Growing Dhania in Tharaka Nithi

Soil suitability analysis based on Tharaka Nithi's nutrient profile

Quick answer

Yes, with the right inputs — Tharaka Nithi is moderately suited to Dhania. Tharaka Nithi's soil (pH 4.99, strongly acidic) gives Dhania a suitability score of 64/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.

Tharaka Nithi County is a solid choice for Dhania, with a soil-match score of 64/100. At an average pH of 4.99 the soil is strongly acidic, below Dhania's preferred 6–7.5 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 Dhania's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Dhania, which favours loam. Dhania's full potential is about 1,500 kg/acre (~KES 112,500/acre at KES 75/kg), but at Tharaka Nithi's 64/100 suitability a realistic target here is closer to 1,200 kg/acre (~KES 90,000/acre) unless the constraints above are addressed.

64Suitability score

Soil & climate match

FactorTharaka Nithi soilDhania needsStatus
pH4.9967.5Adjust
Nitrogen1.23 g/kgmin 0.5 g/kgOK
Phosphorus19.6 mg/kgmin 6 mg/kgOK
Potassium211 mg/kgmin 100 mg/kgOK
Rainfall900 mm500–1,000 mmOK
Altitude1,100 m0–2,500 mOK

Top dressing guide

Product
None
Timing
None required
Instruction
Short season crop. No top dressing needed if basal DAP was applied at planting.
Bags per Acre
0

Recommended seed varieties

Desi CorianderMedium/Highland
Local/KALRO · 45-60 days · 10-15 bags/acre
Fast maturing; aromatic; popular in fresh and dried form.

Economics

Market priceKES 75/kg
Expected yield in Tharaka Nithi1,200 kg/acre
Estimated revenueKES 90,000/acre
Adjusted for Tharaka Nithi's 64/100 suitability. Under ideal conditions Dhania can reach 1,500 kg/acre (~KES 112,500/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureLoam

Fertilizer prices

DAP
KES 3,500(6,500)
CAN
KES 2,875(4,500)
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