What is wrong with my Lablab plant?

Are there any holes in the pods?

Are the plants yellow and stunted, roots have swollen galls?

Are there dead plants scattered around the field, plants are stunted with small leaves and stems?

Are there any yellow and wilting leaves, brown streaks appear on a lower surface of leaves, the growth is stunted?

Are the leaves curled and yellow?

Pod borers will make an entry hole in the pod and then proceed to eat the seeds inside the pod. Borers are grub-like caterpillars that turn into tiny butterflies. Control them with Bacillus thuringiensis (BTK). Bag and destroy infested pods. Encourage natural enemies such as Trichogramma wasps.

Yellow, stunted plants and roots that have swollen galls indicate root-knot nematodes. Other symptoms are plants wilting during bright, hot days. Prevent root-knot nematodes by applying chitin or introducing parasitic nematodes to the soil before planting. Solarizing the soil also helps in preventing root-knot nematodes.

Bacterial wilt causes these symptoms. It can be diagnosed by plants that are wilting during the day and recover at night. This disease occurs wherever alfalfa is grown, and it is one of the most important diseases in the US. Resistant cultivars are the only method of management.

Fusarium wilt is a fungal disease that causes these symptoms. High soil temperatures favor the disease emergence. Use only disease-free seeds. Treat seeds with hot water to kill fungi before planting. Destroy affected plants at the first sign of fusarium. Rotate crops to non-susceptible species.

Distorted, curled leaves are caused by aphids. These insects cluster under leaves and on growing tips where they feed on plant sap. You can control them by washing them off the plant with water spray. Insecticidal soap should be used with severe infestations.

Yellow leaves that wilt and die usually indicate Root rot. Several pathogens can be the cause of root rots. Poorly drained, overly wet soil promotes rot so choose well-drained sites and add organic matter to improve drainage. Remove and destroy infected plants.