Quick stats
| Family | Rutaceae |
|---|---|
| Typical harvest | 17.3 t/ha |
| Varieties | 3 |
| Pests & diseases | 9 |
| Seasons | 4 |
Crop profile
| Growth habit | perennial |
|---|---|
| Days to harvest | 365+ |
| Main uses | Citrus fruit |
| Pollination | insect |
| Origin / where it grows | Mediterranean/Asia; tropics/subtropics |
Weather, soil & spacing
| Best temperature | 18–28 °C |
|---|---|
| Rainfall | 800–1200 mm/yr |
| Altitude | 0–2000 m |
| Best pH | 6–7 |
| Soil type | Well-drained loam/sandy loam |
| Row spacing | 600 cm |
| Plant spacing | 600 cm |
| Planting depth | 60 cm |
| Seed rate | kg/ha (check local recommendation) |
| Nursery days | 270 |
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 365+ days after planting, depending on care and variety.
Main use: Farmers mostly grow this crop for citrus fruit.
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: Mediterranean/Asia; tropics/subtropics It is grouped under: Fruits & Nuts.
Best climate: This crop does well in warm areas where the temperature is usually between 18 and 28 degrees Celsius. It prefers places that receive around 800 to 1200 millimetres of rain in a year. It can grow from near sea level up to about 2000 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 well-drained loam/sandy loam. Good drainage is important, so avoid waterlogged spots.
Plant spacing: Plant in rows about 600 centimetres apart, and leave about 600 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 60 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 270 days before transplanting to the main field, when they are strong and healthy.
Farmer guide (mwongozo wa mkulima)
Nutrient schedule (mbolea kwa hatua)
| # | Stage | DAP | Product | Rate | Targets (kg/ha) | Notes |
|---|---|---|---|---|---|---|
| 1 | Early growth | 0 | NPK 17-17-17 | 180 kg/ha | N: 20, P₂O₅: 20, K₂O: 20 | Mix compost in pit; keep fertilizer away from trunk |
| 2 | Fruit set | 365 | MOP (K2O 60%) | 120 kg/ha | N: 16, P₂O₅: —, K₂O: — | Ring apply on moist soil; mulch afterwards |
| 3 | Flowering / set | 180 | MOP (KCl) + MAP (12-61-0) | 60 kg/ha (K) + 25 kg/ha (P) | N: —, P₂O₅: 15, K₂O: 40 | Avoid heavy N near bloom |
| 4 | Fruit fill (fertigation opt.) | 240 | KNO₃ / CaNO₃ (weekly small doses) | 8 kg/ha/week | N: —, P₂O₅: —, K₂O: 40 | 4–6 weeks micro-doses improve size/peel |
Nutrient requirements
| Nutrient | Stage | Amount | Unit |
|---|---|---|---|
| N | Basal | 60 | kg/ha |
| P₂O₅ | Basal | 40 | kg/ha |
| K₂O | Basal | 80 | kg/ha |
| N | Topdress | 60 | kg/ha |
| K₂O | Topdress | 60 | kg/ha |
| N | Vegetative | 40 | kg/ha |
| K₂O | Vegetative | 40 | kg/ha |
| N | Flower_set | 20 | kg/ha |
| K₂O | Flower_set | 30 | 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)
| Name | Country | Maturity | Traits |
|---|---|---|---|
| Eureka | KE | 720 | Juice; year-round flushes |
| Lisbon | KE | Vigorous; productive under warm conditions | |
| Ponderosa (home garden) | UG | Large fruits; coarse peel |
| Stage | Product | Rate (kg/ha) | Notes |
|---|---|---|---|
| Basal | Compost/manure (well-decomposed) | 5000 | Band in basin; keep 20–30 cm off trunk |
| Vegetative | CAN 26% N | 60 | Split into 2–3 small doses |
| Flower/Set | MOP (KCl) | 60 | Boost K before/after bloom |
| Fruit fill | Calcium nitrate (optional) | 40 | Improve peel/firmness |
| Name | Type | Symptoms | Management |
|---|---|---|---|
| Citrus canker | disease | Leaf/fruit lesions | Sanitation; copper sprays |
| Citrus leaf miner | pest | Leaf mines; distorted flush | Avoid excessive N; prune infested flush; selective insecticides if severe |
| Aphids & psyllids | pest | Curling leaves; honeydew/sooty mold; HLB risk | Control ants; use oils/soaps/selective actives; remove symptomatic shoots |
| Scales & mealybugs | pest | Sooty mold; twig decline | Horticultural oils; prune hot spots; biological control |
| Citrus mites | pest | Bronzing; russeted rind | Maintain tree vigor; targeted acaricides if needed |
| Fruit flies | pest | Stings; larval damage | Protein baiting, field sanitation, traps |
| Citrus canker / greasy spot | disease | Lesions/leaf spots & defoliation | Sanitation; copper/protectants; airflow |
| Phytophthora gummosis | disease | Gum exudation; bark rot at collar | Mound soil; improve drainage; trunk paints; resistant rootstocks |
| Citrus tristeza (CTV) | disease | Decline on susceptible rootstocks | Use tolerant rootstocks; rogue infected trees |
| System | Typical | Min | Max | Notes |
|---|---|---|---|---|
| orchard | 15 | 8 | 25 | |
| rainfed smallholder | 12 | 8 | 18 | Bearing improves after year 4–5 |
| irrigated/managed orchard | 25 | 15 | 35 | Good cultivar, nutrition & pest control |
| Country | Region | Planting | Harvest |
|---|---|---|---|
| KE | Warm mid-altitudes (long rains planting) | Mar–Apr | Multiple flushes year-round |
| KE | Warm mid-altitudes (short rains planting) | Oct–Nov | Multiple flushes year-round |
| UG | Central/Eastern (humid) | Mar–Apr | Staggered harvests |
| TZ | Coastal & northern (unimodal) | Nov–Dec | Staggered harvests |
| Country | Region | Suitability |
|---|---|---|
| KE | Coastal; lower & mid-altitudes with irrigation | High |
| KE | Cool highlands >1900 m (frost risk) | Low |
| KE | Low to mid-altitudes | High |
| KE | Poorly drained clays; waterlogged sites | Low |
| TZ | Coastal; Morogoro; northern valleys | High |
| UG | Central/Eastern sub-humid | High |