Wheat yield estimates using multi-temporal NDVI satellite imagery

We examined seasonal growth profiles developed from AVHRR-NDVI for estimating wheat yield at regional and farm scales in Montana for the years 1989-1997. Both regions and farms showed strong relationships between wheat yields and integrated NDVI over the entire growing season, and with late-season NDVI parameters. The use of AVHRR-NDVI growth profiles at the regional level provided the strongest yield estimates. At the farm scale, the spatial resolution (1 km(2)) limited the certainty for accurate portrayal of field locations. However, our models provide a basis for further examination of time-series satellite data.