Abstract
The most common microfauna on field grown gladiolus in Florida included 3 species of mites, Lasioseius subterraneous Chant, Rhizoglyphus robini (Claparede), and Histiostoma feroniarum (Du four), an enchytraeid worm, and nematodes. These organisms appeared to be predators, saprophytes, or scavengers and fed on diseased and decayed plant tissue. Populations developed apparently in response to either disease increase or to precipitation. Disease symptoms increased with increased precipitation. Infestations appeared from sources outside the soil since attack was initiated from above ground in the neck region of the host before proceeding to the corm. Corms grown in a greenhouse in sterile soil became infested with the same species as field grown plants.
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