Growing Sunflower in Busia
Soil suitability analysis based on Busia's nutrient profile
Possible but challenging — Busia is only marginally suited to Sunflower. Busia's soil (pH 5.29, strongly acidic) gives Sunflower a suitability score of 43/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Busia County is a challenging environment for Sunflower (soil-match score 43/100) and will need significant amendment before planting. At an average pH of 5.29 the soil is moderately acidic, below Sunflower's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (0.91 g/kg), phosphorus (16.6 mg/kg) and potassium (175 mg/kg) all meet Sunflower's requirements, so a maintenance fertilizer programme is enough. Sunflower prefers sandy soils, while Busia is largely clay loam, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Sunflower is the #86 soil match of the 106 crops we assess for Busia County. Sunflower's full potential is about 750 kg/acre (~KES 36,000/acre at KES 48/kg), but at Busia's 43/100 suitability a realistic target here is closer to 403 kg/acre (~KES 19,344/acre) unless the constraints above are addressed.
Better matched to Busia's soil: Macadamia, Avocado, and Pineapple — each scores higher on the same soil.
Soil & climate match
| Factor | Busia soil | Sunflower needs | Status |
|---|---|---|---|
| pH | 5.29 | 6–7.5 | Adjust |
| Nitrogen | 0.91 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 16.6 mg/kg | min 12 mg/kg | OK |
| Potassium | 175 mg/kg | min 150 mg/kg | OK |
| Rainfall | 1,400 mm | 400–800 mm | High |
| Altitude | 1,200 m | 0–2,000 m | OK |
Planting calendar for Busia
Long Rains· March–MayMain season here
Short Rains· September–November
Dry Season· January–March
Top dressing guide
Busia's nitrogen (0.91 g/kg) already meets Sunflower's 0.8 g/kg requirement, so this is a maintenance rate.
Seed varieties for Busia
Varieties suited to Busia's 1,200 m altitude and 1,400 mm annual rainfall — 2 of 2 sunflower varieties we list.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag