Growing Green Grams in Nyamira
Soil suitability analysis based on Nyamira's nutrient profile
Generally not ideal — Nyamira is poorly suited to Green Grams. Nyamira's soil (pH 5.58, slightly acidic) gives Green Grams a suitability score of 38/100. Match fertilizer to Nyamira's nitrogen and phosphorus levels for the best result.
Nyamira County is a challenging environment for Green Grams (soil-match score 38/100) and will need significant amendment before planting. Local soils average pH 5.58 — slightly acidic to near-neutral and inside the 5.5–8 band Green Grams prefers, so no lime is usually required. Nitrogen (0.84 g/kg), phosphorus (11.6 mg/kg) and potassium (148 mg/kg) all meet Green Grams's requirements, so a maintenance fertilizer programme is enough. Green Grams prefers sandy loam soils, while Nyamira is largely clay loam, so drainage and organic-matter management matter more here. Green Grams's full potential is about 400 kg/acre (~KES 48,000/acre at KES 120/kg), but at Nyamira's 38/100 suitability a realistic target here is closer to 190 kg/acre (~KES 22,800/acre) unless the constraints above are addressed.
Soil & climate match
| Factor | Nyamira soil | Green Grams needs | Status |
|---|---|---|---|
| pH | 5.58 | 5.5–8 | OK |
| Nitrogen | 0.84 g/kg | min 0.5 g/kg | OK |
| Phosphorus | 11.6 mg/kg | min 6 mg/kg | OK |
| Potassium | 148 mg/kg | min 100 mg/kg | OK |
| Rainfall | 1,600 mm | 250–700 mm | High |
| Altitude | 1,700 m | 0–1,800 m | OK |
Top dressing guide
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag