Growing Sesame (Simsim) in Nyeri
Soil suitability analysis based on Nyeri's nutrient profile
Possible but challenging — Nyeri is only marginally suited to Sesame (Simsim). Nyeri's soil (pH 5.23, strongly acidic) gives Sesame (Simsim) a suitability score of 52/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Sesame (Simsim) can be grown in Nyeri County, but the soil scores 52/100 and needs targeted management to reach full potential. At an average pH of 5.23 the soil is moderately acidic, below Sesame (Simsim)'s preferred 5.5–7 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.09 g/kg), phosphorus (15.5 mg/kg) and potassium (192 mg/kg) all meet Sesame (Simsim)'s requirements, so a maintenance fertilizer programme is enough. Sesame (Simsim) prefers sandy soils, while Nyeri is largely clay, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Sesame (Simsim) is the #80 soil match of the 106 crops we assess for Nyeri County. Sesame (Simsim)'s full potential is about 250 kg/acre (~KES 87,500/acre at KES 350/kg), but at Nyeri's 52/100 suitability a realistic target here is closer to 163 kg/acre (~KES 57,050/acre) unless the constraints above are addressed.
Better matched to Nyeri's soil: Macadamia, Pineapple, and Avocado — each scores higher on the same soil.
Soil & climate match
| Factor | Nyeri soil | Sesame (Simsim) needs | Status |
|---|---|---|---|
| pH | 5.23 | 5.5–7 | Adjust |
| Nitrogen | 1.09 g/kg | min 0.5 g/kg | OK |
| Phosphorus | 15.5 mg/kg | min 6 mg/kg | OK |
| Potassium | 192 mg/kg | min 100 mg/kg | OK |
| Rainfall | 1,200 mm | 300–800 mm | High |
| Altitude | 1,700 m | 0–1,600 m | High |
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag