Growing Finger Millet in Tharaka Nithi

Soil suitability analysis based on Tharaka Nithi's nutrient profile

Quick answer

Yes — Tharaka Nithi is well suited to Finger Millet. Tharaka Nithi's soil (pH 4.99, strongly acidic) gives Finger Millet a suitability score of 79/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.

Tharaka Nithi County is well suited to Finger Millet, scoring 79/100 on ShambaIQ's soil-match model. At an average pH of 4.99 the soil is strongly acidic, below Finger Millet's preferred 5–7 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.23 g/kg), phosphorus (19.6 mg/kg) and potassium (211 mg/kg) all meet Finger Millet's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Finger Millet, which favours sandy. On ShambaIQ's soil-match model, Finger Millet is the #5 soil match of the 106 crops we assess for Tharaka Nithi County. At current prices (about KES 60/kg) and a typical 800 kg/acre yield, a well-managed Finger Millet crop here can gross roughly KES 48,000 per acre.

79Suitability score

Soil & climate match

FactorTharaka Nithi soilFinger Millet needsStatus
pH4.9957Adjust
Nitrogen1.23 g/kgmin 0.5 g/kgOK
Phosphorus19.6 mg/kgmin 6 mg/kgOK
Potassium211 mg/kgmin 100 mg/kgOK
Rainfall900 mm400–1,400 mmOK
Altitude1,100 m0–2,000 mOK

Top dressing guide

Product
CAN
Timing
Week 3–4 after germination
Instruction
One light application at vegetative stage. Do not over-apply.
Bags per Acre
0.3

Recommended seed varieties

P224Dryland/Medium
KALRO · 75-90 days · 6-8 bags/acre
Early maturing; blast disease tolerant.
U15Medium
KALRO · 90-100 days · 8-10 bags/acre
High yielding; good grain quality for flour.

Economics

Market priceKES 60/kg
Expected yield in Tharaka Nithi790 kg/acre
Estimated revenueKES 47,400/acre
Adjusted for Tharaka Nithi's 79/100 suitability. Under ideal conditions Finger Millet can reach 800 kg/acre (~KES 48,000/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