Growing Macadamia in Meru

Soil suitability analysis based on Meru's nutrient profile

Quick answer

Yes — Meru is well suited to Macadamia. Meru's soil (pH 4.88, strongly acidic) gives Macadamia a suitability score of 87/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.

Meru County is well suited to Macadamia, scoring 87/100 on ShambaIQ's soil-match model. Local soils average pH 4.88 — strongly acidic and inside the 4.5–6.5 band Macadamia prefers, so no lime is usually required. Nitrogen (1.22 g/kg), phosphorus (20.3 mg/kg) and potassium (218 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 Meru 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.

87Suitability score

Soil & climate match

FactorMeru soilMacadamia needsStatus
pH4.884.5–6.5OK
Nitrogen1.22 g/kgmin 0.8 g/kgOK
Phosphorus20.3 mg/kgmin 12 mg/kgOK
Potassium218 mg/kgmin 150 mg/kgOK
Rainfall1,400 mm700–1,500 mmOK
Altitude1,500 m900–2,100 mOK

Planting calendar for Meru

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 Meru
0.5

Meru's nitrogen (1.22 g/kg) already meets Macadamia's 0.8 g/kg requirement, so this is a maintenance rate.

Seed varieties for Meru

Varieties suited to Meru's 1,500 m altitude and 1,400 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