Variety choice and knowing its weaknesses is the starting point to keeping winter wheat crops clean of disease and was behind Tim Lamy-man's success in breaking the world wheat yield record with a crop of nearly 18t/ha last summer.The Lincolnshire Wolds grower chose a wheat variety with strong septoria resistance, especially after a tough disease control year in 2021, and good yellow rust resistance, but his favoured variety Champion - which he sees as one of the best varieties grown on his farm - had only moderate resistance to brown rust."Champion has a slight weakness to brown rust which can come in late in the season encouraged by the sea mists we see on the farm," he tells Farmers Weekly.
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