Nano Urea & Bottles to Replace Urea
Replaces urea bags
Enter your conventional urea bags, the promoted replacement millilitres and bottle size to get the nano urea bottlesyou need, the total spray volume and the urea you replace — cutting cost and nitrogen loss.
Enter your urea plan
Next: use 4 bottles (~2,000 ml) as a foliar spray at 2–4 ml/L at active growth & before flowering, in place of 180 kg urea.
Replacement is the manufacturer's claim; for best results use as a foliar top-up alongside a reduced basal urea dose, not a full replacement on poor soils.
Nano urea — key facts
- Bottles
- bags × replacement ml ÷ bottle size
- Replaces
- ≈ 1 bag urea per bottle
- Bottle size
- ≈ 500 ml
- Mix rate
- ≈ 2–4 ml per litre water
- Best stage
- active growth & pre-flowering
- Use as
- foliar top-up, reduced basal urea
- Cuts
- cost & nitrogen loss
- Privacy
- Runs in your browser; nothing uploaded
A bottle on the leaf instead of a bag on the soil
Most of the nitrogen in a bag of soil-applied urea never reaches the crop — it leaches, runs off or escapes to the air. Nano urea takes a different route: a small bottle of nanoscale urea is sprayed straight onto the leaves, where the fine particles are absorbed quickly. Promoted to replace roughly one bag of urea for top-dressing, it is lighter to carry, cheaper per dose, and aims to put more of the nitrogen into the plant and less into losses.
This tool turns your urea plan into a nano urea plan — the bottles needed, the total spray volume, the urea replaced and the spray tanks — from the bags, replacement millilitres and bottle size you enter. Treat it as a foliar top-up at active growth and pre-flowering alongside a reduced basal urea dose. Pair it with the Neem-Coated Urea Saving, Fertilizer (NPK) and Nutrient Use Efficiency tools for a full nitrogen plan.
Convert bags to bottles
Turn your urea plan into nano urea instantly.
Cut cost & weight
A bottle beats hauling bags of urea.
Reduce nitrogen loss
Foliar nitrogen leaks far less than soil urea.
Plan the spray
Total volume and tanks for the whole job.
Frequently Asked Questions
What is nano urea?+
Nano urea is a foliar liquid nitrogen fertiliser made of nanoscale urea particles. A small bottle — typically around 500 ml — is promoted to replace roughly one 45 kg bag of conventional urea used for top-dressing. Sprayed onto the leaves, the fine particles are absorbed directly by the crop, aiming to cut the cost and the nitrogen lost to the soil and air.
How many nano urea bottles do I need?+
Bottles = conventional urea bags × replacement millilitres per bag ÷ bottle size. For example, if you would have used 4 bags of urea for top-dressing and one bottle (500 ml) is promoted to replace one bag, you need 4 × 500 ÷ 500 = 4 bottles. Enter your own bags, replacement ml and bottle size and the tool does the maths instantly.
Does nano urea fully replace conventional urea?+
No — it is best treated as a foliar top-up, not a total substitute. The standard recommendation is to keep a reduced basal urea (or other nitrogen) dose at sowing and use nano urea to replace the top-dressing splits. Relying on foliar nitrogen alone usually under-feeds the crop, especially heavy feeders like cereals.
When should I spray nano urea?+
Apply it as a foliar spray at active vegetative growth and again before flowering — the stages when the crop is building canopy and grain and can take up nitrogen fastest. Spray in the cool of early morning or late evening on dry foliage, avoiding the hottest part of the day and rain within a few hours.
How much spray volume and how many tanks?+
Nano urea is usually mixed at about 2–4 ml per litre of water. The tool converts your total bottle volume into the total spray solution and the number of knapsack or power-sprayer tanks that means, so you know how much water to carry and how many fills the job will take.
How does nano urea cut cost and nitrogen loss?+
A bottle is cheaper and far lighter to carry than a bag of urea, and because the nitrogen goes onto the leaf rather than the soil, less is lost to leaching, runoff and volatilisation. Pairing a reduced basal dose with a nano urea foliar top-up can trim the total urea bill while keeping the crop fed.
Can I tank-mix nano urea with other sprays?+
It is generally compatible with many common agrochemicals and micronutrient sprays, but always do a small jar compatibility test first and follow the label. Avoid mixing with strongly alkaline products. A non-ionic surfactant or the spread already in the product helps the droplets stick and spread on the leaf.
Is it suitable for any crop or area unit?+
Yes — the calculation is just a conversion, so it works for cereals, vegetables, pulses or cash crops. Decide your conventional urea plan first (bags for the area in acres, hectares, bigha or guntha), then this tool tells you the equivalent nano urea bottles and spray volume.
Are the figures exact?+
They are solid planning figures based on the replacement rate you enter. Real nitrogen response depends on crop, stage, soil fertility, spray coverage and weather, and the official replacement claim varies by product and region. Use a reduced basal dose, watch the crop, and adjust — this is for planning, not a guarantee of yield.
How is nano urea different from neem-coated urea?+
Neem-coated urea is still soil-applied granular urea, slowed by a neem coating to reduce losses; nano urea is a foliar liquid sprayed on leaves. They tackle nitrogen-use efficiency differently — see the Neem-Coated Urea Saving calculator to compare the savings from each approach.