Before Adas crop physiology consultant Dr Thomas Wilkinson addressed the question of where yield is won or lost, he posed the question to Agronomy Exchange delegates of whether maximising yield is still relevant. With low grain prices and high input costs, it is a question many growers have probably asked themselves several times. Fortunately, with a data set of 3,000 entries generated over the past 14 years – and 1,000 covering winter wheat – the Yield Enhancement Network (YEN) is an extensive resource to base decisions on. And the evidence is clear. “There is a strong relationship between yield and…