Crop details
Napier Grass
Categories
Quick stats
| Family | Poaceae |
|---|---|
| Typical harvest | 57.5 t/ha |
| Varieties | 2 |
| Pests & diseases | 3 |
| Seasons | 1 |
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 | 80 kg/ha |
| 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 around 80 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)
Nutrient schedule (mbolea kwa hatua)
| # | Stage | DAP | Product | Rate | Targets (kg/ha) | Notes |
|---|---|---|---|---|---|---|
| 1 | Establishment | 0 | NPK 17-17-17 | 150 kg/ha | N: 18, P₂O₅: 46, K₂O: — | Starter fertilizer for Napier Grass establishment. |
| 2 | After first cut | 60 | Urea | 100 kg/ha | N: 26, P₂O₅: —, K₂O: — | Topdress Napier Grass before rain or irrigation. |
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)
| Name | Country | Maturity | Traits |
|---|---|---|---|
| Kakamega 1 | KE | 180 | High biomass; disease tolerant |
| Pakchong 1 | KE | 80 | High biomass forage with frequent cutting. |
| Stage | Product | Rate (kg/ha) | Notes |
|---|---|---|---|
| Planting | DAP | 100 | Basal phosphorus for Napier Grass establishment. |
| Topdress | CAN | 100 | Nitrogen support for Napier Grass vegetative growth. |
| Name | Type | Symptoms | Management |
|---|---|---|---|
| Napier stunt | disease | Stunting; yellowing | Rogue infected clumps; clean planting material |
| Aphids | pest | Sap sucking on leaves and grain heads. | Scout early, preserve beneficial insects, and control when thresholds are exceeded. |
| Leaf rust | disease | Rust pustules on leaves reducing grain fill. | Use tolerant varieties, rotation, and timely disease control. |
| System | Typical | Min | Max | Notes |
|---|---|---|---|---|
| cut-and-carry | 80 | 40 | 120 | Fresh biomass/year |
| Rainfed smallholder production | 35 | 21 | 59.5 | Typical grain yield under practical Napier Grass management. |
| Country | Region | Planting | Harvest |
|---|---|---|---|
| KE | Highland Grain Zones | Mar-Apr | Jul-Aug |
| Country | Region | Suitability |
|---|---|---|
| KE | Dairy belts | High |
| KE | Highland Grain Zones | Medium |