- There was no variation in grain quality between the headland and the middle of the paddock or within parts of a paddock.
- Growers could visually identify bad parts of a paddock and grain quality differed between the good and bad parts of the paddock. Harvesting and handling these separately may optimise grain value from the whole paddock.
- Variation in grain quality occurs between paddocks.
- It is unlikely (except for bad parts of a paddock) that differences in grain quality between truckloads from the same paddock will be measurable at grain receival.