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Knowledge/Crops/Tat Soi
Vegetables

Tat Soi

Brassica rapa var. rosularis

Tat Soi is a leafy green vegetable belonging to the Brassica family, characterized by its dark green, spoon-shaped leaves that form a rosette. It has a mild, sweet flavor and is often used in salads, stir-fries, and soups. It is valued for its nutritional content, being rich in vitamins A, C, and K, as well as minerals like calcium and iron.

Calculate System for Tat Soi
400.00–600.00mm
Water Need
120 days
Season
20.00–40.00cm
Root Depth
20,000 kg/ha
Yield
74,074
Plants/ha

Growth Stages

Season: Mar – Aug (120 days)

Initial
Kc 0.400
30 days
Development
Kc 0.700
40 days
Mid-Season
Kc 1.000
60 days
Late
Kc 0.800
30 days

Tat Soi is a cool-season crop that can be grown in both spring and fall. It is relatively easy to cultivate and can be direct-seeded or transplanted. Varieties include 'Winter Bloomsdale' and 'Tat Soi Green'.

Water Requirements

Season Total: 400.00–600.00 mm
Water Stress Sensitivity: High
Salt Tolerance: Low
Water Productivity: 12.000 kg/m³

Recommended Methods

Drip Irrigation90.00%

Soil Compatibility

Optimal pH range: 6.0 – 7.5

Sandy Loam
AWC100.00mm/m
Drainagegood
Drainage: Well-drained soils preferred
Organic Matter: 3.00%
Incorporating organic matter such as compost can improve soil structure and fertility. Regular soil testing is recommended.

Climate Compatibility

Temperature range: 10.0°C – 25.0°C

Temperate Continental
ETo: 1.00–6.00 mm/day
Temp: -20.0°C – 30.0°C
Frost: high
Frost Tolerance: Moderate frost tolerance
Heat Tolerance: Low heat tolerance
Tat Soi can tolerate light frost, making it suitable for early spring and late fall planting. Protect from extreme heat to prevent bolting.

Planting Layout

45.00cm
Row Spacing
30.00cm
Plant Spacing
74,074
Plants per ha

Nutrient Requirements (kg/ha)

Nitrogen (N)100 kg/ha
Phosphorus (P)50 kg/ha
Potassium (K)150 kg/ha
30
Calcium (Ca) kg/ha
20
Magnesium (Mg) kg/ha
15
Sulfur (S) kg/ha
Schedule: Apply nitrogen at planting and again at mid-season. Use balanced fertilizers to ensure micronutrient availability.
Organic Matter: 3-5% organic matter recommended

Yield Information

20,000
kg/ha
1.500
kg/plant
0.400
Harvest Index
Quality Factors: Leaf size, color, texture

Design Your Tat Soi Irrigation System

Use our free calculators to plan water requirements, spacing, and system costs for your Tat Soi field.

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Related Guides

Tat Soi: A Guide to Growing and Irrigating Economically

Tat Soi, also known as Rosette Bok Choy or Spoon Mustard, is a leafy green vegetable that belongs to the Brassica family. It is widely cultivated for its tender leaves and stems, which are commonly used in salads, stir-fries and soups. Tat Soi is a popular choice among growers due to its ability to thrive in various…

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