Comment by 9rx

> And I was referring to end rows, not the entire field.

As was I. 10% loss is considered typical, but that amortizes to only ~4% and ~2% for two and five acre fields respectively. So you suggest that 2% is "terrible" and "pretty significant", but I say it is essentially imperceptible from normal field variability. If you pick a random five acre plot out in the middle of a 100 acre field, there is a decent chance that it will 2% or more below the field average too.