EFFECT OF SEED TREATMENTS ON STAND ESTABLISHMENT, ROOT NECROSIS, AND YIELD OF LUPINUS-ALBUS

Treatment of seed of white lupine (Lupinus albus) with maneb, captan, thiram, metalaxyl, carboxin, PCNB + ethazol, streptomycin sulfate, or chitosan was evaluated for effect on stand establishment, seedling roo t discoloration and necrosis, and yield. Seed treatments did not consi stently improve stand establishment or affect the number of roots with lesions, constrictions, tip necrosis, or discoloration. Fusarium spp. were isolated more frequently than Rhizoctonia solani AG-4, Pythium s pp., Pleiochaeta setosa, or Ascochyta sp., with F. solani being isolat ed most often. Seed treatment did not consistently result in an increa se in yield.