Growing Watermelon in Meru
Soil suitability analysis based on Meru's nutrient profile
Generally not ideal — Meru is poorly suited to Watermelon. Meru's soil (pH 4.88, strongly acidic) gives Watermelon a suitability score of 31/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Meru County is a challenging environment for Watermelon (soil-match score 31/100) and will need significant amendment before planting. At an average pH of 4.88 the soil is strongly acidic, below Watermelon's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.22 g/kg), phosphorus (20.3 mg/kg) and potassium (218 mg/kg) all meet Watermelon's requirements, so a maintenance fertilizer programme is enough. Watermelon prefers sandy soils, while Meru is largely clay loam, so drainage and organic-matter management matter more here. Watermelon's full potential is about 15,000 kg/acre (~KES 150,000/acre at KES 10/kg), but at Meru's 31/100 suitability a realistic target here is closer to 5,813 kg/acre (~KES 58,130/acre) unless the constraints above are addressed.
Soil & climate match
| Factor | Meru soil | Watermelon needs | Status |
|---|---|---|---|
| pH | 4.88 | 6–7.5 | Adjust |
| Nitrogen | 1.22 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 20.3 mg/kg | min 12 mg/kg | OK |
| Potassium | 218 mg/kg | min 150 mg/kg | OK |
| Rainfall | 1,400 mm | 300–700 mm | High |
| Altitude | 1,500 m | 0–1,500 m | OK |
Top dressing guide
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag