Broad Bean

Vicia faba

1. Identification and origin

The faba bean (Vicia faba L.), belonging to the Fabaceae family, is a legume of Mediterranean and Southwest Asian origin. It was one of the first species domesticated in the region, later spreading throughout Europe, North Africa and Western Asia.

2. Economic importance

The faba bean is grown for human and animal consumption, standing out for its high protein content and its relevant role in crop rotation due to the biological fixation of nitrogen. It is of growing importance in sustainable agricultural systems and in the markets for dry and fresh legumes. Countries such as China, Ethiopia, the United Kingdom, France and Egypt are major producers.

3. Botanical characterisation

An annual, erect plant with a quadrangular and sparsely branched stem. The leaves are compound, paripinnate, with oval leaflets. The flowers are large, white with black spots, typical of the species. The pods are elongated, containing large, flattened seeds of variable colouring. The root system is deep and associated with nitrogen-fixing nodules.

4. Soil and climate requirements

It adapts well to cool temperate climates, tolerating low temperatures during vegetative development. It prefers deep, sandy-clay, fertile and well-drained soils. It is sensitive to prolonged waterlogging and to very acidic soils. It needs good water availability, especially during flowering and pod filling.

5. Main pests

• Black bean aphid (Aphis fabae): leaf curling, reduction of vigour and transmission of viruses.
• Broad bean weevil (Bruchus rufimanus): perforations and damage to seeds.
• Caterpillars (Noctuidae): leaf consumption and damage to young pods.
• Bean seed fly (Delia platura): attack on seedlings and germinated seeds.
• Root-knot nematodes (Meloidogyne spp.): root deformations and reduction of growth.

6. Main diseases

• Chocolate spot of faba bean (Botrytis fabae): brown spots on the leaves and severe defoliation.
• Grey mould (Botrytis cinerea): necroses on leaves, flowers and pods.
• Rust (Uromyces viciae‑fabae): brown pustules on the lower surface of the leaves.
• Downy mildew (Peronospora viciae): chlorotic spots and greyish sporulation.
• Viruses (BYMV, CMV): mosaics, deformations and reduction of vigour.

7. General crop management

This includes the choice of adapted and disease-tolerant varieties, sowing in well-drained soils, crop rotation with adequate intervals, weed control, regular monitoring of pests and diseases, and practices that favour nitrogen fixation. Irrigation should be balanced, avoiding waterlogging. Harvesting should be carried out at the stage appropriate to the destination (fresh or dry).

Bibliographic references

• EPPO Global Database. Vicia faba – pests and diseases.
• CABI Invasive Species Compendium. Vicia faba – datasheets.
• Stoddard, F. L., et al. (2010). Faba bean: Agronomy, breeding and production. Field Crops Research.
• Crépon, K., et al. (2010). Nutritional value and food uses of faba bean. Grain Legumes.
• Rubiales, D. (2010). Faba bean diseases. In: D. Rubiales (Ed.), Disease Resistance in Faba Bean (pp. 1–22). CIHEAM.