
%0 Journal Article
%A Irwin, JAG 
%T Reaction of lucerne cultivars to <I>Phytophthora megasperma</I>, the cause of a root rot in Queensland
%J Australian Journal of Experimental Agriculture
%D 1974/08/01
%V 14
%N 69
%P 561-565
%K 
%R https://doi.org/10.1071/EA9740561
%U https://www.publish.csiro.au/paper/EA9740561 
%X The causal organism of Phytophthora root rot of lucerne (Medicago sativa) in Queensland was identified as Phytophthora megasperma var. sojae and a brief description of the organism is included. The results of disease surveys show that Phytophthora root rot is widespread and causes serious losses in lucerne in south eastern Queensland. A collection of lucerne cultivars and strains was screened for resistance to P. megasperma var. sojae both in controlled environment chambers and in a naturally infested field site. The cultivar Lahontan and the experimental strains ESI, BDSI, ECRSI and Combined showed high levels of resistance in both situations. 
