Growing Barley in Kiambu
Soil suitability analysis based on Kiambu's nutrient profile
Possible but challenging — Kiambu is only marginally suited to Barley. Kiambu's soil (pH 5.28, strongly acidic) gives Barley a suitability score of 43/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Kiambu County is a challenging environment for Barley (soil-match score 43/100) and will need significant amendment before planting. At an average pH of 5.28 the soil is moderately acidic, below Barley'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 1.01 g/kg, P 13.7 mg/kg, K 169 mg/kg against this crop's medium/high/medium demand — so the fertilizer plan below prioritises closing that deficit. Barley prefers loam soils, while Kiambu is largely clay, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Barley is the #95 soil match of the 106 crops we assess for Kiambu County. Barley's full potential is about 1,600 kg/acre (~KES 67,200/acre at KES 42/kg), but at Kiambu's 43/100 suitability a realistic target here is closer to 860 kg/acre (~KES 36,120/acre) unless the constraints above are addressed.
Better matched to Kiambu's soil: Macadamia, Avocado, and Pineapple — each scores higher on the same soil.
Soil & climate match
| Factor | Kiambu soil | Barley needs | Status |
|---|---|---|---|
| pH | 5.28 | 6–7.5 | Adjust |
| Nitrogen | 1.01 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 13.7 mg/kg | min 20 mg/kg | Low |
| Potassium | 169 mg/kg | min 150 mg/kg | OK |
| Rainfall | 1,100 mm | 500–1,000 mm | High |
| Altitude | 1,700 m | 2,000–3,000 m | Low |
Planting calendar
Long Rains
Short Rains
Dry Season
Top dressing guide
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag