Charcoal rot of yacon (Smallanthus sonchifolius (Poepp. et Endl.) H. Robinson [another nomenclature. Polymnia sonchifolia]), oca (Oxalis tuberosa Molina) and pearl lupin (Tarwi, Lupinus mutabilis Sweet) caused by Macrophomina phaseolina (Tassi) Goid  [1999]

Sato, T. (Shikoku National Agricultural Experiment Station, Zentsuji, Kagawa (Japan)); Tomioka, K.; Nakanishi, T.; Koganezawa, H.;