<i>Ralstonia solanacearum</i> Race 3 Biovar 2 Causes Tropical Losses and Temperate Anxieties

Fig. 9. Late symptoms of Southern wilt of geranium showing root blackening (photo courtesy of Margery Daughtrey, Cornell University, www.pdis.org).



Image from Plant Health Progress article:
Ralstonia solanacearum Race 3 Biovar 2 Causes Tropical Losses and Temperate Anxieties