Growing Chilies in Garissa
Soil suitability analysis based on Garissa's nutrient profile
Generally not ideal — Garissa is poorly suited to Chilies. Garissa's soil (pH 7.96, alkaline) gives Chilies a suitability score of 17/100. Match fertilizer to Garissa's nitrogen and phosphorus levels for the best result.
Garissa County is a challenging environment for Chilies (soil-match score 17/100) and will need significant amendment before planting. At an average pH of 7.96 the soil sits above Chilies'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 medium/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy soils suit Chilies, which favours sandy loam. Garissa receives approximately 250 mm/year — well below Chilies's minimum of 500 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Chilies is the #19 soil match of the 106 crops we assess for Garissa County. Chilies's full potential is about 2,500 kg/acre (~KES 412,500/acre at KES 165/kg), but at Garissa's 17/100 suitability a realistic target here is closer to 531 kg/acre (~KES 87,615/acre) unless the constraints above are addressed.
Better matched to Garissa's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.
Soil & climate match
| Factor | Garissa soil | Chilies needs | Status |
|---|---|---|---|
| pH | 7.96 | 6–7.5 | Adjust |
| Nitrogen | 0.61 g/kg | min 0.8 g/kg | Low |
| Phosphorus | 37.7 mg/kg | min 12 mg/kg | OK |
| Potassium | 407 mg/kg | min 150 mg/kg | OK |
| Rainfall | 250 mm | 500–1,200 mm | Low |
| Altitude | 200 m | 0–1,200 m | OK |
Top dressing guide
Garissa's nitrogen (0.61 g/kg) is 76% of the 0.8 g/kg Chilies needs, so the standard 0.5 bags/acre is raised to 0.75. Split it across two applications to limit leaching.
Seed varieties for Garissa
Varieties suited to Garissa's 200 m altitude and 250 mm annual rainfall — 1 of 2 chilies varieties we list.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag