Growing Dolichos in Bungoma

Soil suitability analysis based on Bungoma's nutrient profile

Quick answer

Yes, with the right inputs — Bungoma is moderately suited to Dolichos. Bungoma's soil (pH 5.56, slightly acidic) gives Dolichos a suitability score of 69/100. Match fertilizer to Bungoma's nitrogen and phosphorus levels for the best result.

Bungoma County is a solid choice for Dolichos, with a soil-match score of 69/100. Local soils average pH 5.56 — slightly acidic to near-neutral and inside the 5–7.5 band Dolichos prefers, so no lime is usually required. Nitrogen (1.12 g/kg), phosphorus (15.7 mg/kg) and potassium (161 mg/kg) all meet Dolichos's requirements, so a maintenance fertilizer programme is enough. Dolichos prefers sandy loam soils, while Bungoma is largely clay loam, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Dolichos is the #56 soil match of the 106 crops we assess for Bungoma County. Dolichos's full potential is about 600 kg/acre (~KES 72,000/acre at KES 120/kg), but at Bungoma's 69/100 suitability a realistic target here is closer to 518 kg/acre (~KES 62,160/acre) unless the constraints above are addressed.

69Suitability score

Soil & climate match

FactorBungoma soilDolichos needsStatus
pH5.565–7.5OK
Nitrogen1.12 g/kgmin 0.5 g/kgOK
Phosphorus15.7 mg/kgmin 6 mg/kgOK
Potassium161 mg/kgmin 100 mg/kgOK
Rainfall1,400 mm400–1,000 mmHigh
Altitude1,500 m1,000–2,100 mOK

Planting calendar for Bungoma

Long Rains· March–MayMain season here

March
Sowing & DAP Basal Fertilizer (NO CAN — nitrogen fixer)
April
Weeding & Vine Support if needed
May
Pod Fill & Harvesting

Short Rains· August–October

August
Sowing & Basal Fertilizer (no CAN)
September
Weeding & Pest Scouting
October
Harvesting & Seed Drying

Dry Season· January–March

January
Post-Harvest seed storage
February
Land Resting (N benefit remains in soil)
March
Seed Selection & preparation

Top dressing guide

Product
None
Timing
None required
Instruction
Dolichos (njahi) fixes its own nitrogen through rhizobia. Do NOT apply CAN — it suppresses nodulation and reduces yield. A starter dose of phosphorus at planting is enough.
Bags per acre in Bungoma
0

Bungoma's nitrogen reads 1.12 g/kg, but the rate stays at zero: Dolichos is not top-dressed, for the crop-specific reason above.

Seed varieties for Bungoma

Varieties suited to Bungoma's 1,500 m altitude and 1,400 mm annual rainfall — 6 of 6 dolichos varieties we list.

Njahi BlackMedium/Highland
KALRO · 90-120 days · 8-12 bags/acre
Black hyacinth bean (njahi); popular in Central Kenya; high protein; nitrogen-fixing soil improver.
DL 1002Dryland/Medium
KALRO · 90-110 days · 7-11 bags/acre
Improved dual-purpose lablab; grain and fodder; tolerant to drought and low fertility.
Eldoret BrownMedium
KALRO · 100-130 days · 8-13 bags/acre
Brown-seeded selection; vigorous; good for intercropping with maize.
ELDO-KT Black 1Medium/Highland 10-2000m
University of Eldoret · 135-150 days · 14-22 bags/acre
Black seeded; short cooking time; uniform maturity.
ELDO-KT CreamMedium/Highland 10-2000m
University of Eldoret · 120-135 days · 16-25 bags/acre
Cream seeded; early maturity; good flavor; short cooking time.
ELDO-KT Black 2Medium/Highland 10-2000m
University of Eldoret · 120-135 days · 16-29 bags/acre
Black seeded; medium maturity; robust growth.

Economics

Market priceKES 120/kg
Expected yield in Bungoma518 kg/acre
Estimated revenueKES 62,160/acre
Adjusted for Bungoma's 69/100 suitability. Under ideal conditions Dolichos can reach 600 kg/acre (~KES 72,000/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(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