Abstract
A semiselective medium (PAB: potato agar amended with 50 μg a.i./ml of benomyl, 100 μg/ml of chlortetracycline HCl, and 200 μg/ml of streptomycin sulfate) was developed for detection in apple leaf litter of A. bombacina, an antagonist to Venturia inaequalis. The efficiency of PAB depended on inoculum level and varied between 14% and 81%, when expressed as recovery from inoculated, nonsterile apple leaves as related to recovery from inoculated, initially sterile leaves
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