Loading…

Loading…

Farmlens Eyes On Earth
Welcome
Sign in to continue
Login Register
Download PDF
Lemon

Crop details

Lemon

Citrus limon
Family: Rutaceae

Categories

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)

Planting: Plant grafted, disease-free seedlings at onset of rains in 60×60×60 cm pits mixed with compost. Keep graft union 15–20 cm above soil. Mulch basins.
Transplanting: Do not disturb root ball; stake young trees; paint trunks to prevent sunburn.
Irrigation: Regular moisture critical at flowering and fruit set; irrigate deeply and infrequently; maintain mulch.
Fertigation: Split N and K into small, frequent doses during active growth; include Ca/Mg where needed.
Pest scouting: Scout for citrus leaf miner, aphids/psyllids, scales, mites, and fruit flies; monitor for HLB symptoms.
Pruning: Form 3–4 scaffold branches; remove suckers below graft; light annual thinning.
Harvest: Harvest when fruit is fully sized and color breaks; pick with clip to avoid tearing rinds.
Postharvest: Handle gently; wash/sanitize; dry and store cool with airflow; avoid ethylene exposure.

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)

Lemon
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