The post of president, currently held by Nigel Miller, is open for election every two years, but Mr Miller will be returned unopposed as the only nominee for the position.
The two vice-presidential posts are both for one-year terms. The current vice president Allan Bowie has been nominated, having been a vice president since February 2009.
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The other vice presidential nominee is the union's livestock committee chairman, Rob Livesey, who is poised to replace John Picken, who stands down after two years in the role.
Although there will be no voting, the formalities of having candidates proposed, seconded and elected will take place at the union's council meeting on Tuesday February 12, 2013 at the Fairmont Hotel, St Andrews, following the union's agm and centenary dinner the previous day.
A round of regional agms is scheduled for January 2013 and, with the agreement of regional boards, it is intended that the presidential and vice presidential candidates will attend these events.