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Tamarillo (tree tomato)

Crop details

Tamarillo (tree tomato)

Solanum betaceum
Family: Solanaceae

Categories

Quick stats

Family Solanaceae
Typical harvest 18.3 t/ha
Varieties 3
Pests & diseases 9
Seasons 4

Crop profile

Growth habit perennial
Days to harvest 300-540
Main uses Fruit (fresh/juice)
Pollination insect
Origin / where it grows Andean highlands

Weather, soil & spacing

Best temperature 12–20 °C
Rainfall 900–1400 mm/yr
Altitude 1500–2800 m
Best pH 5.8–6.5
Soil type Fertile, well-drained loam
Row spacing 300 cm
Plant spacing 250 cm
Planting depth 40 cm
Seed rate kg/ha (check local recommendation)
Nursery days 90

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 300-540 days after planting, depending on care and variety.

Main use: Farmers mostly grow this crop for fruit (fresh/juice).

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: Andean highlands It is grouped under: Fruits & Nuts.

Best climate: This crop does well in warm areas where the temperature is usually between 12 and 20 degrees Celsius. It prefers places that receive around 900 to 1400 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 5.8 to 6.5. It does well in fertile, well-drained loam. Good drainage is important, so avoid waterlogged spots.

Plant spacing: Plant in rows about 300 centimetres apart, and leave about 250 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 40 centimetres deep so the roots sit firmly in the soil but are not buried too deep.

Seed or planting material: Use good quality seed or healthy planting material. Follow local extension advice for the exact amount per hectare.

Nursery period: If you raise seedlings in a nursery, keep them there for about 90 days before transplanting to the main field, when they are strong and healthy.

Farmer guide (mwongozo wa mkulima)

Planting: Plant with onset of rains or irrigate. Use healthy seedlings; add compost and starter P; provide windbreaks/stakes in exposed sites.
Transplanting: Mulch basins; protect young stems; avoid root disturbance.
Irrigation: Keep evenly moist, esp. flowering to fruit fill; avoid drought/heat spikes to reduce fruit drop.
Fertigation: Split N in light doses; ensure K and Ca for fruit quality; adjust using soil/leaf tests.
Pest scouting: Scout for aphids, whiteflies, mites, fruit flies, powdery mildew, and bacterial wilt; prune to improve airflow and sanitation.
Pruning: Train to 1–3 leaders; remove water shoots; tip-prune to balance vegetative and reproductive growth.
Harvest: Pick when fully colored (red/orange/yellow) and firm; handle carefully to avoid stem-end damage.
Postharvest: Shade-cool promptly; store 6–10 °C at high RH; 2–4 weeks depending on cultivar and handling.

Nutrient schedule (mbolea kwa hatua)

# Stage DAP Product Rate Targets (kg/ha) Notes
1 Basal 0 NPK 12-24-12 120 kg/ha N: —, P₂O₅: 10, K₂O: — Mix into backfill; keep away from stem
2 Topdress 90 CAN 26% N 100 kg/ha N: 10, P₂O₅: —, K₂O: — Apply in ring under canopy; water in
3 Pre-bloom balanced feed 270 NPK 17-17-17 200 g/plant N: 10, P₂O₅: 10, K₂O: 10 Light dose before flowering
4 Fruit fill K boost 330 Sulfate of potash (SOP) 200 g/plant N: —, P₂O₅: —, K₂O: 15 Prefer SOP for fruit quality
5 Micronutrient foliar (opt.) 300 Ca/B/Zn foliar (as label) 0 — N: —, P₂O₅: —, K₂O: — Apply in cool hours to support set/skin

Nutrient requirements

Nutrient Stage Amount Unit
N Basal 50 kg/ha
P₂O₅ Basal 30 kg/ha
K₂O Basal 60 kg/ha
N Topdress 40 kg/ha
N Establishment 20 kg/ha
P₂O₅ Establishment 20 kg/ha
K₂O Establishment 20 kg/ha
N Vegetative 40 kg/ha
K₂O Vegetative 30 kg/ha
N Flower_set 15 kg/ha
P₂O₅ Flower_set 20 kg/ha
K₂O Flower_set 30 kg/ha
N Fruit_fill 10 kg/ha
K₂O Fruit_fill 40 kg/ha
N Maintenance 30 kg/ha
P₂O₅ Maintenance 10 kg/ha
K₂O Maintenance 30 kg/ha

Field images (picha shambani)

Tamarillo (tree tomato)
Name Country Maturity Traits
Red Tamarillo KE 420 Juice color; market preferred
Red tamarillo (local) KE 360 Deep red fruit; good processing
Golden/yellow selection UG 360 Yellow fruit; mild flavor
Stage Product Rate (kg/ha) Notes
Basal Compost (well-decomposed) 4000 Mulch rings/basins
Vegetative CAN 26% N 70 Split 2–3× per year on young plants
Fruit fill Sulfate of potash (SOP) 60 Boost K for fruit quality
Name Type Symptoms Management
Late blight disease Leaf/stem blight Protectants; airflow
Aphids pest Leaf curl; honeydew; sooty mold; virus risk Conserve predators; control ants; selective insecticides if needed
Whiteflies pest Leaf yellowing; honeydew; virus vector Yellow traps; natural enemies; targeted controls
Red spider mites pest Stippling/bronzing in dry spells Maintain humidity; miticides if severe
Fruit flies (Tephritidae) pest Stings; larval tunnels; fruit drop Field sanitation; baiting; fruit bagging; timely harvest
Powdery mildew disease White powder on leaves/shoots Open canopy; resistant selections; fungicides if persistent
Bacterial wilt (Ralstonia) disease Sudden wilting; brown vascular tissue Avoid infested fields; rotate; hygiene; grafting on tolerant rootstocks where used
Anthracnose/fruit rots disease Sunken lesions; postharvest decay Pruning for airflow; sanitation; careful handling; protectants in wet weather
Root-knot nematodes pest Root galls; stunting Organic matter; solarization/cover crops; tolerant rootstocks if available
System Typical Min Max Notes
highland orchard 15 8 25
smallholder rainfed 15 8 25 10–25 kg/tree typical under moderate management
irrigated/intensive 25 15 40 Good cultivars, pruning, and nutrition
Country Region Planting Harvest
KE Highlands Mar–May / Oct–Nov Multiple flushes/year
KE Highlands (long rains) Mar–Apr Oct–Feb
KE Highlands (short rains) Oct–Nov May–Sep
UG Southwest highlands Mar–Apr Oct–Feb
Country Region Suitability
KE Frost-prone uplands Low
KE Highlands High
KE Highlands & cool mid-altitudes High
KE Hot lowlands (>28 °C mean) Low
TZ Northern highlands High
UG Southwest highlands High