Ordinary fertilizer
UREA 46-0-0
Straight nitrogen at 46% — the most concentrated nitrogen source sold. A manufactured fertilizer, not a compost.
- 1kg¥380¥380/kg
- 3kg¥980¥327/kg
- 20kg¥4,480¥224/kg
Coming soon on Amazon and Rakuten.
Price includes tax. Delivery is charged separately, by destination and bag size.
- Classification
- Ordinary fertilizer
- Sizes
- 1kg・3kg・20kg
Verify Your Batch
Every bag carries a lot number. Type it in and you can see where it was made, what the laboratory measured in it, and when it left our yard.
- Made in Yokoshibahikari, ChibaFermented and bagged at our own yard since 2001.
- Every lot laboratory-testedNitrogen, phosphorus and potash measured before it ships.
- Trace any bag by its lot numberThe QR code on the bag opens that lot's own record.
- Shipped from our own yardPacked and dispatched by the people who made it.
The record
What is in it
- Classification
- Ordinary fertilizer
- Raw materials
- Urea, 46% total nitrogen
- Made at
- Sanwa plant, Yokoshibahikari, Chiba
- Sizes
- 1kg — ¥380 · 3kg — ¥980 · 20kg — ¥4,480
What it's for
Pushing leaf growth where nitrogen alone is short: turf, rice, leafy crops, and correcting a pale stand mid-season.
When to apply
In the growing season, split into small applications rather than one large one.
Handling and storage
Keep absolutely dry — urea draws water from the air and cakes. Do not apply to wet leaves or in strong sun, and water in after spreading.
About Sanwa products
Why growers choose it
- 01
Among the cheapest nitrogen per kilogram you can buy — 20kg carries 9.2kg of actual N.
- 02
Acts within days, where a compost takes a season.
- 03
Sold in 1kg for a garden as well as 20kg for a field.
How to use Sanwa Fertilizer
Using it is three steps
Simple application. Consistent results.
01A little at a time
Split the season's nitrogen into several small applications rather than one large one.
02Keep it off the leaves
Do not apply to wet foliage or in strong sun — both scorch the crop.
03Water it in
Urea works once dissolved. Always water after spreading.
Before you order
Questions growers ask
How does it compare with ammonium sulfate?
Urea is 46% nitrogen against roughly 21% for 硫安, so the same nitrogen takes less than half the weight. It carries no sulfur.
Can I dissolve it and spray it on the leaves?
Some growers do, but too strong a solution scorches. Concentration and frequency vary a lot by crop — follow the bag and your prefecture's 施肥基準.
Should I spread it before rain?
Light rain washes it in; heavy rain washes it away. Water it in yourself, or watch the forecast.
Can I use this in organic growing?
No. Urea is a manufactured fertilizer and is not permitted in JAS-certified organic production. Use one of the composts instead.
It has gone solid in the bag. Is it ruined?
No — caked urea is chemically unchanged. Break it up before spreading, and keep the next bag dry and closed.
Can I use it alongside a compost?
Many growers do: the compost builds the soil, and the urea tops up nitrogen alone as the crop grows.
How much should I apply?
It depends on the crop and the soil. Follow the bag, your soil test and your prefecture's 施肥基準 — and ask us if you are unsure.
