Spearhead 450/460 rotary mower toppers: Wide-area toppers remain popular for keeping set-aside in check, with a growing number of arable users also employing these tools to mulch up long straw and maize stubble ahead of min-till operations. Livestock farmers have taken to wider models too, all of which has helped to boost demand for the original Spearhead 450 and current 460. James de Havilland reports