Growing Garlic in Garissa

Soil suitability analysis based on Garissa's nutrient profile

Garissa County is a challenging environment for Garlic (soil-match score 16/100) and will need significant amendment before planting. At an average pH of 7.96 the soil sits above Garlic's preferred 6–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.61 g/kg, P 37.7 mg/kg, K 407 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy soils suit Garlic, which favours sandy loam. Garissa receives approximately 250 mm/year — well below Garlic's minimum of 500 mm — so supplemental irrigation would be essential for this crop. Garlic's full potential is about 3,000 kg/acre (~KES 825,000/acre at KES 275/kg), but at Garissa's 16/100 suitability a realistic target here is closer to 600 kg/acre (~KES 165,000/acre) unless the constraints above are addressed.