Abstract
Nine varieties of lucerne were grown at the Welsh Plant Breeding Station in broadcast plots, without a companion grass, and three cuts of each variety were taken each year for three years.None of the newer varieties significantly outyielded the control variety Du Puits, although Alfa and G.P.R.l. produced 6% and 4% more dry matter. Cardinal gave a similar yield to the control; Omega and G.P.R.2 produced considerably less. A new late variety AF1 yielded 8% less dry matter than Du Puits but was equal to it in yield of crude protein. Vernal and Provence were very markedly inferior to all other varieties.The average yields of the lucerne fraction were 5910, 11,850 and 10,160 Ib/acre in the first, second and third harvest years. Unsown grass contributed from one‐half to one ton per acre per annum, in inverse proportion to yield of lucerne; the contribution was greatest in the first cut, but was negligible in the last two cuts.Data were also collected on susceptibility to leaf spot (Pseudopeziza medicaginis) and on plant counts.
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