Abstract
Microcosm and field studies were conducted to determine the importance of shoot infection to the population dynamics of Ditylenchus destructor associated with snap bean (cv. Amity). All parts of plants grown in microcosms, both above- and belowground, were infected with nematodes. After planting (1-7 wk), numbers of nematodes increased in soil, fibrous roots, and above- and belowground portions of the hypocotyl and decreased in cotyledons, epicotyls, and leaves. Population densities recovered outside roots below the soil line averaged 9.5 times greater than those recovered inside fibrous roots (.)
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