Fertilizer Top Calculator 2025
Calculate fertilizer requirements for your farm. Get DAP, CAN, NPK, and manure quantities with current Kenya prices and application guidelines.
Trusted by farmers, contractors, and businesses across Kenya. Verified calculations based on official 2025 data from KNBS, KALRO, and industry experts.
Farm Fertilizer Calculator
Kenya Fertilizer Prices 2025
* Prices per 50kg bag. Market prices vary by location and season.
Quick Reference
Complete Guide to Fertilizer Application in Kenya
Fertilizer Rates by Crop (per Hectare)
| Crop | DAP (kg) | CAN (kg) |
|---|---|---|
| Maize | 200 | 200 |
| Wheat | 150 | 150 |
| Beans | 100 | - |
| Potatoes | 300* | 200 |
| Tomatoes | 400 | 200 |
| Kale | 200 | 150 |
* NPK 17:17:17 recommended for potatoes
Fertilizer Nutrient Content (N-P-K)
| Fertilizer | N% | P₂O₅% | K₂O% |
|---|---|---|---|
| DAP | 18 | 46 | 0 |
| CAN | 26 | 0 | 0 |
| Urea | 46 | 0 | 0 |
| NPK 17:17:17 | 17 | 17 | 17 |
| TSP | 0 | 46 | 0 |
| MOP | 0 | 0 | 60 |
Frequently Asked Questions
How much DAP fertilizer per acre for maize in Kenya?
For maize in Kenya, apply 80-100 kg DAP per acre (200 kg per hectare) at planting. DAP (Diammonium Phosphate 18:46:0) provides phosphorus for root development. Follow with 80-100 kg CAN per acre at knee height (4-6 weeks) for nitrogen. This gives an expected yield of 15-20 bags per acre.
What is the best fertilizer for maize in Kenya?
For maize in Kenya, use DAP (18:46:0) at planting for phosphorus and CAN (26:0:0) as topdressing for nitrogen. Alternative: NPK 23:23:0 at planting plus Urea topdressing. Apply DAP in furrows 5cm from seeds, and broadcast CAN when maize is knee-high. Rates: 200 kg DAP/ha + 200 kg CAN/ha.
What are the current fertilizer prices in Kenya 2025?
Current Kenya fertilizer prices (2025): DAP: KES 4,000-4,500 per 50kg bag, CAN: KES 3,000-3,500 per 50kg bag, NPK 17:17:17: KES 3,500-4,000 per 50kg bag, Urea: KES 3,200-3,800 per 50kg bag. Government subsidized fertilizer through NCPB is often cheaper. Check local agrovets for current prices.
How do I calculate fertilizer application rate?
To calculate fertilizer rate: 1) Determine crop nutrient needs (kg N-P-K per hectare), 2) Check fertilizer nutrient content (e.g., DAP is 18-46-0), 3) Divide required nutrient by fertilizer percentage × 100. Example: For 60 kg P₂O₅/ha using DAP (46% P₂O₅): 60÷46×100 = 130 kg DAP/ha.
When should I apply fertilizer for maize in Kenya?
Maize fertilizer timing: 1) Basal (at planting): Apply DAP or NPK in furrows 5-7 cm from seeds, 2) First topdress (knee height, 4-6 weeks): Apply half of CAN, 3) Second topdress (tasseling, optional): Apply remaining CAN. Apply when soil is moist for better uptake. Avoid contact with seeds.
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Disclaimer: Fertilizer recommendations are general guidelines based on Kenya agricultural research. Actual requirements vary by soil type, previous cropping, rainfall, and specific location. Soil testing is recommended for precise nutrient recommendations. Prices are estimates and vary by region and season. Consult local agricultural extension officers for specific advice.