🌾 Nano DAP
Topic: Difference between 50 kg DAP and Nano DAP (1.20 ml)
Overview
DAP (Di-Ammonium Phosphate) is one of the most widely used fertilizers in Indian agriculture. It contains high amounts of Nitrogen (N) and Phosphorus (P) and is applied to soil as a base fertilizer. Nano DAP, on the other hand, is a modern nano-based liquid fertilizer developed by IFFCO. It provides nutrients in nano form, which plants can absorb quickly and efficiently through leaves or roots. However, Nano DAP cannot fully replace the solid 50 kg DAP bag — it serves as a supplement or enhancer.
Chemical Composition
-
50 kg DAP (solid granules):
Standard composition = 18:46:0- Nitrogen (N): 18%
- Phosphorus (P₂O₅): 46%
- Potassium (K): 0%
Therefore, in a 50 kg DAP bag:
- N = 50 × 0.18 = 9 kg
- P₂O₅ = 50 × 0.46 = 23 kg
-
Nano DAP (liquid):
Label composition = 8:16:0 (as seen on the IFFCO bottle)
That means:- N = 8%
- P₂O₅ = 16%
- K = 0%
So, if 1.20 ml (≈1.20 g) of Nano DAP is used, it contains:
- N = 1.20 × 0.08 = 0.096 g
- P₂O₅ = 1.20 × 0.16 = 0.192 g
Clearly, this is a very small quantity compared to what 50 kg of granular DAP provides.
Nutrient Equivalence Calculation
Let’s find how much Nano DAP would be needed to match 50 kg of normal DAP.
- From solid DAP: 50 kg provides 23,000 g of P₂O₅.
- Each gram of Nano DAP (8:16:0) provides 0.16 g of P₂O₅.
- Therefore, Nano DAP required = 23,000 ÷ 0.16 = 143,750 g = 143.75 liters.
That means to match one 50 kg bag of solid DAP, you would need roughly 144 liters of Nano DAP liquid (if used purely for nutrient equivalence). This clearly shows that Nano DAP is not meant to replace DAP in bulk, but only to enhance fertilizer efficiency and reduce wastage.
Functional Difference
| Aspect | 50 kg DAP | Nano DAP (1.20 ml or foliar) |
|---|---|---|
| Form | Solid Granular | Liquid Nano-sized |
| Composition | 18:46:0 | 8:16:0 |
| Application | Soil (Basal) | Foliar Spray / Seed Treatment |
| Nutrient Release | Slow and long-term | Quick and short-term |
| Efficiency | 30–40% absorbed | 80–90% absorbed |
| Cost | Higher upfront | Lower per application |
| Replacement | Full nutrient source | Supplement / Enhancer only |
Which is Better?
The answer depends on purpose:
- If you want long-term soil nutrition, especially for phosphorus and nitrogen needs — 50 kg DAP is essential.
- If you want quick absorption, leaf-level nutrient correction, or seed priming, then Nano DAP is better.
- Both together can give excellent results — solid DAP at sowing time, Nano DAP as foliar spray later for faster growth and greener leaves.
Economic Comparison
- Traditional DAP is used in large quantities (hundreds of kg per acre).
- Nano DAP, being a concentrated liquid, is applied in very small doses (usually 2–4 ml per liter of water, sprayed on leaves).
- When used wisely, Nano DAP reduces the number of fertilizer bags required and can save up to 50% of fertilizer costs while maintaining or improving yield.
Conclusion
In short:
- 50 kg DAP gives bulk nutrition to the soil.
- Nano DAP provides instant nutrition to the plant.
- Nano DAP cannot completely replace normal DAP, but it can enhance nutrient uptake, reduce costs, and improve fertilizer efficiency.
If your goal is to maintain soil fertility and ensure steady crop growth, use both together solid DAP during sowing and Nano DAP as a spray during vegetative growth.
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