A comparison of seed harvesting methods for perennial ryegrass treated with the growth retardant paclobutrazol |
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Authors: | J. G. HAMPTON P. D. HEBBLETHWAITE |
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Affiliation: | University of Nottingham School of Agriculture, Sutton Bonington, UK |
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Abstract: | 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. |
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