Use of the mushroom tissue block rapid pitting test to detect brown blotch pathogens.
Isolates of an Arthrobacter species known to produce a positive host pathogenicity test were evaluated by the mushroom tissue block rapid pitting test. All 11 isolates of the Arthrobacter species yielded a positive test response. The time required for a positive test was the same for Pseudomonas tolaasi and the Arthrobacter species.
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Botany Department, University of Maine, Orono, Maine 04469.