The concept of merging swaths of grass using belts has been around for years. This method is most commonly used on trailed and butterfly mower units grouping swaths of grass. However, until now, the go-to tool to group grass after mowing has been the rake.

Larger trailed mergers have been on the market for some time, mainly used to carefully lift and move delicate Lucerne crops such as alfalfa. There was never a demand for mergers in the grouping of grass until recent times. Narrower working widths and higher buying costs over rakes are the main reasons why mergers never took off in Ireland for grass. Having said that, smaller front-mounted 3m mergers have become more common in recent years for the turning of straw given their delicate handling abilities.