Crop details
Elephant Foot Yam
Categories
Quick stats
| Family | Araceae |
|---|---|
| Typical harvest | 21.0 t/ha |
| Varieties | 2 |
| Pests & diseases | 3 |
| Seasons | 2 |
Crop profile
| Growth habit | perennial |
|---|---|
| Days to harvest | 240-360 |
| Main uses | Tuber crop |
| Pollination | insect |
| Origin / where it grows | South/Southeast Asia; tropics |
Weather, soil & spacing
| Best temperature | 24–32 °C |
|---|---|
| Rainfall | 1200–1800 mm/yr |
| Altitude | 0–1200 m |
| Best pH | 6–7 |
| Soil type | Deep, fertile loam |
| Row spacing | 100 cm |
| Plant spacing | 100 cm |
| Planting depth | 10 cm |
| Seed rate | 1200 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 240-360 days after planting, depending on care and variety.
Main use: Farmers mostly grow this crop for tuber crop.
Pollination: This crop is mainly pollinated by insect. Keeping flowers healthy and having insects like bees in the field helps improve fruit set and yields.
Where it grows: South/Southeast Asia; tropics It is grouped under: Roots & Tubers.
Best climate: This crop does well in warm areas where the temperature is usually between 24 and 32 degrees Celsius. It prefers places that receive around 1200 to 1800 millimetres of rain in a year. It can grow from near sea level up to about 1200 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 deep, fertile loam. Good drainage is important, so avoid waterlogged spots.
Plant spacing: Plant in rows about 100 centimetres apart, and leave about 100 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 10 centimetres deep so the roots sit firmly in the soil but are not buried too deep.
Seed or planting material: Use around 1200 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 | Basal | 0 | NPK 17-17-17 | 150 kg/ha | N: 34, P₂O₅: 34, K₂O: 34 | Basal fertilizer for Elephant Foot Yam. |
| 2 | Topdress | 60 | Urea | 120 kg/ha | N: 26, P₂O₅: —, K₂O: — | Support active Elephant Foot Yam vegetative growth. |
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 | 20 | kg/ha |
Field images (picha shambani)
| Name | Country | Maturity | Traits |
|---|---|---|---|
| Local Elephant Yam | KE | 300 | Large corms |
| Local Elephant Foot Yam | TZ | 260 | Large corm type for cooking and flour. |
| Stage | Product | Rate (kg/ha) | Notes |
|---|---|---|---|
| Basal | NPK 17-17-17 | 150 | |
| Planting | Well-rotted manure | 5000 | Improve soil structure before Elephant Foot Yam planting. |
| Vegetative growth | CAN | 100 | Split topdress for Elephant Foot Yam production. |
| Name | Type | Symptoms | Management |
|---|---|---|---|
| Tuber rot | disease | Rotting setts | Curing; drainage; seed treatment |
| Root maggots | pest | Tunneling and feeding damage on roots. | Rotate crops and maintain field sanitation. |
| Root cracking and rot | disease | Cracked or rotting roots under uneven moisture. | Maintain even moisture and use well-drained soils. |
| System | Typical | Min | Max | Notes |
|---|---|---|---|---|
| rainfed | 20 | 12 | 35 | |
| Managed fresh-market production | 22 | 15.4 | 33 | Typical marketable Elephant Foot Yam yield under irrigated or well-managed conditions. |
| Country | Region | Planting | Harvest |
|---|---|---|---|
| KE | Humid zones | Mar–Apr | Dec–Feb |
| KE | Highland Vegetable Zones | Mar-Apr or Oct-Nov | Year-round depending on irrigation |
| Country | Region | Suitability |
|---|---|---|
| KE | Highland Vegetable Zones | High |
| KE | Humid zones | Medium |