Description:
Forty-nine collections of tick-trefoil (various species) were assembled from 8 states and 16 Major Land Resource Areas. Seed from each collection were planted in the greenhouse for preliminary observation of growth characteristics in 1989. In 1990 plants from 40 of the collections were placed in propagation beds for a 2-year evaluation of survival, vigor, seed weight, plant height and width, bloom period, disease resistance, foliage production, and flower abundance. Five accessions, including Grant Germplasm, were selected for further evaluation based on early and late season ranking summaries. Advanced evaluations were completed in 1992 on the five remaining accessions. The Grant collection and two other accessions were selected for increase due to their superior survival, emergence, vigor, and foliage.