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Bok Choy imported image

Crop details

Bok Choy

Brassica rapa subsp. chinensis
Family: Brassicaceae

Categories

Quick stats

Family Brassicaceae
Typical harvest 12.0 t/ha
Varieties 1
Pests & diseases 2
Seasons 1

Crop profile

Growth habit annual
Days to harvest 45
Main uses Tender leafy Asian vegetable for fresh and stir-fry markets.
Pollination insect
Origin / where it grows Expanding in East African peri-urban vegetable systems and supermarkets.

Weather, soil & spacing

Best temperature 14–24 °C
Rainfall 450–800 mm/yr
Altitude 800–2800 m
Best pH 6–7
Soil type Fertile well-drained loam rich in organic matter.
Row spacing 40 cm
Plant spacing 20 cm
Planting depth 1.5 cm
Seed rate 4 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 45 days after planting, depending on care and variety.

Main use: Farmers mostly grow this crop for tender leafy asian vegetable for fresh and stir-fry markets..

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: Expanding in East African peri-urban vegetable systems and supermarkets. It is grouped under: Vegetables.

Best climate: This crop does well in warm areas where the temperature is usually between 14 and 24 degrees Celsius. It prefers places that receive around 450 to 800 millimetres of rain in a year. It can grow from near sea level up to about 2800 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 fertile well-drained loam rich in organic matter.. Good drainage is important, so avoid waterlogged spots.

Plant spacing: Plant in rows about 40 centimetres apart, and leave about 20 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 4 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 Bok Choy 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 Bok Choy growth and quality.
Fertigation: Use split nitrogen and potassium for market-quality Bok Choy.
Pest scouting: Scout Bok Choy weekly for chewing pests, sap suckers, and foliar diseases.
Pruning: No pruning required unless sanitation or staking is needed.
Harvest: Harvest Bok Choy at market maturity for the intended use.
Postharvest: Cool and shade Bok Choy promptly after harvest.

Nutrient schedule (mbolea kwa hatua)

# Stage DAP Product Rate Targets (kg/ha) Notes
1 Basal 0 NPK 17-17-17 200 kg/ha N: 34, P₂O₅: 34, K₂O: 34 Basal fertilizer for Bok Choy.
2 Topdress 21 CAN 100 kg/ha N: 26, P₂O₅: —, K₂O: — Support active Bok Choy vegetative growth.

Nutrient requirements

Nutrient Stage Amount Unit
N Basal 35 kg/ha
P₂O₅ Basal 30 kg/ha
K₂O Basal 35 kg/ha
N Topdress 25 kg/ha
K₂O Topdress 20 kg/ha

Field images (picha shambani)

Bok Choy imported image
Bok Choy imported image
Primary
Bok Choy imported image
Bok Choy imported image
Bok Choy imported image
Bok Choy imported image
Name Country Maturity Traits
Shanghai Green KE 45 Fast-maturing leafy type with crisp stems.
Stage Product Rate (kg/ha) Notes
Planting Well-rotted manure 5000 Improve soil structure before Bok Choy planting.
Vegetative growth CAN 100 Split topdress for Bok Choy production.
Name Type Symptoms Management
Aphids pest Leaf curling and sticky honeydew. Scout frequently and use selective control when pressure builds.
Leaf spot complex disease Necrotic spotting and reduced leaf quality. Improve airflow, rotate crops, and avoid prolonged leaf wetness.
System Typical Min Max Notes
Managed fresh-market production 12 8.4 18 Typical marketable Bok Choy yield under irrigated or well-managed conditions.
Country Region Planting Harvest
KE Highland Vegetable Zones Mar-Apr or Oct-Nov Year-round depending on irrigation
Country Region Suitability
KE Highland Vegetable Zones High