– Rhizoctonia solani is a ubiquitous, soilborne fungal pathogen and an important limiting factor to global food production. This aggressive necrotroph exists as a species complex and causes serious disease on a diverse range of hosts, including row crops, ornamentals, vegetables, turfgrass and several species of woody plants. This ELISA test is a qualitative serological assay for the detection of Rhizoctonia solani (Rhiz).