Peanut Mottle Virus Epidemics in Lupines. J. W. Demski, Associate Professor, Georgia Experiment Station, Experiment 30212. H. D. Wells, Research Plant Pathologist, and J. D. Miller, Research Agronomist, USDA, ARS, Coastal Plain Experiment Station, Tifton 31793; and M. A. Khan, Visiting Postdoctorate Associate, Georgia Experiment Station, Experiment 30212. Plant Dis. 67:166-168. Accepted for publication 8 July 1982. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1983. DOI: 10.1094/PD-67-166.

Blue lupine (Lupinus angustifolius) and white lupine (L. albus) became infected with peanut mottle virus (PMV) when planted next to peanuts. In each of 2 yr, more than 80% of lupines were infected with PMV. Incidence of PMV was very low in lupines planted more than 100 m from a virus source. Height reduction and yield losses appeared greater in lupines than occur in PMV-infected peanuts and soybeans. The rate of seed transmission of PMV in white lupine was less than 1%. Infected lupines can provide a vegetative overwintering source of PMV for the next season’s peanut crop. Destroying peanuts before lupines are planted or planting lupines more than 100 m from peanuts may be an effective prevention of PMV epidemics in lupines.