Growing Moringa in Tharaka Nithi

Soil suitability analysis based on Tharaka Nithi's nutrient profile

Tharaka Nithi County is a solid choice for Moringa, with a soil-match score of 61/100. At an average pH of 4.99 the soil is strongly acidic, below Moringa's preferred 6–8 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 Moringa's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Moringa, which favours sandy loam. Moringa's full potential is about 4,000 kg/acre (~KES 400,000/acre at KES 100/kg), but at Tharaka Nithi's 61/100 suitability a realistic target here is closer to 3,050 kg/acre (~KES 305,000/acre) unless the constraints above are addressed.

61Suitability score

Soil & climate match

FactorTharaka Nithi soilMoringa needsStatus
pH4.9968Adjust
Nitrogen1.23 g/kgmin 0.5 g/kgOK
Phosphorus19.6 mg/kgmin 12 mg/kgOK
Potassium211 mg/kgmin 150 mg/kgOK
Rainfall900 mm400–1,200 mmOK
Altitude1,100 m0–1,400 mOK

Planting calendar

Long Rains

Month 1
Direct Sowing & Basal
Month 2
Weeding & Pruning
Month 3
Leaf Harvest

Short Rains

Month 1
Direct Sowing & Basal
Month 2
Weeding & Pruning
Month 3
Leaf Harvest

Top dressing guide

Product
CAN
Timing
Twice per year
Instruction
Drought-hardy — minimal feeding. Top-dress after heavy cuttings for leaf regrowth.
Bags per Acre
0.3

Economics

Market priceKES 100/kg
Expected yield in Tharaka Nithi3,050 kg/acre
Estimated revenueKES 305,000/acre
Adjusted for Tharaka Nithi's 61/100 suitability. Under ideal conditions Moringa can reach 4,000 kg/acre (~KES 400,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureSandy Loam

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