Braintree-based Trials Equipment had a Sampo plot harvester equipped with Zuidberg rubber tracks on display on its stand.  Paired together specifically for Suffolk trials harvesting contractor Envirofield, the tracks have been bolted on — not for extra traction or limiting compaction, but for stability instead.  That’s because nearly all trials plots are harvested at 90° to the tramlines, so the relatively small wheels of a plot combine drop into the ruts, causing issues for the header and also the threshing gear inside the machine. There’s no room for sieve levelling on these diminutive harvesters so it’s all about keeping them on the level.  With a £23,000 price tag, the tracks will be evaluated this season with a view to them becoming more widely available next year.