Results summary: Close to harvest, NDVI was higher in the Utrisha N treated tramline and stems were visibly greener, but this was not followed by any measurable yield benefit. It is possible that Utrisha N could have contributed to a longer grain filling period and higher yield, had harvest been delayed to accommodate this. The potential for Utrisha N to improve yield may also have been limited by the early harvest caused by hot, dry weather in July 2022, and by the lower than usual N optima seen in 2022; given that Utrisha N is supposed to supply additional N to plants via N fixation, we would only expect a significant yield benefit in situations where yield is limited by N supply.
As part of the AICC Crop Nutrition Club 2022, this on-farm winter oats trial tested the effects of applying Utrisha N. The trial was facilitated by a local AICC advisor, with support and Agronomics yield map analysis from ADAS.
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