The 2015 champion was Andy Jones who shot 141 – five under par – to win by a shot from club-mate Phil Tomkinson, who went on to take the overall series title.
This year the Wharfe Trophy will be played on Sunday, August 14.
It is the fifth year the club has run the competition, which was won on its inaugural staging in 2012 by Wetherby member Matthew Pearson, who was a narrow victor over Nigel Sweet.
The tables were turned the following year when Sweet emerged victorious.
Pearson then tied for first prize with Andrew Oates, of Worksop, in 2014 when torrential rain caused the event to be reduced to 18 holes.
The Leeds and District Seniors Championship was played at Wetherby in June and the players were all impressed with the presentation of the course.
Entry forms for the Wharfe Trophy can be obtained from the Order of Merit website or from the club’s site – www.wetherbygolfclub.co.uk.
The total prize fund this year is £1,700 with a first prize of £500. There will be a special prize for the best 36-hole score by a junior, for which players have to have been under 18 on January 1, 2016.
The completion of the redevelopment of the Wetherby course is continuing and preliminary work to alter the 17th and 18th holes is due to start in the autumn.