Growing Grapes in Meru

Soil suitability analysis based on Meru's nutrient profile

Grapes can be grown in Meru County, but the soil scores 49/100 and needs targeted management to reach full potential. At an average pH of 4.88 the soil is strongly acidic, below Grapes'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 Grapes's requirements, so a maintenance fertilizer programme is enough. The county's predominantly clay loam soils suit Grapes, which favours loam. Grapes's full potential is about 8,000 kg/acre (~KES 1,200,000/acre at KES 150/kg), but at Meru's 49/100 suitability a realistic target here is closer to 4,900 kg/acre (~KES 735,000/acre) unless the constraints above are addressed.