Grains and field crops
Clover Scorch (Kabatiella caulivora) has continued as the most serious pasture problem in established pastures in high rainfall areas and considerable effort has again been devoted to screening for disease resistance. Genetic resistance in the variety Daliak has been confirmed and the resistance introduced into a range of later maturing parents. Several other varieties have demonstrated a valuable degree of field tolerance and the best of these will be seed increased in 1974 and 1975. Competition experiments showed the ability of the newer clovers Seaton Park, Midland B and 39313Y to compete suceessfully, with Yarloop, whilst Seaton Park in particular appears capable of replacing that cultivar in non waterlogged areas. In waterlogged areas, although no Kabatiella resistant variety has been found, several low formononetin .crossbreds have demonstrated winter growth equal to Yarloop, with greater total production in the case of some crossbreds, notably Y47, whose maturity is ideally suited to Yarloop growing areas in W.A. and other, States. The early maturing low oestrogen crossbreads compared favourably in seed production with the Geraldton cultivar at Merredin. Crossbred 175.1 significantly outyielded Geraldton whilst the other four crossbreds and Northam A did not differ significantly in seed yield during the favourable 1973 growing season.
Number of Pages
Francis, C M. (1973), 1973 Research report. Department of Primary Industries and Regional Development, Western Australia, Perth. Report.