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Lima bean

Crop details

Lima bean

Phaseolus lunatus
Family: Fabaceae

Quick stats

Family Fabaceae
Typical harvest 1.5 t/ha
Varieties 3
Pests & diseases 5
Seasons 3

Crop profile

Growth habit annual
Days to harvest 90-140
Main uses Pulse; fresh/dry
Pollination self
Origin / where it grows Americas; tropics/subtropics

Weather, soil & spacing

Best temperature 20–28 °C
Rainfall 700–1200 mm/yr
Altitude 0–1800 m
Best pH 6–7
Soil type Well-drained loam
Row spacing 60 cm
Plant spacing 30 cm
Planting depth 3 cm
Seed rate 40 kg/ha
Nursery days

Simple notes for farmers

About the crop: This crop is annual. You plant, grow and harvest it in one main season, then plant again. You can normally start harvesting about 90-140 days after planting, depending on care and variety.

Main use: Farmers mostly grow this crop for pulse; fresh/dry.

Pollination: This crop is mainly pollinated by self. Keeping flowers healthy and having insects like bees in the field helps improve fruit set and yields.

Where it grows: Americas; tropics/subtropics It is grouped under: Legumes & Pulses.

Best climate: This crop does well in warm areas where the temperature is usually between 20 and 28 degrees Celsius. It prefers places that receive around 700 to 1200 millimetres of rain in a year. It can grow from near sea level up to about 1800 metres above sea level.

Soil: The crop grows best in slightly acidic to near neutral soils, with a pH of about 6 to 7. It does well in well-drained loam. Good drainage is important, so avoid waterlogged spots.

Plant spacing: Plant in rows about 60 centimetres apart, and leave about 30 centimetres between plants in the row. This gives each plant enough space for roots and canopy to spread.

Planting depth: Dig planting holes or furrows about 3 centimetres deep so the roots sit firmly in the soil but are not buried too deep.

Seed or planting material: Use around 40 kilograms of seed or planting material per hectare. Spread or plant evenly so the field has a good stand without being overcrowded.

Farmer guide (mwongozo wa mkulima)

Planting: Sow after onset of rains in warm soil; inoculate with Rhizobium if available; stake climbing types.
Transplanting: Generally not transplanted.
Irrigation: Maintain moisture at flowering/pod fill; avoid prolonged wet soils.
Fertigation: Low N needed due to fixation; supply P and K; micronutrients as needed.
Pest scouting: Scout for bean fly, aphids, pod borers, anthracnose; rotate chemistries.
Pruning: Stake/twine for pole types to reduce disease and ease harvest.
Harvest: Pick green pods regularly or dry seeds at full maturity; avoid shattering.
Postharvest: Dry seeds to ≤12% moisture; store cool & dry; control bruchids.

Nutrient schedule (mbolea kwa hatua)

# Stage DAP Product Rate Targets (kg/ha) Notes
1 Basal 0 NPK 17-17-17 60 kg/ha N: —, P₂O₅: 20, K₂O: 20 If using DAP, reduce additional N later
2 Topdress (veg) 25 CAN 26% N (optional) 40 kg/ha N: 10, P₂O₅: —, K₂O: — Only if plants pale or poor nodulation

Nutrient requirements

Nutrient Stage Amount Unit
P₂O₅ Basal 25 kg/ha
K₂O Basal 20 kg/ha
N Topdress 10 kg/ha
K₂O Flowering 20 kg/ha

Field images (picha shambani)

Lima bean
Name Country Maturity Traits
Local Lima KE 110 Pole type
Local Lima (bush) KE 110 Bush type; uniform pods
Pole Lima KE 130 Climbing; extended harvest
Stage Product Rate (kg/ha) Notes
Basal NPK 17-17-17 60
Basal DAP 18-46-0 60 Band away from seed
Topdress (opt.) CAN 26% N 40 Use based on leaf color/soil tests
Name Type Symptoms Management
Bean fly pest Stem swelling Seed dressing; early planting
Aphids pest Leaf curl; honeydew/sooty mold Conserve beneficials; spot sprays; control ants
Pod borer pest Bored pods/seeds Timely picking; pheromone/light traps; selective insecticides
Anthracnose disease Dark lesions on pods/leaves Clean seed; rotation; resistant varieties
Angular leaf spot disease Angular lesions on leaves Sanitation; copper/protectants; airflow
System Typical Min Max Notes
rainfed 1.2 0.5 2
rainfed smallholder 1.2 0.5 2
irrigated/managed 2 1.2 3 Good fertility & pest control
Country Region Planting Harvest
KE Eastern Oct–Nov Jan–Mar
KE Western Mar–Apr Jun–Aug
UG Central Mar–Apr Jun–Jul
Country Region Suitability
KE Eastern Medium
KE Western High
UG Central High