Observations on the effect of black root rot (Phomopsis sclerotioides) on the susceptibility of cucumber to powdery mildew (Sphaerotheca fuliginea)

Abstract

S U M M A R YPowdery mildew (Sphaerotheca fuliginea) infection of cucumber leaves was earlier and increased more rapidly on plants with black root rot (Phomopsis sclerotioides) than on plants with healthy root systems in the same glasshouse.