Growing Sunflower in Nandi

Soil suitability analysis based on Nandi's nutrient profile

Quick answer

Yes, with the right inputs — Nandi is moderately suited to Sunflower. Nandi's soil (pH 6.17, slightly acidic) gives Sunflower a suitability score of 55/100. Match fertilizer to Nandi's nitrogen and phosphorus levels for the best result.

Sunflower can be grown in Nandi County, but the soil scores 55/100 and needs targeted management to reach full potential. Local soils average pH 6.17 — slightly acidic to near-neutral and inside the 6–7.5 band Sunflower prefers, so no lime is usually required. Nitrogen (1.37 g/kg), phosphorus (26.4 mg/kg) and potassium (207 mg/kg) all meet Sunflower's requirements, so a maintenance fertilizer programme is enough. Sunflower prefers sandy soils, while Nandi is largely clay loam, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Sunflower is the #81 soil match of the 106 crops we assess for Nandi County. Sunflower's full potential is about 750 kg/acre (~KES 36,000/acre at KES 48/kg), but at Nandi's 55/100 suitability a realistic target here is closer to 516 kg/acre (~KES 24,768/acre) unless the constraints above are addressed.

Better matched to Nandi's soil: Garden Peas, Maize, and Kale (Sukuma Wiki) — each scores higher on the same soil.

55Suitability score

Soil & climate match

FactorNandi soilSunflower needsStatus
pH6.1767.5OK
Nitrogen1.37 g/kgmin 0.8 g/kgOK
Phosphorus26.4 mg/kgmin 12 mg/kgOK
Potassium207 mg/kgmin 150 mg/kgOK
Rainfall1,400 mm400–800 mmHigh
Altitude1,900 m0–2,000 mOK

Planting calendar for Nandi

Long Rains· MarchMayMain season here

March
Sowing & Basal Fertilizer
April
Top Dressing & Weed Control
May
Head Development & Bird Protection

Short Rains· AugustOctober

August
Sowing & Basal Fertilizer
September
Top Dressing & 1st Weeding
October
Harvesting & Drying

Dry Season· JanuaryMarch

January
Harvesting & Threshing
February
Land Resting
March
Seed Selection & Storage

Top dressing guide

Product
CAN
Timing
Week 4–5 after emergence
Instruction
Apply at vegetative stage before flower bud initiation.
Bags per acre in Nandi
0.5

Nandi's nitrogen (1.37 g/kg) already meets Sunflower's 0.8 g/kg requirement, so this is a maintenance rate.

Seed varieties for Nandi

Varieties suited to Nandi's 1,900 m altitude and 1,400 mm annual rainfall — 2 of 2 sunflower varieties we list.

Kenya FedhaMedium/Dryland
Kenya Seed Company · 90-110 days · 8-12 bags/acre
High oil content (40-45%); resistant to downy mildew.
H8998Medium
Pannar Seeds · 85-100 days · 10-14 bags/acre
Hybrid; very high oil yield; uniform heads.

Economics

Market priceKES 48/kg
Expected yield in Nandi516 kg/acre
Estimated revenueKES 24,768/acre
Adjusted for Nandi's 55/100 suitability. Under ideal conditions Sunflower can reach 750 kg/acre (~KES 36,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureSandy

Fertilizer prices

DAP
KES 3,500(6,500)
CAN
KES 2,875(5,700)
NPK 17:17:17
KES 3,275(5,600)
Urea
KES 3,500(5,500)
Lime
KES 1,500(1,800)

Green = subsidized · (Commercial) per 50kg bag