Macrophomina vaccinii causes stem blight of blueberry. a Death of the blueberry (Vaccinium spp.) plants in the field b Symptoms of stem blight of blueberry in the field c Symptoms of Macrophomina vaccinii after three days inoculation d Symptoms of Macrophomina vaccinii after one-week inoculation e Symptoms of Macrophomina vaccinii after three weeks inoculation f Symptoms of blueberry twig of Macrophomina vaccinii after three weeks inoculation.