VIEW ARTICLE

Factors Affecting Stromatinia Root Rot of Gladiolus. M. K. Beute, Assistant Professor of Plant Pathology, North Carolina State University, Raleigh 27607; Phytopathology 61:1329-1331. Accepted for publication 2 June 1971. DOI: 10.1094/Phyto-61-1329.

Soil temperature at, or exceeding, 28 C inhibited development of Stromatinia root rot on gladiolus. Root rot became increasingly severe as soil temperature was decreased to 24, 20, and 16 C. Soil moisture and inoculum concentration, within the range and temperatures studied, act independently but are additive in their effects on disease development. Infected gladioli grew vigorously when soil temperature was increased to 28 C. Several cultivars show moderate resistance to this disease.