Growing Macadamia in Tharaka Nithi
Soil suitability analysis based on Tharaka Nithi's nutrient profile
Yes — Tharaka Nithi is well suited to Macadamia. Tharaka Nithi's soil (pH 4.99, strongly acidic) gives Macadamia a suitability score of 89/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Tharaka Nithi County is well suited to Macadamia, scoring 89/100 on ShambaIQ's soil-match model. Local soils average pH 4.99 — strongly acidic and inside the 4.5–6.5 band Macadamia prefers, so no lime is usually required. Nitrogen (1.23 g/kg), phosphorus (19.6 mg/kg) and potassium (211 mg/kg) all meet Macadamia's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Macadamia, which favours loam. On ShambaIQ's soil-match model, Macadamia is the #2 soil match of the 106 crops we assess for Tharaka Nithi 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.
Soil & climate match
| Factor | Tharaka Nithi soil | Macadamia needs | Status |
|---|---|---|---|
| pH | 4.99 | 4.5–6.5 | OK |
| Nitrogen | 1.23 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 19.6 mg/kg | min 12 mg/kg | OK |
| Potassium | 211 mg/kg | min 150 mg/kg | OK |
| Rainfall | 900 mm | 700–1,500 mm | OK |
| Altitude | 1,100 m | 900–2,100 m | OK |
Planting calendar for Tharaka Nithi
Long Rains· March–MayMain season here
Short Rains· October–December
Dry Season· January–March
Top dressing guide
Tharaka Nithi's nitrogen (1.23 g/kg) already meets Macadamia's 0.8 g/kg requirement, so this is a maintenance rate.
Recommended seed varieties
No variety in our list is specifically rated for Tharaka Nithi's 1,100 m altitude and 900 mm rainfall, so all 3 are shown. Confirm with your agrovet before buying.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag