Cowpea (Black-eyed Pea)
Vigna unguiculata
About Cowpea (Black-eyed Pea)
Cowpea is the most important grain legume in sub-Saharan Africa and a crop uniquely suited to semi-arid conditions. It is extremely drought-tolerant, fixes nitrogen, and provides high-quality protein (25%) to communities where animal protein is scarce. Nigeria produces 60% of the world's cowpea. The entire plant is used: grain for human food, leaves as vegetable, and haulms (vines) as animal fodder. Cowpea matures in 60-80 days, faster than most other legumes, making it ideal for short growing seasons. It is a key component of cereal-legume intercropping systems that sustain African agriculture.
Growing Conditions
Full sun — short day plant
Very drought-tolerant — grows with 300-500 mm rainfall. Taproot accesses deep soil moisture.
Tolerates sandy, low-fertility soils. pH 5.5-7.5. Good drainage essential.
Optimal 25-35°C. Heat tolerant — one of few crops productive above 35°C.
Low to moderate. High humidity promotes Cercospora leaf spot and storage pests.
Warm season — 60-80 days (extra-early) to 100-120 days (late). Planted at onset of rainy season.
Step-by-Step Growing Tips
Plant at 75 × 20 cm spacing for sole crop, wider for intercropping
Minimal fertilizer needed — cowpea fixes its own nitrogen
Apply phosphorus (20-30 kg P2O5/ha) for vigorous nodulation and root growth
Spray for flower thrips (Megalurothrips sjostedti) at flowering — critical for pod set
Harvest early-maturing pods promptly to encourage continued production
Store dry grain in airtight containers with neem leaves or hermetic bags (PICS bags) to prevent bruchid damage
Disease Risks to Watch
All diseases →Companion Planting
✅ Good Companions
Growing Zones
Frequently Asked Questions
When is the best time to plant Cowpea (Black-eyed Pea)?
Warm season — 60-80 days (extra-early) to 100-120 days (late). Planted at onset of rainy season.
What soil does Cowpea (Black-eyed Pea) need?
Tolerates sandy, low-fertility soils. pH 5.5-7.5. Good drainage essential.
How much water does Cowpea (Black-eyed Pea) need?
Very drought-tolerant — grows with 300-500 mm rainfall. Taproot accesses deep soil moisture.
What are the most common diseases affecting Cowpea (Black-eyed Pea)?
The most common diseases are: cowpea mosaic. Monitor regularly and practice crop rotation.
What plants grow well with Cowpea (Black-eyed Pea)?
Good companions include: millet, sorghum, maize. Avoid planting near no specific plants.
Related Crops — Fabaceae
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