Growing Macadamia in Embu

Soil suitability analysis based on Embu's nutrient profile

Quick answer

Yes — Embu is well suited to Macadamia. Embu's soil (pH 5.1, strongly acidic) gives Macadamia a suitability score of 89/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.

Embu County is well suited to Macadamia, scoring 89/100 on ShambaIQ's soil-match model. Local soils average pH 5.1 — moderately acidic and inside the 4.5–6.5 band Macadamia prefers, so no lime is usually required. Nitrogen (1.04 g/kg), phosphorus (12.6 mg/kg) and potassium (194 mg/kg) all meet Macadamia's requirements, so a maintenance fertilizer programme is enough. The county's predominantly clay loam soils suit Macadamia, which favours loam. On ShambaIQ's soil-match model, Macadamia is the #3 soil match of the 106 crops we assess for Embu County. At current prices (about KES 110/kg) and a typical 1,800 kg/acre yield, a well-managed Macadamia crop here can gross roughly KES 198,000 per acre.

89Suitability score

Soil & climate match

FactorEmbu soilMacadamia needsStatus
pH5.14.5–6.5OK
Nitrogen1.04 g/kgmin 0.8 g/kgOK
Phosphorus12.6 mg/kgmin 12 mg/kgOK
Potassium194 mg/kgmin 150 mg/kgOK
Rainfall1,300 mm700–1,500 mmOK
Altitude1,400 m900–2,100 mOK

Planting calendar for Embu

Long Rains· March–MayMain season here

March
Fertilizer (NPK) & Weed Control
April
Flower & Nut-set Monitoring
May
Stink Bug Scouting & Pruning

Short Rains· October–December

October
Nut Development & Top Dressing
November
Pest Control (nut borer)
December
Harvest Mature Nut Fall

Dry Season· January–March

January
Harvest & Dehusking
February
Irrigation & Mulching
March
Formative & Sanitation Pruning

Top dressing guide

Product
CAN
Timing
Start of rains (biannual)
Instruction
Apply in ring around drip line. Young trees need less.
Bags per acre in Embu
0.5

Embu's nitrogen (1.04 g/kg) already meets Macadamia's 0.8 g/kg requirement, so this is a maintenance rate.

Seed varieties for Embu

Varieties suited to Embu's 1,400 m altitude and 1,300 mm annual rainfall — 3 of 3 macadamia varieties we list.

KRG 15Medium/Highland
KALRO · 1000-1500 days · 2.7–4.5 tons/acre
High nut recovery; suited to central highlands.
Embu 1Medium/Highland
KALRO · 1000-1500 days · 2.3–4.0 tons/acre
Good kernel quality; moderate yield.
EMB-3Medium/Highland
KALRO-Thika · 1400-1550 days · 3.1–5.0 tons/acre
High first-grade nut ratio; good kernel recovery; KEPHIS certified; suited to Central Kenya highlands.

Economics

Market priceKES 110/kg
Expected yield 1,800 kg/acre
Estimated revenueKES 198,000/acre

Preferred textureLoam

Fertilizer prices

DAP
KES 3,500(6,500)
CAN
KES 2,875(5,700)
NPK 17:17:17
KES 3,275(5,600)
Urea
KES 3,500(5,500)
Lime
KES 1,500(1,800)

Green = subsidized · (Commercial) per 50kg bag