A rice mill's margin is decided lot by lot. Most mills only know their outturn for the season. Here is how to know it for every lot.
Ask a rice miller about outturn and you will get a confident answer for the season. Ask about the lot that came from one broker last Tuesday and the answer becomes a guess.
That gap matters. Paddy from different villages, brokers and varieties mills differently. Moisture at the gate, the time it sat in the godown and how it was dried all change how much head rice comes out. If you only know the season's average, you keep buying from the supplier whose paddy quietly costs you money.
Why lot-wise outturn is hard
During the season, the mill is at full stretch. Paddy arrives all day, slips are written by hand, moisture is checked and argued at the gate, and the operator's only job is to keep the line running. Nobody has time to write down which lot went into which batch, and what came out of it in head rice, brokens, bran and husk.
So the books carry purchase on one side and sales on the other, and outturn is whatever is left when you divide one by the other.
What knowing it per lot changes
When outturn is recorded for every lot, three decisions get better:
- Buying. You see which brokers and villages give you better rice per quintal, and you pay for that, not just for weight.
- Moisture deductions. When a deduction is worked out the same way every time, from a written rule, the arguments at the gate become shorter and fairer.
- Custom milling. If you mill for a government agency, you know early whether your outturn will meet what you must deliver, instead of finding out near the deadline.
How to start without software
Give every lot a number at the gate. Write it on the slip and on the stack. When a batch is milled, the operator writes the lot number and four weights: head rice, brokens, bran and husk. That is all. After two weeks you will already see patterns you did not expect.
Where AI helps
The difficulty is that this adds writing at the busiest point of the year. AI removes most of it:
- Purchase and weighbridge slips are read from a phone photo, so every lot is recorded with its farmer or broker, weight and moisture without typing.
- The moisture deduction is worked out by your own rule, the same way for every truck.
- The operator speaks the batch output in Hindi, and it is entered against the lot.
- An agent flags a lot milling below its normal outturn the same day, while you can still ask why.
- For custom milling, it keeps paddy received, rice delivered and the balance for each agency, and warns you before each delivery date.
The miller still decides whom to buy from and how to mill. The difference is that the decision rests on every lot, not on the season's average.
Where to start
Start with lot numbers at the gate this week. When you are ready to stop writing them by hand, we have set out what this looks like for rice mills, from paddy to payment.