Growing French Beans in Kiambu

Soil suitability analysis based on Kiambu's nutrient profile

Kiambu County is a solid choice for French Beans, with a soil-match score of 71/100. At an average pH of 5.28 the soil is moderately acidic, below French Beans's preferred 5.8–7 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 low/high/medium demand — so the fertilizer plan below prioritises closing that deficit. French Beans prefers loam soils, while Kiambu is largely clay, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, French Beans is the #33 soil match of the 106 crops we assess for Kiambu County. French Beans's full potential is about 3,500 kg/acre (~KES 280,000/acre at KES 80/kg), but at Kiambu's 71/100 suitability a realistic target here is closer to 3,106 kg/acre (~KES 248,480/acre) unless the constraints above are addressed.