Growing Sunflower in Kisumu
Soil suitability analysis based on Kisumu's nutrient profile
Possible but challenging — Kisumu is only marginally suited to Sunflower. Kisumu's soil (pH 5.54, slightly acidic) gives Sunflower a suitability score of 54/100. Match fertilizer to Kisumu's nitrogen and phosphorus levels for the best result.
Sunflower can be grown in Kisumu County, but the soil scores 54/100 and needs targeted management to reach full potential. At an average pH of 5.54 the soil is slightly acidic to near-neutral, 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 (12.5 mg/kg) and potassium (166 mg/kg) all meet Sunflower's requirements, so a maintenance fertilizer programme is enough. Sunflower prefers sandy soils, while Kisumu is largely clay, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Sunflower is the #78 soil match of the 106 crops we assess for Kisumu County. Sunflower's full potential is about 750 kg/acre (~KES 36,000/acre at KES 48/kg), but at Kisumu's 54/100 suitability a realistic target here is closer to 506 kg/acre (~KES 24,288/acre) unless the constraints above are addressed.
Better matched to Kisumu's soil: Cassava, Macadamia, and Pineapple — each scores higher on the same soil.
Soil & climate match
| Factor | Kisumu soil | Sunflower needs | Status |
|---|---|---|---|
| pH | 5.54 | 6–7.5 | Adjust |
| Nitrogen | 0.91 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 12.5 mg/kg | min 12 mg/kg | OK |
| Potassium | 166 mg/kg | min 150 mg/kg | OK |
| Rainfall | 1,200 mm | 400–800 mm | High |
| Altitude | 1,150 m | 0–2,000 m | OK |
Planting calendar for Kisumu
Long Rains· March–MayMain season here
Short Rains· September–November
Dry Season· January–March
Top dressing guide
Kisumu's nitrogen (0.91 g/kg) already meets Sunflower's 0.8 g/kg requirement, so this is a maintenance rate.
Recommended seed varieties
No variety in our list is specifically rated for Kisumu's 1,150 m altitude and 1,200 mm rainfall, so all 2 are shown. Confirm with your agrovet before buying.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag