture content were significantly lower than those of other treatments.