Abstract
Abstract Six lucerne cultivars were assessed for the Incidence of leaf spot on autumn growth in flood irrigation trials. Common leaf spot, caused by Pseudopeziza medicaginis, and the most prevalent disease, and cultivars were divided into 3 groups depending on their resistance to it. ‘Saranac’ and ‘WL318’ were the most tolerant, ‘Pioneer 521’ and ‘Wairau’ were moderately tolerant, but ‘AS 13R’ and ‘Washoe’ were highly susceptible. Yellow leaf blotch and Stemphylium leaf spot were also assessed, but these diseases were of minor significance.
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