Southernpea Response to Glyphosate Desiccation1

Seed weight, germination, seedling emergence, and yields were examined following desiccation of southernpea [ Vigna unguiculata (L.) Walp cv. Mississippi Purple] plants with glyphosate [N-(phosphonomethyl)glycine]. Dry seed weight was not reduced by the desiccation process; however, seed quality of those treated at immature stages was reduced. Germination, seedling emergence, and yield from seed desiccated at immature stages were significantly less than from seeds desiccated at more mature stages of development. No differences were apparent between desiccation at mature stages and the control.