Velvetbean, Mucuna pruriens, is a crop used for green manuring, pharmaceuticals, and food. The USDA, ARS, NPGS Plant Genetic Resources Conservation Unit conserves a collection of velvetbean from ecogeographic regions around the world. Tissue from 27 genotypes were evaluated to determine if they varied for reducing nematodes (Meloidogyne incognita and M. arenaria). Above ground tissue from each velvetbean genotype was mixed with infested (1000 eggs/liter) soil at 0 and 1% (w/w), stored for one week at room temperature, and then planted with Rutger's tomato which is highly susceptible to these nematodes. After eight weeks, tomato roots were examined and the roots with galls were rated. The 1% amendment rate affected plant height, root dry weight, stem dry weight, but not plant weight. Significant variation occurred among these 27 velvetbean genotypes for nematode reduction.