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Radish

Crop details

Radish

Raphanus sativus
Family: Brassicaceae

Categories

Quick stats

Family Brassicaceae
Typical harvest 13.5 t/ha
Varieties 2
Pests & diseases 3
Seasons 2

Crop profile

Growth habit annual
Days to harvest 35-70
Main uses Root vegetable
Pollination insect
Origin / where it grows Temperate; widely grown

Weather, soil & spacing

Best temperature 12–22 °C
Rainfall 350–600 mm/yr
Altitude 0–2600 m
Best pH 6.2–7
Soil type Loose, stone-free soils
Row spacing 30 cm
Plant spacing 8 cm
Planting depth 1.5 cm
Seed rate 8 kg/ha
Nursery days

Simple notes for farmers

About the crop: This crop is annual. You plant, grow and harvest it in one main season, then plant again. You can normally start harvesting about 35-70 days after planting, depending on care and variety.

Main use: Farmers mostly grow this crop for root vegetable.

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: Temperate; widely grown It is grouped under: Vegetables.

Best climate: This crop does well in warm areas where the temperature is usually between 12 and 22 degrees Celsius. It prefers places that receive around 350 to 600 millimetres of rain in a year. It can grow from near sea level up to about 2600 metres above sea level.

Soil: The crop grows best in slightly acidic to near neutral soils, with a pH of about 6.2 to 7. It does well in loose, stone-free soils. Good drainage is important, so avoid waterlogged spots.

Plant spacing: Plant in rows about 30 centimetres apart, and leave about 8 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 1.5 centimetres deep so the roots sit firmly in the soil but are not buried too deep.

Seed or planting material: Use around 8 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: Establish Radish in a fine weed-free seedbed and keep emergence moisture steady.
Transplanting: Direct seed or transplant depending on production system.
Irrigation: Maintain even soil moisture for steady Radish growth and quality.
Fertigation: Use split nitrogen and potassium for market-quality Radish.
Pest scouting: Scout Radish weekly for chewing pests, sap suckers, and foliar diseases.
Pruning: No pruning required unless sanitation or staking is needed.
Harvest: Harvest Radish when roots size up well before they become fibrous or pithy.
Postharvest: Cool and shade Radish promptly after harvest.

Nutrient schedule (mbolea kwa hatua)

# Stage DAP Product Rate Targets (kg/ha) Notes
1 Basal 0 NPK 12-24-12 60 kg/ha N: 34, P₂O₅: 34, K₂O: 34 Basal fertilizer for Radish.
2 Topdress 21 CAN 100 kg/ha N: 26, P₂O₅: —, K₂O: — Support active Radish vegetative growth.

Nutrient requirements

Nutrient Stage Amount Unit
N Basal 30 kg/ha
P₂O₅ Basal 25 kg/ha
K₂O Basal 30 kg/ha
N Topdress 25 kg/ha
K₂O Topdress 20 kg/ha

Field images (picha shambani)

Radish
Primary
Radish imported image
Radish imported image
Radish imported image
Radish imported image
Name Country Maturity Traits
White Icicle KE 45 Fast-growing
Cherry Belle KE 35 Small red bunching radish.
Stage Product Rate (kg/ha) Notes
Basal NPK 12-24-12 60
Planting Well-rotted manure 5000 Improve soil structure before Radish planting.
Vegetative growth CAN 100 Split topdress for Radish production.
Name Type Symptoms Management
Root maggot pest Tunnels in roots Crop covers; rotation
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
open-field 15 10 25
Managed fresh-market production 12 8.4 18 Typical marketable Radish yield under irrigated or well-managed conditions.
Country Region Planting Harvest
KE Highlands Feb–Apr Mar–Jun
KE Highland Vegetable Zones Mar-Apr or Oct-Nov Year-round depending on irrigation
Country Region Suitability
KE Highland Vegetable Zones High
KE Highlands High