Sclerospora graminicola is the causal agent of green ear disease in bajra. Phytophthora parasitica causes diseases like foot rot and blight in various plants. Sclerotinia causes white mold or stem rot. Thanatephorus cucumeris (anamorph: Rhizoctonia solani) causes damping-off and root rot. The Ishihara test is a specific diagnostic tool for identifying color vision deficiencies, particularly red-green color blindness.