Growing Amaranth in Nyandarua

Soil suitability analysis based on Nyandarua's nutrient profile

Nyandarua County is a solid choice for Amaranth, with a soil-match score of 74/100. At an average pH of 5.38 the soil is moderately acidic, below Amaranth's preferred 5.5–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.28 g/kg), phosphorus (14 mg/kg) and potassium (166 mg/kg) all meet Amaranth's requirements, so a maintenance fertilizer programme is enough. Amaranth prefers loam soils, while Nyandarua is largely clay, so drainage and organic-matter management matter more here. At current prices (about KES 40/kg) and a typical 4,000 kg/acre yield, a well-managed Amaranth crop here can gross roughly KES 160,000 per acre.