In which two subregions of Chile is Merlot primarily planted?

The focus on the Maipo and Rapel subregions as key areas for Merlot planting in Chile is rooted in the climate and geographical features that are ideal for this variety. The Maipo Valley, situated near Santiago, is known for its warm Mediterranean climate, which is conducive to growing full-bodied red wines like Merlot. The region has a long history of fine wine production and is recognized for its well-established vineyards.

Rapel, which is adjacent to Maipo, also exhibits similar climatic conditions and benefits from a variety of microclimates that allow for diverse expressions of grapes, including Merlot. Both subregions take advantage of the relevant elevations, sunlight, and cooling influences from nearby bodies of water, which together contribute to the ripening characteristics of Merlot grapes, resulting in wines that can show ripe fruit flavors and balanced acidity.

The other regions mentioned, while they may grow a variety of grapes, are not as prominent for Merlot compared to Maipo and Rapel. Therefore, the recognition of these two subregions specifically highlights their prominence in the cultivation of Merlot in Chile.