Organic Nutrient Blend & N, P, K from Your Mix
Blends FYM
Blending farmyard manure, vermicompost and neem cake supplies N, P and K plus organic matter — each has a different content, so enter your quantities to total the nutrients supplied.
Build your organic blend
Next: spread the 1,600 kg blend and credit roughly 17.5/7/12.5 kg of N-P-K against your crop's requirement before topping up with any mineral fertiliser.
Nutrient content of organics varies widely with source and maturity; these are typical preset percentages (FYM 0.5-0.2-0.5, vermicompost 1.5-0.8-1.2, neem cake 5-1-1.5). Much of the N mineralises slowly over the season.
Organic nutrient blend — key facts
- Total NPK
- Σ (quantity × nutrient %)
- FYM
- ≈ 0.5% N, slow & bulky
- Vermicompost
- ≈ 1.5–2% N, microbe-rich
- Neem cake
- ≈ 4–5% N, slow-release
- Bonus
- organic matter + soil structure
- First-season N
- ≈ a third to a half available
- Use with
- a reduced mineral dose if needed
- Privacy
- Runs in your browser; nothing uploaded
Build the soil while you feed the crop
No single organic input does it all: farmyard manure brings bulk organic matter but dilute nutrients, vermicompost adds a richer, microbe-laden feed, and neem cake delivers concentrated, slow-release nitrogen with pest-deterrent properties. Blending them balances the N, P and K while building soil structure, water-holding and biology — the foundation of lasting fertility rather than a one-season fix.
This tool totals the nitrogen, phosphorus, potassium and combined weight from your quantities and each source's nutrient content, so you can balance the mix, compare it against the crop's requirement, and see the organic share you're supplying. Pair it with the Compost Recipe, FYM Fertilizer Equivalent and Vermicompost Production tools for a full organic plan.
Balance the blend
Mix sources to hit your N, P, K target.
Know the real NPK
Total the nutrients across all inputs.
Build soil health
Add organic matter and feed soil life.
Trim mineral inputs
See the organic share to cut the rest.
Frequently Asked Questions
What does an organic nutrient blend do?+
Blending farmyard manure (FYM), vermicompost and neem cake supplies nitrogen, phosphorus and potassium together with organic matter that feeds soil life and improves structure. Because each source has a different nutrient content, mixing them lets you build a balanced organic feed and total the N, P and K your soil actually receives.
How is the blend's NPK calculated?+
Each input's quantity is multiplied by its N, P and K percentages, then summed across the three sources to give total nitrogen, phosphorus and potassium plus the combined weight. For example a few tonnes of FYM, some vermicompost and a sack of neem cake each contribute their share, and the tool adds them into a single N–P–K total.
What is the nutrient content of FYM?+
Well-rotted farmyard manure is relatively dilute — typically around 0.5% N, 0.2% P and 0.5% K on a fresh-weight basis, though it varies widely with animal, bedding, age and storage. Its real value is bulk organic matter that improves soil structure and water-holding alongside a steady, slow release of nutrients.
How does vermicompost compare?+
Vermicompost — manure and residues digested by earthworms — is more concentrated and finely structured than raw FYM, often around 1.5–2% N with useful P and K plus beneficial microbes and growth-promoting compounds. It releases nutrients steadily and is excellent for nurseries, vegetables and as a soil conditioner.
Why add neem cake?+
Neem cake, the residue after oil extraction from neem seed, is a richer nitrogen source (around 4–5% N with P and K) and acts as a slow-release organic fertilizer. It also has nematicidal and pest-repellent properties and can slow nitrification, helping nitrogen stay available longer in the soil.
Can an organic blend fully replace chemical fertilizer?+
It can over time, but organic nutrients release slowly and are dilute, so you need much larger quantities and patience as soil biology builds. Many growers blend organics with a reduced mineral dose to meet a crop's peak demand while improving soil health. This tool shows the organic share you're supplying.
How much of the nitrogen is available the first season?+
Not all of it — organic nitrogen mineralises gradually, so roughly a third to a half may become plant-available in the first season, with the rest released over following years as residues break down. That carry-over is a benefit, but it means a single organic application acts more slowly than a soluble fertilizer.
Does the blend add more than N, P and K?+
Yes — and that's much of the point. Organic blends add organic matter, secondary nutrients and micronutrients, plus they feed soil microbes, improve structure, aeration and water-holding, and reduce crusting. The N, P and K total is the headline figure, but the soil-building effect is a lasting bonus.
Are the figures precise?+
They're solid planning estimates based on the nutrient percentages you enter. Real organic materials vary enormously with source, moisture, age and processing, so test a representative sample where it matters. Use the result to balance the blend and compare against your crop's requirement rather than as an exact dose.