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Arrowroot

Crop details

Arrowroot

Maranta arundinacea
Family: Marantaceae

Categories

Quick stats

Family Marantaceae
Typical harvest 15.0 t/ha
Varieties 1
Pests & diseases 3
Seasons 0

Crop profile

Growth habit perennial
Days to harvest 240-360
Main uses Starch root
Pollination insect
Origin / where it grows Tropics

Weather, soil & spacing

Best temperature 22–30 °C
Rainfall 1400–2200 mm/yr
Altitude 0–1600 m
Best pH 5.5–6.8
Soil type Deep loam; moist
Row spacing 100 cm
Plant spacing 60 cm
Planting depth 6 cm
Seed rate 1500 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 starch root.

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: Tropics It is grouped under: Roots & Tubers.

Best climate: This crop does well in warm areas where the temperature is usually between 22 and 30 degrees Celsius. It prefers places that receive around 1400 to 2200 millimetres of rain in a year. It can grow from near sea level up to about 1600 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 deep loam; moist. Good drainage is important, so avoid waterlogged spots.

Plant spacing: Plant in rows about 100 centimetres apart, and leave about 60 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 6 centimetres deep so the roots sit firmly in the soil but are not buried too deep.

Seed or planting material: Use around 1500 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: Plant healthy rhizome setts in well-prepared moist beds; maintain mulch to conserve moisture.
Transplanting: Not typically transplanted; use setts directly.
Irrigation: Requires consistent moisture; maintain evenly moist soil, avoid stagnation.
Fertigation: If under drip, provide small N/K feedings during rapid growth.
Pest scouting: Scout for weevils and leaf spots; ensure sanitation and rotation.
Pruning: Remove senescent leaves to reduce disease pressure.
Harvest: Harvest 8–12 months after planting when leaves begin to yellow; lift carefully to avoid breakage.
Postharvest: Cure briefly in shade; store cool and dry; process promptly for starch.

Nutrient schedule (mbolea kwa hatua)

# Stage DAP Product Rate Targets (kg/ha) Notes
1 Basal 0 NPK 12-24-12 150 kg/ha N: —, P₂O₅: —, K₂O: —
2 Topdress 60 CAN 26% N 120 kg/ha N: —, P₂O₅: —, K₂O: — Irrigate after application

Nutrient requirements

Nutrient Stage Amount Unit
N Basal 40 kg/ha
P₂O₅ Basal 30 kg/ha
K₂O Basal 60 kg/ha
N Topdress 40 kg/ha

Field images (picha shambani)

Arrowroot
Primary
Name Country Maturity Traits
Local Arrowroot KE 300 High starch
Stage Product Rate (kg/ha) Notes
Basal NPK 12-24-12 150
Topdress CAN 26% N 120 Split if soils are light
Name Type Symptoms Management
Weevils pest Clean seed pieces; sanitation
Leaf spots disease Improve airflow; avoid overhead irrigation; use protectants if needed
Root rots disease Avoid waterlogging; rotate; use healthy planting material
System Typical Min Max Notes
rainfed 15 8 25
No season calendars yet.
Country Region Suitability
KE Humid lowlands
KE Riverine/irrigated zones
KE Sub-humid zones