Growing Guava in Mandera

Soil suitability analysis based on Mandera's nutrient profile

Mandera County is a challenging environment for Guava (soil-match score 3/100) and will need significant amendment before planting. At an average pH of 8.38 the soil sits above Guava's preferred 5.5–7.5 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/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Guava 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 Guava's minimum of 700 mm — so supplemental irrigation would be essential for this crop. Guava's full potential is about 10,000 kg/acre (~KES 600,000/acre at KES 60/kg), but at Mandera's 3/100 suitability a realistic target here is closer to 375 kg/acre (~KES 22,500/acre) unless the constraints above are addressed.