Growing Pawpaw in Meru

Soil suitability analysis based on Meru's nutrient profile

Meru County is a challenging environment for Pawpaw (soil-match score 39/100) and will need significant amendment before planting. At an average pH of 4.88 the soil is strongly acidic, below Pawpaw's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.22 g/kg), phosphorus (20.3 mg/kg) and potassium (218 mg/kg) all meet Pawpaw's requirements, so a maintenance fertilizer programme is enough. Pawpaw prefers sandy loam soils, while Meru is largely clay loam, so drainage and organic-matter management matter more here. At 1500 m, the county sits above Pawpaw's preferred altitude ceiling of 1200 m, where frost risk and cold nights reduce the crop's productivity. Pawpaw's full potential is about 12,000 kg/acre (~KES 336,000/acre at KES 28/kg), but at Meru's 39/100 suitability a realistic target here is closer to 5,850 kg/acre (~KES 163,800/acre) unless the constraints above are addressed.