Diseases of Black gram / Urd bean - Vigna mungo (L.) Hepper and Diseases of Green gram / Mungbean - Vigna radiata (L.) R. Wilczek

This chapter provides information on diseases of black gram and green gram, and their symptoms, pathogen characters, epidemiology, and management. The diseases covered are powdery mildew, anthracnose, leaf spot, rust, root rot and leaf blight, mungbean yellow mosaic disease, leaf crinkle disease, and leaf curl. Conidiophores arise vertically from the leaf surface, bearing conidia in short chains. Conidia are hyaline, thin walled, elliptical or barrel shaped or cylindrical and single celled. The conidiophores are hyaline and short and bear oblong or cylindrical, hyaline, thin walled, single celled conidia with oil globules. The secondary spread by air borne conidia produced on infected plant parts. The conidia are linear, hyaline, thin walled and 5-6 septate. The fungus survives on diseased plant debris and on seeds. The fungus also produces dark brown, globose ostiolated pycnidia on the host tissues.