Growing Grapes in Mandera

Soil suitability analysis based on Mandera's nutrient profile

Mandera County is a challenging environment for Grapes (soil-match score 7/100) and will need significant amendment before planting. At an average pH of 8.38 the soil sits above Grapes's preferred 6–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.53 g/kg, P 38.3 mg/kg, K 420 mg/kg against this crop's medium/high/high demand — so the fertilizer plan below prioritises closing that deficit. Grapes prefers loam soils, while Mandera is largely sandy, so drainage and organic-matter management matter more here. Mandera receives approximately 180 mm/year — well below Grapes's minimum of 500 mm — so supplemental irrigation would be essential for this crop. Grapes's full potential is about 8,000 kg/acre (~KES 1,200,000/acre at KES 150/kg), but at Mandera's 7/100 suitability a realistic target here is closer to 700 kg/acre (~KES 105,000/acre) unless the constraints above are addressed.