Counting bags when the bin was shared between two fields
Shared bins are ordinary. Two fields, one dryer, one heap, and a winter question: what did each plot actually do? Anyone who offers you exact plot tonnes from that heap is selling a comfort. Reconstruction can still be useful if it stays honest about the gaps.
What we can sometimes recover: the order of fields, the number of wagons each afternoon, a driver’s memory of which plot ran first, and any tickets that escaped the mix. What we cannot recover: a clean split when both plots ran into the same pit for three days with no marks.
Tamar’s rule is to write a range, not a fake single number. “River field likely 4.8 to 5.4 tonnes per hectare if the driver’s order is right” is usable in a rent talk. “5.12” from a shared bin is theatre.
Next harvest, the cheaper fix is a chalk mark on the wagon side and a plot name on the ticket. The local tracking utility can hold those names later. It cannot invent them if nobody wrote them down.