Growing Sweet Orange in Tharaka Nithi
Soil suitability analysis based on Tharaka Nithi's nutrient profile
Yes, with the right inputs — Tharaka Nithi is moderately suited to Sweet Orange. Tharaka Nithi's soil (pH 4.99, strongly acidic) gives Sweet Orange a suitability score of 61/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Tharaka Nithi County is a solid choice for Sweet Orange, with a soil-match score of 61/100. At an average pH of 4.99 the soil is strongly acidic, below Sweet Orange's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is phosphorus — measured at N 1.23 g/kg, P 19.6 mg/kg, K 211 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy loam soils suit Sweet Orange, which favours loam. On ShambaIQ's soil-match model, Sweet Orange is the #63 soil match of the 106 crops we assess for Tharaka Nithi County. Sweet Orange's full potential is about 12,000 kg/acre (~KES 600,000/acre at KES 50/kg), but at Tharaka Nithi's 61/100 suitability a realistic target here is closer to 9,150 kg/acre (~KES 457,500/acre) unless the constraints above are addressed.
Soil & climate match
| Factor | Tharaka Nithi soil | Sweet Orange needs | Status |
|---|---|---|---|
| pH | 4.99 | 6–7.5 | Adjust |
| Nitrogen | 1.23 g/kg | min 1.2 g/kg | OK |
| Phosphorus | 19.6 mg/kg | min 20 mg/kg | Low |
| Potassium | 211 mg/kg | min 200 mg/kg | OK |
| Rainfall | 900 mm | 600–1,200 mm | OK |
| Altitude | 1,100 m | 0–2,100 m | OK |
Planting calendar for Tharaka Nithi
Long Rains· March–MayMain season here
Short Rains· October–December
Top dressing guide
Tharaka Nithi's nitrogen (1.23 g/kg) already meets Sweet Orange's 1.2 g/kg requirement, so this is a maintenance rate.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag