Building an understanding of normalised difference vegetation index (NDVI), through the comparison of nitrogen products, nitrogen application timing and rate in wheat and barley

The specific aims of this trial were to:• understand if the crop responded differently to urea compared with Easy N (liquid nitrogen)• define the sensitivity with which the NDVI method can detect differences in timing and rate of nitrogen application• determine if wheat and barley respond comparatively to nitrogen type (product), timing and rate, as measured by NDVI• quantify how the use of different nitrogen types, timing and rates influence grain yield and quality.