Grains and field crops
TABLE 3: Dry Matter Production Denmark 1976 Variety - kgs/ha* 184.108.40.206 (Bacchus x Daliak) - 5498 Mt. Barker - 5362 MBD 21.1 (Midland Bx Daliak) - 5166 Woogenellup - 5142 MBD 25.2 (Midland B x Daliak) - 4916 MBD 30.1 (Midland B x Daliak) - 4896 Daliak - 4654 Seaton Park - 4008 * Total of 5 cuts LSD 5% = 420 kg. Days to first flower 1976* Variety - Mt Barker. Woogenellup. 220.127.116.11. MBD 21.2. MBD 30.1. Dinninup. MBD 25.2. Seaton Park. Daliak. * Planting dates Denmark 25/3/76 Perth 3/5/76 A) 1967 Series Crossbreds. 1976 was a drought season and three new trials failed to set seed. This was unfortunate because more data is needed to support the pending release of Nungarin, the first early maturing clover to arise from this programme. A third year stand, however, yielded seed data (Table 1). 175.1 (Nungarin) had significantly (P < 05) more seed than Geraldton, Northam A or crossbred 239. However, when figures are compared with 1974 first year seed yields it can be seen that each cultivar set only enough seed in succeeding years to maintain its seed bank. TABLE 1 : Seed Yield 3rd Year Stand Merredin Research Station. 1976 Variety - Seed yield - kg/ha 175 (Nungarin) - 256 - (308)*. 239 - 214 - (224). Northam A - 228 ( 187). Geraldton - 167 - (161). LSD p < .05 = 56 * Seed yield 1974 (in brackets). The same trial yielded some information about likely survival after crops (Table 2). Half the plots had been prevented from seeding in 1975 by spraying out (with Reglone) plants which had germinated from the 1974 seed reserve. TABLE 2: Seed reserves after a season 7 s loss of seed production and its relation to hard seed data. B) Preliminary Seed Evaluation of Early Crossbreds (1969 series). These were sown at Merredin. C) Kabatiella Research (a) Advanced generation crossbreds Several Kabatiella resistant crossbreds have been assessed at Denmark. 18.104.22.168 again showed promise in dry matter production. Kabatiella was not severe in 1976, but the crossbred still outyielded the susceptible cultivar Seaton Park (see Table 3) at the time of the last cut Mr Barker was still flowering and the figure represents an underestimate.
Number of Pages
Francis, C M. (1976), 1976 Early crossbreds. Department of Agriculture and Food, Western Australia, Perth. Report.