Growing Lettuce in Vihiga

Soil suitability analysis based on Vihiga's nutrient profile

Lettuce can be grown in Vihiga County, but the soil scores 59/100 and needs targeted management to reach full potential. At an average pH of 5.62 the soil is slightly acidic to near-neutral, below Lettuce's preferred 6–7 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is nitrogen — measured at N 1.02 g/kg, P 14.8 mg/kg, K 164 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly clay loam soils suit Lettuce, which favours loam. Lettuce's full potential is about 7,000 kg/acre (~KES 350,000/acre at KES 50/kg), but at Vihiga's 59/100 suitability a realistic target here is closer to 5,163 kg/acre (~KES 258,150/acre) unless the constraints above are addressed.