Growing Chickpeas in Tharaka Nithi
Soil suitability analysis based on Tharaka Nithi's nutrient profile
Generally not ideal — Tharaka Nithi is poorly suited to Chickpeas. Tharaka Nithi's soil (pH 4.99, strongly acidic) gives Chickpeas a suitability score of 21/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Tharaka Nithi County is a challenging environment for Chickpeas (soil-match score 21/100) and will need significant amendment before planting. At an average pH of 4.99 the soil is strongly acidic, below Chickpeas's preferred 5.5–8 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.23 g/kg), phosphorus (19.6 mg/kg) and potassium (211 mg/kg) all meet Chickpeas's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Chickpeas, which favours sandy loam. On ShambaIQ's soil-match model, Chickpeas is the #103 soil match of the 106 crops we assess for Tharaka Nithi County. Chickpeas's full potential is about 600 kg/acre (~KES 120,000/acre at KES 200/kg), but at Tharaka Nithi's 21/100 suitability a realistic target here is closer to 158 kg/acre (~KES 31,600/acre) unless the constraints above are addressed.
Better matched to Tharaka Nithi's soil: Avocado, Macadamia, and Cassava — each scores higher on the same soil.
Soil & climate match
| Factor | Tharaka Nithi soil | Chickpeas needs | Status |
|---|---|---|---|
| pH | 4.99 | 5.5–8 | Adjust |
| Nitrogen | 1.23 g/kg | min 0.5 g/kg | OK |
| Phosphorus | 19.6 mg/kg | min 6 mg/kg | OK |
| Potassium | 211 mg/kg | min 100 mg/kg | OK |
| Rainfall | 900 mm | 150–500 mm | High |
| Altitude | 1,100 m | 1,500–2,600 m | Low |
Seed varieties for Tharaka Nithi
9 chickpeas varieties are rated for Tharaka Nithi's altitude (1,100 m) and rainfall (900 mm):
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag