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Sword bean (Canavalia ensiformis)
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Sword bean (Canavalia ensiformis)

Canavalia ensiformis
Family: Fabaceae
Typical yield 5.7 t/ha
Varieties 1
Pest/Disease 5
Seasons 1

Profile

Growth habit
climber
Lifecycle (days)
120–180
Primary uses
Green manure; forage; pulse (processed)
Pollination
insect
Origin / distribution
Pantropical; adapted to warm humid/subhumid zones

Environment

Climate

Temp optimal
22–30 °C
Rain optimal
900–1500 mm/yr
Altitude
0–1600 m

Soil

pH optimal
5.5–6.8
Soil type
Light to medium soils; well-drained

Farmer Guide

Row spacing
100 cm
Plant spacing
50 cm
Depth
3 cm
Seed rate
25 kg/ha
Nursery days
Planting: Direct-seed at onset of rains; provide trellis or allow to sprawl as green manure.
Transplanting: Not transplanted.
Irrigation: Rainfed in humid zones; irrigate during dry spells to support flowering/pod set.
Fertigation: Minimal N (fixing legume); ensure P and K; add S/Ca if deficient.
Pest scouting: Scout for pod borers and beetles; maintain sanitation and timely picking.
Pruning/Training: Train vines on supports where seed yield is the goal.
Harvest: For green manure, incorporate at flowering; for grain, harvest when pods brown and seeds hard.
Postharvest: Dry seed to ≤12% moisture; store cool/dry; cook/process thoroughly before food use.

Nutrient Schedule

#StageDAPProductRateTargets (kg/ha)Notes
1 Basal 0 NPK 15-15-15 (light) 50 kg/ha N: —, P₂O₅: —, K₂O: — Or DAP+MOP equivalent; keep away from seed inoculant
2 Early pod set (opt.) 40 Sulfate of potash (SOP) 40 kg/ha N: —, P₂O₅: —, K₂O: 20 Skip if soil K is adequate

Nutrient Requirements

NutrientStageAmountUnit
N Basal 0 kg/ha
P₂O₅ Basal 20 kg/ha
K₂O Basal 20 kg/ha
N Topdress 0 kg/ha
P₂O₅ Topdress 0 kg/ha
K₂O Topdress 20 kg/ha

Images

Sword bean (Canavalia ensiformis)
Name Country Maturity Traits
Local Canavalia KE 150 Vigorous vine; dual purpose
Stage Product Rate (kg/ha) Notes
Basal NPK 15-15-15 50 Or banded P+K sources
Pod set Sulfate of potash (SOP) 40 Apply only if K is low
Name Type Symptoms Management
Pod borers pest Pod damage Frequent picking; sanitation
Pod borers (Helicoverpa/Maruca) pest Bored pods; seed damage Flower–pod scouting; threshold sprays; timely harvest
Leaf beetles pest Defoliation; shot-holes Early control if severe; conserve natural enemies
Aphids pest Leaf curl; honeydew/sooty mold Control ants; soft insecticides; encourage predators
Root rots (Rhizoctonia/Pythium) disease Damping-off; root lesions Well-drained fields; seed treatment; avoid overwatering
System Typical Min Max Notes
green manure 8 4 12 Biomass (DM)
green manure (biomass DM) 8 4 12 Dry matter biomass
rainfed seed 1 0.6 1.8 Clean seed under good management
Country Region Planting Harvest
KE Humid lowlands Mar–Apr Jul–Nov
Country Region Suitability
KE Humid lowlands High
TZ Coastal belt High
UG Lake Victoria basin Medium