Collar Rot: This soil-borne disease affects the stem's part in contact with the ground, leading to the formation of light-colored spots due to fungal infection.

Rust: Caused by the fungus Phakopsora pachyrhizi, this disease appears as needle-point-sized, muddy brown, and red spots on the leaves of the plants.

Myrothecium Leaf Spot: This disease, caused by the fungus Myrothecium roridum, typically occurs about a month after sowing. It creates brown spots on the leaves of the plants.

Bacterial Blight: This bacterial infection causes spots on leaves, stems, pods, and petioles, characterized by angular, water-soaked spots on the leaves.

Yellow Mosaic Virus: This viral disease causes the plant to turn yellow, often due to larval infestation within the stem. Consequently, the plant starts to dry up without developing pods.

Blight Disease: Affecting the pods and seeds, this disease leads to the formation of brown-yellow spots on the leaves, which eventually dry up and fall off.