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Napier grass

Crop details

Napier grass

Cenchrus purpureus (syn. Pennisetum purpureum)
Family: Poaceae

Quick stats

Family Poaceae
Typical harvest 80.0 t/ha
Varieties 1
Pests & diseases 1
Seasons 0

Crop profile

Growth habit perennial
Days to harvest 120-365+
Main uses Forage (cut-and-carry)
Pollination wind
Origin / where it grows Africa; tropics

Weather, soil & spacing

Best temperature 20–30 °C
Rainfall 1000–2000 mm/yr
Altitude 0–2000 m
Best pH 5.5–6.8
Soil type Fertile loams; tolerates many soils
Row spacing 100 cm
Plant spacing 50 cm
Planting depth 5 cm
Seed rate kg/ha (check local recommendation)
Nursery days

Simple notes for farmers

About the crop: This crop is perennial, which means once you plant it, the same plant can keep producing for many years. You can normally start harvesting about 120-365+ days after planting, depending on care and variety.

Main use: Farmers mostly grow this crop for forage (cut-and-carry).

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

Where it grows: Africa; tropics It is grouped under: Forages & Fodder.

Best climate: This crop does well in warm areas where the temperature is usually between 20 and 30 degrees Celsius. It prefers places that receive around 1000 to 2000 millimetres of rain in a year. It can grow from near sea level up to about 2000 metres above sea level.

Soil: The crop grows best in slightly acidic to near neutral soils, with a pH of about 5.5 to 6.8. It does well in fertile loams; tolerates many soils. Good drainage is important, so avoid waterlogged spots.

Plant spacing: Plant in rows about 100 centimetres apart, and leave about 50 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 5 centimetres deep so the roots sit firmly in the soil but are not buried too deep.

Seed or planting material: Use good quality seed or healthy planting material. Follow local extension advice for the exact amount per hectare.

Farmer guide (mwongozo wa mkulima)

Planting: Plant canes/splits; harvest every 6–8 weeks at 1–1.5 m height.

Nutrient schedule (mbolea kwa hatua)

# Stage DAP Product Rate Targets (kg/ha) Notes
1 Establishment 0 NPK 17-17-17 150 kg/ha N: —, P₂O₅: —, K₂O: —
2 After first cut 60 Urea 100 kg/ha N: —, P₂O₅: —, K₂O: —

Nutrient requirements

Nutrient Stage Amount Unit
N Basal 60 kg/ha
P₂O₅ Basal 40 kg/ha
K₂O Basal 60 kg/ha
N Topdress 60 kg/ha
K₂O Topdress 40 kg/ha

Field images (picha shambani)

Napier grass
Name Country Maturity Traits
Kakamega 1 KE 180 High biomass; disease tolerant
No fertilizer recommendations yet.
Name Type Symptoms Management
Napier stunt disease Stunting; yellowing Rogue infected clumps; clean planting material
System Typical Min Max Notes
cut-and-carry 80 40 120 Fresh biomass/year
No season calendars yet.
Country Region Suitability
KE Dairy belts High